Category Archives: Product Catalog

China Hot selling German Type Screw Band Worm Drive Hose Clamps with high quality

Product Description

German Type Screw Band Worm Drive Hose Clamps

Product description:
   1. Be widely in hoses bundling ;
   2. Worm drive mechanism;

Type	Specification	Width Approx	Thickness	Material Quality

GH008	8-12	9.0/12.0	0.7mm	W1/W2/W4
GH571	10-16	9.0/12.0	0.7mm	W1/W2/W4
GH012	12-20	9.0/12.0	0.7mm	W1/W2/W4
GH016	16-25	9.0/12.0	0.7mm	W1/W2/W4
GH571	20-32	9.0/12.0	0.7mm	W1/W2/W4
GH571	25-40	9.0/12.0	0.7mm	W1/W2/W4
GH032	32-50	9.0/12.0	0.7mm	W1/W2/W4
GH040	40-60	9.0/12.0	0.7mm	W1/W2/W4
GH050	50-70	9.0/12.0	0.7mm	W1/W2/W4
GH060	60-80	9.0/12.0	0.7mm	W1/W2/W4
GH070	70-90	9.0/12.0	0.7mm	W1/W2/W4
GH080	80-100	9.0/12.0	0.7mm	W1/W2/W4
GH090	90-110	9.0/12.0	0.7mm	W1/W2/W4
GH100	100-120	9.0/12.0	0.7mm	W1/W2/W4
GH110	110-130	9.0/12.0	0.7mm	W1/W2/W4
GH120	120-140	9.0/12.0	0.7mm	W1/W2/W4
GH130	130-150	9.0/12.0	0.7mm	W1/W2/W4
GH140	140-160	9.0/12.0	0.7mm	W1/W2/W4
GH150	150-170	9.0/12.0	0.7mm	W1/W2/W4
GH160	160-180	9.0/12.0	0.7mm	W1/W2/W4

Packaging&Delivery:
1. Common packing: 100Pcs+ Polybag+Label+Export Carton
2. Customized packing: Header card packing, Blister with card packing, Double Blister packing, Canister packing, other packing can be supplied according to customers requirement.

Service:
Excellent service and first-class after-sale service
•Provide professional sales person to communicate with you before the order.
•Provide optimum system solution based on each client’s export.
•Provide strict check for each part and each process before export.
•Provide post-sale service, including installation, technical CZPT and training.

Company Information:
HangZhou Yingfa Cable Accessories Co., Ltd, is a hi-tech enterprise. Our company has automatic spray lines and automatic plastic packaging lines. Company mainly produces Stainless steel cable ties, Stainless steel epoxy coated cable ties, Stainless steel PVC coated cable tie, Stainless steel banding strap, Nylon cable ties, Nylon sleeve, Marker ties, Water-proof cable glands, Slotted wiring ducts, Cable clips, Marine tubes, Terminal blocks, Insulating tape, Cable wiring, Cold terminals, Pre-insulaton terminals, Copper-aluminum terminals. Company’s products are widely used in shipbuilding, port machinery, automobile, aviation, electric power, communications, electronics, nuclear power, High-speed Rail locomotive and other industries, and by users of the industry acclaim.

Compete Advantage:
1. We are the factory,and the price are competitive.
2. High quality, and the product have passed UL, SGS, CE, ROHS,CCS…etc. They have been exported to many countries and enjoy good popularity.
3. Quick delivery. We have automatic production line, therefore the production is much quicker. Keep smooth delivery on time.
4. Perfect package according to your demand.
5. We have professional design/ technology team, so that we can produce new products according to your demand.

Trade term of product:
1. Payment:L/C, T/T, D/A, D/P, Western Union, Paypal…etc.
2. Supply ability: 20ft Container/Month
3. OEM: accept
4. Delivery:  •By Courier: 1-2 Working days by special offer
                    •By Air: 4-7 Working days at appointed airport
                    •By Sea:20-25 Working days at appointed port

If you are interested in our products, please contact us. Thank you.

Contact person: CZPT Xiao

Website:yingfacable

What Are Screw Shaft Threads?

A screw shaft is a threaded part used to fasten other components. The threads on a screw shaft are often described by their Coefficient of Friction, which describes how much friction is present between the mating surfaces. This article discusses these characteristics as well as the Material and Helix angle. You’ll have a better understanding of your screw shaft’s threads after reading this article. Here are some examples. Once you understand these details, you’ll be able to select the best screw nut for your needs.
screwshaft

Coefficient of friction between the mating surfaces of a nut and a screw shaft

There are 2 types of friction coefficients. Dynamic friction and static friction. The latter refers to the amount of friction a nut has to resist an opposing motion. In addition to the material strength, a higher coefficient of friction can cause stick-slip. This can lead to intermittent running behavior and loud squeaking. Stick-slip may lead to a malfunctioning plain bearing. Rough shafts can be used to improve this condition.
The 2 types of friction coefficients are related to the applied force. When applying force, the applied force must equal the nut’s pitch diameter. When the screw shaft is tightened, the force may be removed. In the case of a loosening clamp, the applied force is smaller than the bolt’s pitch diameter. Therefore, the higher the property class of the bolt, the lower the coefficient of friction.
In most cases, the screwface coefficient of friction is lower than the nut face. This is because of zinc plating on the joint surface. Moreover, power screws are commonly used in the aerospace industry. Whether or not they are power screws, they are typically made of carbon steel, alloy steel, or stainless steel. They are often used in conjunction with bronze or plastic nuts, which are preferred in higher-duty applications. These screws often require no holding brakes and are extremely easy to use in many applications.
The coefficient of friction between the mating surfaces of t-screws is highly dependent on the material of the screw and the nut. For example, screws with internal lubricated plastic nuts use bearing-grade bronze nuts. These nuts are usually used on carbon steel screws, but can be used with stainless steel screws. In addition to this, they are easy to clean.

Helix angle

In most applications, the helix angle of a screw shaft is an important factor for torque calculation. There are 2 types of helix angle: right and left hand. The right hand screw is usually smaller than the left hand one. The left hand screw is larger than the right hand screw. However, there are some exceptions to the rule. A left hand screw may have a greater helix angle than a right hand screw.
A screw’s helix angle is the angle formed by the helix and the axial line. Although the helix angle is not usually changed, it can have a significant effect on the processing of the screw and the amount of material conveyed. These changes are more common in 2 stage and special mixing screws, and metering screws. These measurements are crucial for determining the helix angle. In most cases, the lead angle is the correct angle when the screw shaft has the right helix angle.
High helix screws have large leads, sometimes up to 6 times the screw diameter. These screws reduce the screw diameter, mass, and inertia, allowing for higher speed and precision. High helix screws are also low-rotation, so they minimize vibrations and audible noises. But the right helix angle is important in any application. You must carefully choose the right type of screw for the job at hand.
If you choose a screw gear that has a helix angle other than parallel, you should select a thrust bearing with a correspondingly large center distance. In the case of a screw gear, a 45-degree helix angle is most common. A helix angle greater than zero degrees is also acceptable. Mixing up helix angles is beneficial because it allows for a variety of center distances and unique applications.
screwshaft

Thread angle

The thread angle of a screw shaft is measured from the base of the head of the screw to the top of the screw’s thread. In America, the standard screw thread angle is 60 degrees. The standard thread angle was not widely adopted until the early twentieth century. A committee was established by the Franklin Institute in 1864 to study screw threads. The committee recommended the Sellers thread, which was modified into the United States Standard Thread. The standardized thread was adopted by the United States Navy in 1868 and was recommended for construction by the Master Car Builders’ Association in 1871.
Generally speaking, the major diameter of a screw’s threads is the outside diameter. The major diameter of a nut is not directly measured, but can be determined with go/no-go gauges. It is necessary to understand the major and minor diameters in relation to each other in order to determine a screw’s thread angle. Once this is known, the next step is to determine how much of a pitch is necessary to ensure a screw’s proper function.
Helix angle and thread angle are 2 different types of angles that affect screw efficiency. For a lead screw, the helix angle is the angle between the helix of the thread and the line perpendicular to the axis of rotation. A lead screw has a greater helix angle than a helical one, but has higher frictional losses. A high-quality lead screw requires a higher torque to rotate. Thread angle and lead angle are complementary angles, but each screw has its own specific advantages.
Screw pitch and TPI have little to do with tolerances, craftsmanship, quality, or cost, but rather the size of a screw’s thread relative to its diameter. Compared to a standard screw, the fine and coarse threads are easier to tighten. The coarser thread is deeper, which results in lower torques. If a screw fails because of torsional shear, it is likely to be a result of a small minor diameter.

Material

Screws have a variety of different sizes, shapes, and materials. They are typically machined on CNC machines and lathes. Each type is used for different purposes. The size and material of a screw shaft are influenced by how it will be used. The following sections give an overview of the main types of screw shafts. Each 1 is designed to perform a specific function. If you have questions about a specific type, contact your local machine shop.
Lead screws are cheaper than ball screws and are used in light-duty, intermittent applications. Lead screws, however, have poor efficiency and are not recommended for continuous power transmission. But, they are effective in vertical applications and are more compact. Lead screws are typically used as a kinematic pair with a ball screw. Some types of lead screws also have self-locking properties. Because they have a low coefficient of friction, they have a compact design and very few parts.
Screws are made of a variety of metals and alloys. Steel is an economical and durable material, but there are also alloy steel and stainless steel types. Bronze nuts are the most common and are often used in higher-duty applications. Plastic nuts provide low-friction, which helps reduce the drive torques. Stainless steel screws are also used in high-performance applications, and may be made of titanium. The materials used to create screw shafts vary, but they all have their specific functions.
Screws are used in a wide range of applications, from industrial and consumer products to transportation equipment. They are used in many different industries, and the materials they’re made of can determine their life. The life of a screw depends on the load that it bears, the design of its internal structure, lubrication, and machining processes. When choosing screw assemblies, look for a screw made from the highest quality steels possible. Usually, the materials are very clean, so they’re a great choice for a screw. However, the presence of imperfections may cause a normal fatigue failure.
screwshaft

Self-locking features

Screws are known to be self-locking by nature. The mechanism for this feature is based on several factors, such as the pitch angle of the threads, material pairing, lubrication, and heating. This feature is only possible if the shaft is subjected to conditions that are not likely to cause the threads to loosen on their own. The self-locking ability of a screw depends on several factors, including the pitch angle of the thread flank and the coefficient of sliding friction between the 2 materials.
One of the most common uses of screws is in a screw top container lid, corkscrew, threaded pipe joint, vise, C-clamp, and screw jack. Other applications of screw shafts include transferring power, but these are often intermittent and low-power operations. Screws are also used to move material in Archimedes’ screw, auger earth drill, screw conveyor, and micrometer.
A common self-locking feature for a screw is the presence of a lead screw. A screw with a low PV value is safe to operate, but a screw with high PV will need a lower rotation speed. Another example is a self-locking screw that does not require lubrication. The PV value is also dependent on the material of the screw’s construction, as well as its lubrication conditions. Finally, a screw’s end fixity – the way the screw is supported – affects the performance and efficiency of a screw.
Lead screws are less expensive and easier to manufacture. They are a good choice for light-weight and intermittent applications. These screws also have self-locking capabilities. They can be self-tightened and require less torque for driving than other types. The advantage of lead screws is their small size and minimal number of parts. They are highly efficient in vertical and intermittent applications. They are not as accurate as lead screws and often have backlash, which is caused by insufficient threads.

China Hot selling German Type Screw Band Worm Drive Hose Clamps with high quality

China Best Sales CZPT Wpdka Series 80 Worm Gearbox Speed Reducer (1.5kw) with Hot selling

Product Description

WPDKA speed reducer, worm gear box

Output Torque	1.8-2430N.M
Rated Power	0.75~1.5KW
Input Speed	1400rpm

Worm gear box
Place of Origin:ZHangZhoug, China (Mainland) Brand Name:EED

Gearing Arrangement:Worm Output Torque:1.8-2430N.M Rated Power:0.75~1.5KW

Input Speed:1400rpm Output Form:foot mounted, flange

Material:Alloy steel,Carbon steel, Stainless steel,cast ion ,Aluminum

Standard or Nonstandard:Customized Gear Heat treatment:Carburising, quenching, gear

Mount Position:Foot mounted, flange mounted Certification:CE, ROHS, ISO9000

Color:Customized Warranty:1 year Ratio:1/10.1/15,1/20,1/25,1/30,1/40,1/50,1/60

1. Widely used in turbines, shaft liners and axletrees, good resistance to wearing, with high precision in dimensions, lower noise, advanced centric running castings
2. Without vent and highly precision
3. The whole structure is compact and the weight is larger

1. Notice of installation

1.1 Thebase-plate must be plane and stoutness, and the base-plate must be screwed downand shockproof.
1.2 Theconnecting shaft of prime mover, reducer and operation device must be coaxialinstallation.
1.3 Thediameter tolerance zone of input and output shaft is H6, the holes of fittings(such as couplings, belt-pulley, sprocket wheel and so on) must properly matethe shaft, which prevents bearing from breakage because of over-loose mate.

1.4 Driverssuch as sprocket wheel and gear must be fitted close to bearings in order toreduce bending stress of hanging shaft. 1.5 Whiteassembling motor of WPD reducer, it is necessary that proper amount of butterapplies to the worm shaft input hole and keyway, avoiding assembling tootightly and rusting after using for a long time. 1.6 WhenOrdering or using all kinds of WPD type, if the motor weight is binger than thecommon, supporting set is required.

2. Notices of usage

2.1 Before using, please check carefully whether the reducer model, distance, ratio, input connecting method, output shaft structure, input and output shaftdirection and revolving direction accord with requirement.

2.2 According to the requirement of selecting lubricant oil in the productmanual, please fill proper category and brand lubricant. And then screw on thevent-plug; Unlock the small cone-plug of vent-plug. Only after doing these, reducer is already for starting up running. The proper brand and adequatelubricant oil is required, replacing oil in time conforming to the request ofproduct manual is also necessary, especially after using first 100 hours, it isrequired refilling new oil.

2.3 Whenabnormal circumstances occur, please stop and check reducer per solutions andreasons for faults of reducer (allowable highest oil temperature is 95, under this temperature limit, ifoil temperature no more goes up, please let reducer continue running)

Screw Shaft Types

If you’re looking for a screw shaft, but aren’t sure which type to buy, you’re in luck. In this article, we’ll talk about the different types, including Threaded shank, Round head, and Machined. Once you’ve read it, you’ll know which type to buy. Then, you can decide whether you want a ball screw nut or a threaded shank.

Machined screw shafts

Besides the standard stainless steel shaft, manufacturers also provide a variety of other materials, such as titanium, bronze, and brass. In addition to stainless steel, manufacturers also provide a variety of top-coating options, including zinc, brass, and chromium. Aluminum screws are not particularly durable and are easily affected by weather. Most screw shafts feature self-locking mechanisms. They are especially useful in C-clamps, vises, and screw-top container lids.
For applications where accuracy is vital, a ball screw shaft needs to be annealed. A heat treatment can be performed on the ball screw shaft to ensure that both ends are heated evenly. In this process, the shaft will be more durable, while maintaining its high-precision properties. These screw shafts are a key component in computer-controlled motion-control systems, wire bonding, and other industries that require high-precision and high-quality performance.
Depending on the material used, screw shafts can be made of stainless steel or titanium. High-precision CNC machines and lathes are typically used to manufacture screw shafts. Various shapes and sizes are available, each with a specific application. Whether you need a small or large screw, you can find 1 to fit your needs. And since each size requires a different material, your choice of material is important as well.
In general, the materials used for machining screw shafts are steel, stainless steel, titanium, brass, bronze, and aluminum. Metals that resist corrosion are also commonly used. Other materials for screw shafts are Teflon, nylon, and nylon. You can also find threaded screw shafts in materials such as porcelain, glass, and ceramic. If you want to use your screws in a unique material, consider purchasing a customized one.
screwshaft

Ball screw nuts

If you have a screw shaft, the last thing you want to worry about is the ball nut slipping off. To prevent this, you can place a temporary stop in the shaft’s grooves to ensure that the ball nut does not slide off. When you remove the stop, you can then install the ball screw nut. But, before you can install the ball screw nut, you have to make sure that you have a good grip on the shaft.
When selecting ball screw nuts, it’s important to consider how much preload you need to apply to avoid excessive backlash. Preloading eliminates this problem by making the ball nut compact. It also prevents backlash, which is lost motion caused by clearance between the ball and nut. Backlash disrupts repeatability and accuracy. This is where spacer preloading comes in. You can insert a spacer between the 2 ball nuts to transmit the force to the nut. However, you should keep in mind that this method reduces the load capacity of the ball screw.
The critical speed of a screw is the maximum rotating speed before it whips. This critical speed is influenced by several factors, including the diameter of the screw shaft, the number of support elements, and the material. By adjusting these factors, you can reduce the number of components used and the amount of time it takes to assemble the screw shaft. In addition, you can also reduce the number of components and avoid stacking tolerances. However, the critical speed of plastic nuts is limited due to sliding friction.
The ball screw nut has several characteristics that make it unique. Its most prominent feature is the presence of ball bearings. These balls help reduce friction between the screw nut and the shaft. Without ball bearings, the friction would be too high to function properly. Another important characteristic is the groove profile of the nut and ball. These 2 features ensure that the ball and the nut meet at 2 points. You’ll be amazed by the results of the work of these ball screw nuts.
screwshaft

Threaded shank

Wood screws are usually not fully threaded because the shank has an unthreaded portion at the top. This shoulder part forces the screw to compress 2 pieces of wood, which prevents the screw from overheating and compromising the materials strength. As the screw is threaded partially up, it is not as difficult to remove as a fully threaded screw. However, it is important to note that a wood screw will not hold as tightly as 1 with a fully threaded shank.
In addition to being universal, screw threads can be of different sizes. For example, a M8 screw has a thread pitch of 1.25 mm. To avoid confusion, screw thread pitches are commonly given with a multiplication sign. For example, M8x1 means that the screw is 8 mm in diameter but has a thread pitch of 1 mm per 360-degree rotation. Those who are not familiar with these dimensions may find it confusing.
The OD of the threaded portion of a bolt is generally smaller than the OD of the nut. If the shank is too deep for the nut to fit, the threads may bottom out. This is why it’s important to use a thread-cutting bit with a small thread diameter. You can use a micrometer or caliper to measure the thread diameter. This tool will also allow you to easily identify which screw size fits where and how well.
The metric system is the most widely used. Fasteners with DIN numbers are generally metric in size. This makes them very useful for industrial settings. You can find metric-sized screws anywhere, as long as you buy them from a reputable manufacturer. These fasteners also come with a dog point, which is used for safety wire. If the screw needs to be replaced, the shank can be drilled with a hole for a safety wire or for a dog-point.

Round head

A round head screw is the most common type used for machine screws. Other common types include truss head, flat head, and hexed head. Each has a different profile and are used for different purposes. A round head screw is typically wider than a flat or a hexed head, and has a slightly rounded surface. These screws are useful for projects involving sheet metal or sheet-metal parts. Round heads are usually slightly wider than a hex head screw, and they may also be used as a substitute for washers in certain applications. However, truss heads are not necessary for every project.
A wood screw has a smooth shank that protrudes above the surface of the material it is attaching. A metal screw has a threaded shaft that is fully threaded from head to point, and a fully threaded shaft provides more bite. Two common head styles are round head and pan head. If the task requires the screw to be flush or countersunk, the round head will be the best choice.
Another type is the Reed & Prince screw drive. These are similar to Phillips screws but have a 75-degree V shape. They are commonly used in marine hardware and are also known as BNAE NFL22-070. This type is also used for steel plate hangers. In addition to round head and pan head screws, there are a variety of other screw types. You can even get a head with a slotted head if you know where to look.
Screw diameters are specified according to the ISO 261 or ISO 262 standards. An M8 screw has a diameter of 8.25 mm. The M8 screw has a pitch of 1.25 mm, which is equivalent to 1 mm per 360 degrees. There are several other standard screw sizes and thread diameters available. You can find them all by consulting the relevant standards. But remember, the metric system is the most popular.
screwshaft

Self-locking mechanism

A self-locking mechanism for a screw shaft is a device that secures the screw to its supporting member in a failure position. The locking mechanism provides a positive connection between the screw shaft and the control surface during normal operation, and locks the screw to its supporting member when the screw fails. Previous attempts to solve this problem have typically used secondary nuts with free play on the screw, which were intentionally designed to jam when loaded. However, such a device can be unreliable, which is why the present invention offers a more robust and reliable locking mechanism.
The self-locking function of a screw depends on several factors, including its pitch angle and the coefficient of friction of the threads. The angle of friction must be less than the tangent of the material pairing to prevent untightening of the screw. Screws with self-locking mechanisms have an efficiency e lower than 50%, which is less than half. Self-locking screws also have the benefit of being less efficient than a standard screw.
Unlike a normal screw, a self-locking screw can be turned in either direction. The nut 22 rotates with the screw shaft, and the member 23 is translated in an axial direction. Regardless of the direction of the rotation of the screw, this axial translation will result in the opposite moment to that input moment. While screw self-locking mechanisms are typically less expensive, they are more reliable and durable.
Another important feature of self-locking screws is that they are not susceptible to independent loosening. The screw cannot rotate without a certain amount of torque. In addition, a self-locking screw shaft must have a small wedge with a smaller half-angle than the arctangent of the static friction. This means that the torque applied by the driver must be greater than the torque needed to overcome the friction.

China Best Sales CZPT Wpdka Series 80 Worm Gearbox Speed Reducer (1.5kw) with Hot selling

China manufacturer 134.2kHz Hdx Waste Bin Tag/ Worm Tag /Trash Can Label for Waste Management with Good quality

Product Description

Model Name	RFID Waste Bin Tag
Standard	EPCglobal C1 Gen2/ISO18000-6C or 14443A
Operating Frequency	860-960 MHz or 125khz/13.56mhz
IC Type	Alien Higgs3 or customize
Memory	EPC 96 bits, User 512 bits, TID 64 bits
EPC Memory Content	Unique, randomized number
Max Read Distance US	LF:10-30mm;HF:30mm-50mm;UHF:0.5M-8M (depend on the reader )
Applicable Surface Materials	Trash , non-metallic surface
Tag Form Factor	Abnormity tag
Tag Materials	ABS
Attachment Method	Acrylic adhesive, epoxies, silicone sealant, rivets, cable tie
Dimensions	Φ30*15mm
Operating Temperature	(-20° to + 85°C)

Rfid waste bin tag Key Features

1.Easily integrated – standard sizing for easy installation or retrofit
2.Tamper resistant – custom spanner screw drive to deter fraudulent removal
3.Broad compatibility – a choice of frequencies and memory capacities address common global installations and protocols
4.Reliable and consistent performance – no line-of-sight required and supports all major RFID frequencies and standards.

Rfid waste bin tag Personalization

1. Chip encoding
2. ID Number Printing: Digital Printing, Laser Engrave Printing

Rfid waste bin tag Available Chips

LF:125KHz RFID: EM4102,EM4100,EM4200,TK4100,GK4001; EM4305,EM4550,EM4069; T5577; Hitag1,Hitag2,HitagS256 etc.

HF:13.56Mhz ISO14443A: MIFARE Classic1k, MIFARE2k,F08, MIFARE 8K, MIFARE Ultralight, ISO18092: NTAG203, NTAG210 Micro, NTAG210, NTAG212, NTAG213,NTAG215,NTAG216,Topaz512,ISO15693: I. CODE SLI,I. CODE SLI-L,I. CODE SLI-S,LEGIC MIM256,TI208 etc.

UHF:860-960 MHz Gen 2: UCODE, MONZA, HIGGS, etc.

What Are Screw Shaft Threads?

Coefficient of friction between the mating surfaces of a nut and a screw shaft

Helix angle

Thread angle

Material

Self-locking features

China manufacturer 134.2kHz Hdx Waste Bin Tag/ Worm Tag /Trash Can Label for Waste Management with Good quality

China Standard Worm gear Servo Hydraulic Universal Testing Machine TIME WAW-500C near me supplier

Product Description

Brief Introduction:
WAW-600C computer controlled servo hydraulic universal testing machine is mainly used to execute the tension, compression, bending, flexural etc. Test for metal materials. Attached with simple accessories and devices, it can be used to test wood, concrete, cement, rubber, and so on. It is very suitable for making test to different metal or nonmetal materials under high toughness and hardness against extreme big loading force.

Standards: In accordance with or exceed the requirements of the ISO6892.

C Type Load Frame: The oil cylinder is at the bottom of the load frame. Tension space is at the upside and compression & bending spaces are between lower crosshead and working table. It is adopting oil hydraulic power to push the piston in the oil cylinder to provide loading force. The lower crosshead is driven by the motor and gear inside it to realize the adjustment of testing space. The leading screws are fixed into the machine seat

And never turn during the space adjusting & testing to guarantee the machine stability and longer life span.

Specification						WAW-Y500C
Max. capacity (KN)						500
Measuring range						2%-100% of FS
Relative error of reading						≤ ± 1%
Uniform speed stress control range(N/mm² • S¯ ¹ )						2-60
Stress velocity tolerance						≤ ± 5%
Uniform speed strain control range						0.00571/s – 0.0571/s
Strain velocity tolerance						≤ ± 5%
Uniform speed displacement control range(mm/min)						0.5-50
Displacement velocity relative error						≤ ± 5%
Clamping method						Hydraulic clamping
Round specimen clamping range(mm):						Φ 15-Φ 50
Flat specimen clamping range(mm):						0-50
Flat specimen clamping width(mm)						60
Max. tension test space (mm)						900
Max. compression test space (mm)						800
Cabinet dimensions (mm)						600480960
Load frame dimensions (mm)						11807502900
Motor power (KW)						3
Load frame weight (KG)						2700
Column distance (mm)						650
Compression platen size (mm)						Φ 120
Span of bending roller (mm)						600
Width of bending roller (mm)						160
Allowable camber (mm)						155
Max. piston stroke (mm)						250
Piston max. speed (mm/min)						Approx. 70
Test speed adjusting speed (mm/min)						Approx. 200

What Are Screw Shaft Threads?

Coefficient of friction between the mating surfaces of a nut and a screw shaft

Helix angle

Thread angle

Material

Self-locking features

China Standard Worm gear Servo Hydraulic Universal Testing Machine TIME WAW-500C near me supplier

China Best Sales Galvanized Steel Worm Screw British Type V Band Automotive Hose Clamp for Flexible Hose Pipe near me shop

Product Description

Galvanized Steel Worm Screw British Type V Band Automotive Hose Clamp For Flexible Hose Pipe

Technical Date

Item No	Range	Band Width	Package
Item No	MM	MM	Pcs/Carton
FSHY09008	8-14	9.7	2000
FSHY 0571 1	11-17	9.7	2000
FSHY 0571 3	13-20	9.7	2000
FSHY12015	15-24	11.7	500
FSHY12019	19-28	11.7	500
FSHY12571	22-32	11.7	500
FSHY12026	26-38	11.7	500
FSHY12032	32-44	11.7	500
FSHY12038	38-50	11.7	500
FSHY12044	44-56	11.7	500
FSHY12050	50-65	11.7	500
FSHY12058	58-75	11.7	200
FSHY12068	68-85	11.7	200
FSHY12077	77-95	11.7	200
FSHY12087	87-112	11.7	200
FSHY12104	104-138	11.7	100
FSHY12130	130-165	11.7	100
FSHY12150	150-180	11.7	100
FSHY12175	175-205	11.7	100
FSHY12200	200-231	11.7	50
FSHY12226	226-256	11.7	50
FSHY12251	251-282	11.7	50
FSHY12277	277-307	11.7	50

W1:Band,housing and screw are all galvanized steel zinc planted

W2:Screw is galvanzied steel zinc plated,band and housing are made of SS304

W4:Band,housing and screw are made of SS 304

W5:Band,housing and screw are made of SS 316

Screw Shaft Features Explained

When choosing the screw shaft for your application, you should consider the features of the screws: threads, lead, pitch, helix angle, and more. You may be wondering what these features mean and how they affect the screw’s performance. This article explains the differences between these factors. The following are the features that affect the performance of screws and their properties. You can use these to make an informed decision and purchase the right screw. You can learn more about these features by reading the following articles.

Threads

The major diameter of a screw thread is the larger of the 2 extreme diameters. The major diameter of a screw is also known as the outside diameter. This dimension can’t be directly measured, but can be determined by measuring the distance between adjacent sides of the thread. In addition, the mean area of a screw thread is known as the pitch. The diameter of the thread and pitch line are directly proportional to the overall size of the screw.
The threads are classified by the diameter and pitch. The major diameter of a screw shaft has the largest number of threads; the smaller diameter is called the minor diameter. The thread angle, also known as the helix angle, is measured perpendicular to the axis of the screw. The major diameter is the largest part of the screw; the minor diameter is the lower end of the screw. The thread angle is the half distance between the major and minor diameters. The minor diameter is the outer surface of the screw, while the top surface corresponds to the major diameter.
The pitch is measured at the crest of a thread. In other words, a 16-pitch thread has a diameter of 1 sixteenth of the screw shaft’s diameter. The actual diameter is 0.03125 inches. Moreover, a large number of manufacturers use this measurement to determine the thread pitch. The pitch diameter is a critical factor in successful mating of male and female threads. So, when determining the pitch diameter, you need to check the thread pitch plate of a screw.
screwshaft

Lead

In screw shaft applications, a solid, corrosion-resistant material is an important requirement. Lead screws are a robust choice, which ensure shaft direction accuracy. This material is widely used in lathes and measuring instruments. They have black oxide coatings and are suited for environments where rusting is not acceptable. These screws are also relatively inexpensive. Here are some advantages of lead screws. They are highly durable, cost-effective, and offer high reliability.
A lead screw system may have multiple starts, or threads that run parallel to each other. The lead is the distance the nut travels along the shaft during a single revolution. The smaller the lead, the tighter the thread. The lead can also be expressed as the pitch, which is the distance between adjacent thread crests or troughs. A lead screw has a smaller pitch than a nut, and the smaller the lead, the greater its linear speed.
When choosing lead screws, the critical speed is the maximum number of revolutions per minute. This is determined by the minor diameter of the shaft and its length. The critical speed should never be exceeded or the lead will become distorted or cracked. The recommended operational speed is around 80 percent of the evaluated critical speed. Moreover, the lead screw must be properly aligned to avoid excessive vibrations. In addition, the screw pitch must be within the design tolerance of the shaft.

Pitch

The pitch of a screw shaft can be viewed as the distance between the crest of a thread and the surface where the threads meet. In mathematics, the pitch is equivalent to the length of 1 wavelength. The pitch of a screw shaft also relates to the diameter of the threads. In the following, the pitch of a screw is explained. It is important to note that the pitch of a screw is not a metric measurement. In the following, we will define the 2 terms and discuss how they relate to 1 another.
A screw’s pitch is not the same in all countries. The United Kingdom, Canada, and the United States have standardized screw threads according to the UN system. Therefore, there is a need to specify the pitch of a screw shaft when a screw is being manufactured. The standardization of pitch and diameter has also reduced the cost of screw manufacturing. Nevertheless, screw threads are still expensive. The United Kingdom, Canada, and the United States have introduced a system for the calculation of screw pitch.
The pitch of a lead screw is the same as that of a lead screw. The diameter is 0.25 inches and the circumference is 0.79 inches. When calculating the mechanical advantage of a screw, divide the diameter by its pitch. The larger the pitch, the more threads the screw has, increasing its critical speed and stiffness. The pitch of a screw shaft is also proportional to the number of starts in the shaft.

Helix angle

The helix angle of a screw shaft is the angle formed between the circumference of the cylinder and its helix. Both of these angles must be equal to 90 degrees. The larger the lead angle, the smaller the helix angle. Some reference materials refer to angle B as the helix angle. However, the actual angle is derived from calculating the screw geometry. Read on for more information. Listed below are some of the differences between helix angles and lead angles.
High helix screws have a long lead. This length reduces the number of effective turns of the screw. Because of this, fine pitch screws are usually used for small movements. A typical example is a 16-mm x 5-inch screw. Another example of a fine pitch screw is a 12x2mm screw. It is used for small moves. This type of screw has a lower lead angle than a high-helix screw.
A screw’s helix angle refers to the relative angle of the flight of the helix to the plane of the screw axis. While screw helix angles are not often altered from the standard square pitch, they can have an effect on processing. Changing the helix angle is more common in two-stage screws, special mixing screws, and metering screws. When a screw is designed for this function, it should be able to handle the materials it is made of.
screwshaft

Size

The diameter of a screw is its diameter, measured from the head to the shaft. Screw diameters are standardized by the American Society of Mechanical Engineers. The diameters of screws range from 3/50 inches to 16 inches, and more recently, fractions of an inch have been added. However, shaft diameters may vary depending on the job, so it is important to know the right size for the job. The size chart below shows the common sizes for screws.
Screws are generally referred to by their gauge, which is the major diameter. Screws with a major diameter less than a quarter of an inch are usually labeled as #0 to #14 and larger screws are labeled as sizes in fractions of an inch. There are also decimal equivalents of each screw size. These measurements will help you choose the correct size for your project. The screws with the smaller diameters were not tested.
In the previous section, we described the different shaft sizes and their specifications. These screw sizes are usually indicated by fractions of an inch, followed by a number of threads per inch. For example, a ten-inch screw has a shaft size of 2” with a thread pitch of 1/4″, and it has a diameter of 2 inches. This screw is welded to a two-inch Sch. 40 pipe. Alternatively, it can be welded to a 9-inch O.A.L. pipe.
screwshaft

Shape

Screws come in a wide variety of sizes and shapes, from the size of a quarter to the diameter of a U.S. quarter. Screws’ main function is to hold objects together and to translate torque into linear force. The shape of a screw shaft, if it is round, is the primary characteristic used to define its use. The following chart shows how the screw shaft differs from a quarter:
The shape of a screw shaft is determined by 2 features: its major diameter, or distance from the outer edge of the thread on 1 side to the inner smooth surface of the shaft. These are generally 2 to 16 millimeters in diameter. Screw shafts can have either a fully threaded shank or a half-threaded shank, with the latter providing better stability. Regardless of whether the screw shaft is round or domed, it is important to understand the different characteristics of a screw before attempting to install it into a project.
The screw shaft’s diameter is also important to its application. The ball circle diameter refers to the distance between the center of 2 opposite balls in contact with the grooves. The root diameter, on the other hand, refers to the distance between the bottommost grooves of the screw shaft. These are the 2 main measurements that define the screw’s overall size. Pitch and nominal diameter are important measurements for a screw’s performance in a particular application.

Lubrication

In most cases, lubrication of a screw shaft is accomplished with grease. Grease is made up of mineral or synthetic oil, thickening agent, and additives. The thickening agent can be a variety of different substances, including lithium, bentonite, aluminum, and barium complexes. A common classification for lubricating grease is NLGI Grade. While this may not be necessary when specifying the type of grease to use for a particular application, it is a useful qualitative measure.
When selecting a lubricant for a screw shaft, the operating temperature and the speed of the shaft determine the type of oil to use. Too much oil can result in heat buildup, while too little can lead to excessive wear and friction. The proper lubrication of a screw shaft directly affects the temperature rise of a ball screw, and the life of the assembly. To ensure the proper lubrication, follow the guidelines below.
Ideally, a low lubrication level is appropriate for medium-sized feed stuff factories. High lubrication level is appropriate for larger feed stuff factories. However, in low-speed applications, the lubrication level should be sufficiently high to ensure that the screws run freely. This is the only way to reduce friction and ensure the longest life possible. Lubrication of screw shafts is an important consideration for any screw.

China Best Sales Galvanized Steel Worm Screw British Type V Band Automotive Hose Clamp for Flexible Hose Pipe near me shop

China Good quality Worm Twin Screw Small Handle Homemade Soybean Oil Press with Free Design Custom

Product Description

worm twin screw small handle homemade soybean oil press

Product Description

1. The main part adopts hard chrome plating process, and the color is uniform and does not fade.
2. Lower the bottom plate of the host to increase dust resistance.
3. Original stainless steel, exquisite appearance and low failure rate.
4. The pressure value in actual work is greater, the oil output rate is higher, and the safety is higher.
5. The load-bearing panel and load-bearing column are made of characteristic steel instead of ordinary steel to ensure durability and safety.
6. Each mm of key parts is professionally inspected. Any plate is discarded if there is a problem. No defective plate is allowed for equipment manufacturing.
7. Use high-quality motor to ensure strong heart power. Low failure rate.

Application

Product Show

WHY US ?
Focus on manufacturing food machinery, understand the machine, and understand you better.

Stable quality	Professional customization	Fast delivery on time	Professional after sales service

1,20 years of experience in food machinery production 2,15 professional engineers 3,Professional quality inspection process	1,10 years of export experience 2,9 years OEM/ODM experience 3,Service customized customers over 80	1,Stable supply chain,Core accessories we produce ourselves 2,20 skilled workers 3,common models and parts standing stock	1,1 year warranty 2,7 * 24 hours technical support 3,A comprehensive after-sales service system ensures long-term cooperation

Our Advantages

Business Partners

In the past 10 years of foreign trade transactions, we are honored to serve more than 1,500 customers, deal with 153 international visiters, and have long-term relationships with 56 customers all over the world (Europe, South America, Asia, Middle East, Asia, Australia, etc.).
My friend, we sincerely welcome you to visit us at any time.
GOOD REVIEWS
Even in the current situation, many customers are unable to visit our factory, but there are still many partners who choose to trust us, and the praise of customers recognizes our strength.

Packaging & Shipping

FAQ

Q1: – Can i request customize service?
A: Yes, dear sir, we can also customize voltage, material, colour, nameplate etc., and meet your other special request.
Q2: – What is the advantage of your factory?
A: Here we’re your “Chinese Partner”, accurate market sharing, reliable investment suggestion, select right machine, quick problem solver, reliable after-sales service, minimize purchasing risk.
Q3: – What service do you supply after order?
A: Your order will be fully tracked including production, professional quality control, strong logistics teamwork working and experienced customs documents preparation, you can get One-stop service from us.
Q4: – How to solve the after-sales problem?
A: You can send us a video or pictures to explain the problem, later we can give you a solution to solve it, if it is our responsibility, we will 100% in charge of it and try our best to make you satisfied, we pursue long term cooperation always.

Contact Freely

Screw Shaft Features Explained

Threads

Lead

Pitch

Helix angle

Size

Shape

Lubrication

China Good quality Worm Twin Screw Small Handle Homemade Soybean Oil Press with Free Design Custom

China Custom Micro Look Mineral Fiber Ceiling Board (Lovely worm) with high quality

Product Description

Mineral Fiber Ceiling Board

1.;Dimension
595&ast;595mm,; 6
Please feel free to contact us.; We have dealt in the celing material business line for 12 years.; We will offer qualified product with experienced service.;

Screw Shaft Features Explained

Threads

Lead

Pitch

Helix angle

Size

Shape

Lubrication

China Custom Micro Look Mineral Fiber Ceiling Board (Lovely worm) with high quality

China Best Sales Worm Conical Hypoid Pairs Gear Dana D44456fjk for Jeep CZPT Made in China near me manufacturer

Product Description

Car Fitment	2 ANO 1985(CJ6)
D44427X	47*11	CHRYSLER
D44538	43*8
D44-3-342	41*12	660150
D6571	37*9	74905 CZPT 3F,D60-411,9X37
D6571	41*10	24807(FORD250)
D6571	41*11	25538
D6 0571	46*13	24813
D6 0571	41*9	FORD F250
D6 0571 X	41*9
D6571	41*8
D6571R	41*8
D60586	41*7
D6571	43*8	Isuzu NHR,D60-586 7*41
D6571R	43*8
D60488	39*8
D60488R	39*8
D70488	39*8	72148
D7571	41*10	72153
D7571	41*11	72159
D7571	41*8	72150 C30/P30 F350 41*8 5.3
D7 0571	41*9	72152 CZPT F350 75-80
D7 0571 X	46*13	72168
D70-1-410	41*10	72154 CZPT F350 BAJA 75/80 41*10 4.10
D70586	41*7	72156 D300/P300 41*7 5.86
D75-410	41*10	BA457171-X CZPT Cargo
D75-462	37*8	BA457104-X
D8571	41*8	73168
D8571	41*10	73200
D8571X	41*40
D80430	43*10	76128
D80488	39*8	76138
D80463	37*8	73167
D8571	41*11	76256
D8 0571	46*13	73353

Company Profile

HangZhou CZPT Machinery is a professional manufacture of spiral bevel gear. The company has CNC milling machine, the GLEASON milling machine, rolling inspection machine, gear measuring center, a full set of metallographic analysis, inspection equipment and other related advanced equipment.
Our company owns gear measuring center equipped with advanced testing machines such as contourgraph, universal measuring microscope and full set netlaaographic analysis detector. According to various technical requirements and through procedures of sampling, special inspection and re-examination, multi-indexes of gears like observation, measurement and tracking can be completed.
With our high quality products, high credibility and trusty cooperation, aiming to be a highly specialized gear manufacturer of high level and all-directional service,we are looking forward to your business negotiation and our promising cooperation.

FAQ

Q1: Are your products standard?
A: Our model is standard, if you have specific demand, pls tell us the details.
Q2: What is you main categories?
A: Commercial Vehicles Like Isuzu,Nissan, Hino, CZPT ,Toyota , Mazda ,Suzuki, Agricultural Machinery and Electric Storage.
Q3: If we don’t find what we want on your website, what should we do?
A: You can email us the descriptions and pictures of the products you need, we will check whether we have them.
B: We develop new items every month, and some of them have not been uploaded to website in time. Or you can send us sample by express, we will develop this item for bulk purchasing.
Q4: What is your terms of payment?
A: T/T 30% as deposit, and 70% before delivery. We’ll show you the photos of the products and packages before you pay the balance.
Q5:Do you test all your goods before delivery?
Yes, we have 100% test before delivery.

What Are Screw Shaft Threads?

Coefficient of friction between the mating surfaces of a nut and a screw shaft

Helix angle

Thread angle

Material

Self-locking features

China Best Sales Worm Conical Hypoid Pairs Gear Dana D44456fjk for Jeep CZPT Made in China near me manufacturer

China Good quality EU & Germany & American Worm Drive Hose Pipe Clamp with Good quality

Product Description

Detailed Photos

Worm gear hose clamps, also referred to as radiator clamps, jubilee clips, worm drive hose clamps, or screw hose clamps, are possibly the most widely used style of hose clamp. Worm gear hose clamps are designed with a captive worm gear screw attached to a steel band.

In our factory, we have full range of hose clamp, and own a complete inductry chain including molds processing, products manufacturing, surface treatment, rubber vulcanizing and screw production.

Products systems including:
1, Germany stype Non-perforated type with & without welded hose pipe clamps,
2, Italy style hose clamp,
3, MICOR perforeated hose pipe clamps,
4, American type perforated hose pipe clamps,
5, Quick release hose pipe clamp,
6, Constant Tension clamps,
7, T-Bolt hose pipe clamps,
8, Lihgt & heavy Unitary hose pipe clamps,
9, Double bolts & double bands super hose pipe clamps
10, Single & Double ears hose pipe clamps
11, pipe strap
12, hose pipe clamps with rubber
13, PP & PEX snap clip

Material

Band

Housing

Screw

Zinc plated steel

AISI 430ss/201ss

Zinc plated steel

AISI 301ss/304ss

AISI 316ss

German style hose clamp 9 & 12mm
Size (mm)	W1	W2	W4	W5	Packing
Size (mm)	W1	W2	W4	W5	pcs/bag	pcs/ctn
8-12	√	√	√	√	100	1000
10-16	√	√	√	√	100	1000
12-22	√	√	√	√	100	1000
16-27	√	√	√	√	100	1000
20-32	√	√	√	√	100	500
25-40	√	√	√	√	100	500
30-45	√	√	√	√	50	500
35-50	√	√	√	√	50	500
40-60	√	√	√	√	50	500
50-70	√	√	√	√	50	500
60-80	√	√	√	√	50	500
70-90	√	√	√	√	50	500
80-100	√	√	√	√	50	500
90-110	√	√	√	√	50	500
100-120	√	√	√	√	25	250
110-130	√	√	√	√	25	250
120-140	√	√	√	√	25	250
130-150	√	√	√	√	25	250
140-160	√	√	√	√	25	250

Welding Type Clamps M8 With Rubber
Model Number	D(mm)	R(mm)	INCH	Band thickness and width
JM-HC001519	18	15-19	3/8″	20*(1.2~1.5)
JM-HC57125	22	20-25	1/2″	20*(1.2~1.5)
JM-HC002630	28	26-30	3/4″	20*(1.2~1.5)
JM-HC003236	35	32-36	1″	20*(1.2~1.5)
JM-HC003843	40	38-43	11/4″	20*(1.2~1.5)
JM-HC05711	48	47-51	11/2″	20*(1.2~1.5)
JM-HC05718	54	53-58		20*(1.2~1.5)
JM-HC006064	60	60-64	2″	20*(1.2~1.5)
JM-HC006872	70	68-72		20*(1.2~1.5)
JM-HC05710	75	75-80	21/2″	20*(1.2~1.5)
JM-HC008086	83	80-86		20*(1.2~1.5)
JM-HC0 0571 2	90	87-92	3″	20*(1.2~1.5)
JM-HC057105	100	99-105	31/2″	20*(1.2~1.5)
JM-HC5717112	110	107-112		20*(1.2~1.5)
JM-HC00113118	115	113-118	4″	20*(1.2~1.5)
JM-HC00125130	125	125-130		20*(1.2~1.5)
JM-HC00132137	133	132-137		20*(1.2~1.5)
JM-HC00136142	140	136-142	5″	20*(1.2~1.5)
JM-HC00159166	160	159-166	6″	20*(1.2~1.5)
JM-HC5715712	200	200-212		20*(1.2~1.5)

“U”Typy Without Rubber
Model Number	D(mm)	A*B	PCS/BOX	BOX/CARTON
JM-HC09006	6	12*1.2	100	10
JM-HC09008	8	12*1.2	100	10
JM-HC09571	10	12*1.2	100	10
JM-HC 0571 2	12	12*1.2	100	10
JM-HC 0571 4	14	12*1.2	100	10
JM-HC 0571 5	15	12*1.2	100	10
JM-HC 0571 6	16	12*1.2	100	10
JM-HC 0571 8	18	15*1.2	100	10
JM-HC09571	20	15*1.2	100	10
JM-HC571	22	15*1.2	100	10
JM-HC09571	24	15*1.2	100	10
JM-HC 0571 6	26	15*1.2	100	10
JM-HC09571	28	15*1.2	100	10
JM-HC 0571 0	30	15*1.2	50	10
JM-HC571	32	18*1.2	50	10
JM-HC 0571 7	37	18*1.2	50	10
JM-HC09040	40	18*1.2	50	10
JM-HC09042	42	18*1.2	50	10
JM-HC09047	47	18*1.2	50	10
JM-HC 0571 0	60	18*1.2	50	10

Welding Type Clamps M8+10 With Rubber
Model Number	D(mm)	R(mm)	INCH	Band thickness and width
JM-HC011519	18	15-19	3/8″	20*(1.8~2.0)
JM-HC012571	22	20-25	1/2″	20*(1.8~2.0)
JM-HC012630	28	26-30	3/4″	20*(1.8~2.0)
JM-HC013236	35	32-36	1″	20*(1.8~2.0)
JM-HC013843	40	38-43	11/4″	20*(1.8~2.0)
JM-HC014751	48	47-51	11/2″	20*(1.8~2.0)
JM-HC015358	54	53-58		20*(1.8~2.0)
JM-HC016064	60	60-64	2″	20*(1.8~2.0)
JM-HC016872	70	68-72		20*(1.8~2.0)
JM-HC017580	75	75-80	21/2″	20*(1.8~2.0)
JM-HC018086	83	80-86		20*(1.8~2.0)
JM-HC018792	90	87-92	3″	20*(1.8~2.0)
JM-HC0199105	100	99-105	31/2″	20*(1.8~2.0)
JM-HC0115712	110	107-112		20*(1.8~2.0)
JM-HC01113118	115	113-118	4″	20*(1.8~2.0)
JM-HC01125130	125	125-130		20*(1.8~2.0)
JM-HC01132137	133	132-137		20*(1.8~2.0)
JM-HC01136142	140	136-142	5″	20*(1.8~2.0)
JM-HC01159166	160	159-166	6″	20*(1.8~2.0)
JM-HC01205712	200	200-212		20*(1.8~2.0)
JM-HC01248252	250	248-252		20*(1.8~2.0)
JM-HC01312318	315	312-318		20*(1.8~2.0)

Welding Type Clamps M8+10 Without Rubber
Model Number	D(mm)	R(mm)	INCH	Band thickness and width
JM-HC57119	18	15-19	3/8″	20*(1.8~2.0)
JM-HC032571	22	20-25	1/2″	20*(1.8~2.0)
JM-HC032630	28	26-30	3/4″	20*(1.8~2.0)
JM-HC033236	35	32-36	1″	20*(1.8~2.0)
JM-HC033843	40	38-43	11/4″	20*(1.8~2.0)
JM-HC034751	48	47-51	11/2″	20*(1.8~2.0)
JM-HC57158	54	53-58		20*(1.8~2.0)
JM-HC036064	60	60-64	2″	20*(1.8~2.0)
JM-HC036872	70	68-72		20*(1.8~2.0)
JM-HC57180	75	75-80	21/2″	20*(1.8~2.0)
JM-HC038086	83	80-86		20*(1.8~2.0)
JM-HC038792	90	87-92	3″	20*(1.8~2.0)
JM-HC0399105	100	99-105	31/2″	20*(1.8~2.0)
JM-HC571712	110	107-112		20*(1.8~2.0)
JM-HC5713118	115	113-118	4″	20*(1.8~2.0)
JM-HC5715130	125	125-130		20*(1.8~2.0)
JM-HC5712137	133	132-137		20*(1.8~2.0)
JM-HC5716142	140	136-142	5″	20*(1.8~2.0)
JM-HC5719166	160	159-166	6″	20*(1.8~2.0)
JM-HC03205712	200	200-212		20*(1.8~2.0)
JM-HC03248252	250	248-252		20*(1.8~2.0)
JM-HC03312318	315	312-318		20*(1.8~2.0)

Company Profile

Established in 2003, HangZhou Jay&Min Sanitaryware Tech Co., Ltd. is a young and fast growing factory. We are a professional manufacturer and exporter of bathroom&Kitchen sanitaryware products, specially in Faucet aerator, Kitchen aerator, Hand shower and all kinds of hose clamps.. We are very strong in R&D capability. More importantly, we have a dedicated team who are ready to provide efficient and professional services to our customers at any time. Our Managing Department is responsible for company operation and development plHangZhou. Constant efforts are taken by them to make our service system more efficient, thus serve our customers better. “Customer First” is the principle that all these sections adhere to. We look forward to building rewarding relationships with clients worldwide.

FAQ

1. who are we?
We are based in ZHangZhoug, China, start from 2571,sell to Western Europe(11.11%),Eastern Asia(11.11%),Mid East(11.11%),Oceania(11.11%),Africa(11.11%),Southeast Asia(11.11%),Eastern Europe(11.11%),South America(11.11%),North America(11.11%). There are total about 11-50 people in our office.

2. how can we guarantee quality?
Always a pre-production sample before mass production;
Always final Inspection before shipment;

3.what can you buy from us?
Faucet Aerator,Water saving,LED aerator,Drain cleaner,hose clamp

4. why should you buy from us not from other suppliers?
We are a professional manufacturer of Kitchen & Bathroom sanitaryware, specially in Water saving faucet aerator, Kitchen swivel sprayer, LED kitchen sprayer, and all kinds of water saving parts in family water saving products.

5. what services can we provide?
Accepted Delivery Terms: FOB,CFR,CIF,FCA;
Accepted Payment Currency:USD,EUR,CNY;
Accepted Payment Type: T/T,L/C,D/P D/A;

What Are Screw Shaft Threads?

Coefficient of friction between the mating surfaces of a nut and a screw shaft

Helix angle

Thread angle

Material

Self-locking features

China Good quality EU & Germany & American Worm Drive Hose Pipe Clamp with Good quality

China best Wp Series Worm Reducer for Packaging Machinery and Cable Equipment with Best Sales

Product Description

Wpa Wps Low Speed Worm Gear Speed Reducer

Structure Feature

1. Widely used in light industry, good resistance to wearing, with high precision in dimensions, lower noise, advanced centric running castings

2. The housing is of strong hardness, compact structure

3. Stable transmission, low vibration, large ratio, canbe matched with various machines

Product Structural Drawing

Model Description

Total 60 families and more than 20,000types with different models, ratios, connections and installations can be selected to meet requirements of customers.

View Of Item

WPA worm gearbox

WPS worm gearbox

Notice of installation

1. The base-plate must be plane and stoutness, and the base-plate must be screwed down and shockproof

2. The connecting shaft of prime mover, gearbox and operation device must be coaxial installatios

3. The diameter tolerance zone of input and output shaft is H6, the holes of fittings(such as couplings, belt-pulley, sprocket wheel and so on) must properly mate the shaft, which prevents bearing from breakage because of over-loose mate

4. Drivers such as sprocket wheel and gear must be fitted close to bearings in order to reduce bending stress of hanging shaft

5. White assembling motor of WPD reducer, it is necessary that proper amount of butter applies to the worm shaft input hole and keyway, avoiding assembling too tightly and rusting after using for a long time

6. When ordering or using all kinds of WPD type, if the motor weight is bigger than the common, supporting set is required

Notice of usage

1. Before using, please check carefully whether the gearbox model, distance, ratio, input connecting method, output shaft structure, input and output shaft direction and revolving direction accord with requirement

2. According to the requirement of selecting lubricant oil in the product manual, please fill proper category and brand lubricant. And then screw on the vent-plug; Unlock the small cone-plug of vent-plug. Only after doing these, reducer is already for starting up running. The proper brand and adequate lubricant oil is required, replacing oil in time conforming to the request of product manual is also necessary, especially after using first 100 hours, it is required refilling new oil

3. When abnormal circumstances occur, please stop and check reducer per solutions and reasons for faults of reducer (allowable highest oil temperature is 95, under this temperature limit, if oil temperature no more goes up, please let reducer continue running)

COMPANY OVERVIEW

About Greensky Power

History: Greensky Power Co.,ltd was founded in Los Angeles in 2008 and has focused on manufacturing and supplying motor and gearbox for 8 years since 2008.
Market: Greensky Power has customers in 30 different countries. Germany, Austria, Japan, USA and Middle-East are our main market.
Honors:Greensky Power is member of a council in ZHangZhoug Solar Association which is the biggest renewable energy association in Southeast of China.

Greensky’s Advantage

Price	Competitive & Reasonable. Our mission is to “Greening the World”. Distributing massively in a cheap price is our strategy. We want more and more people are using high effeciency motor and gearbox.
Quality	Quality control is done by 4 processes: Manufacturer Control + Material Control + Production Control + Finished Goods Control.
Delivery	100% on-time delivery Guaranteed
Evaluation	100% Customer Satisfaction Guaranteed
Services	English, German, Japanese and Chinese sales representatives are available for One-stop full services.
Business type	Manufacture & Trading & EPC. Greensky Power has subsidiary company producing solar panels which makes our price very competitive. At same time, Greensky Power has a subsidiary EPC company which can give professional technical support for complicated technical questions.
Experience	Our products have been sold to strict clients in Germany and Japan. They are all satisfied with our products. Delivering quality products and convenient communication service are our goal.

On the site you can find a range of products including worm gearbox, DC gear motor,AC gear motor, and their relevant components.

FAQ

1 Q:What infomation should I tell you to confirm the worm gearbox?

A: Model/Size B:Ratio and output torque C:Power and flange type D:Order quantity.

2 Q: What if I don’t know which worm gearbox need?
A:Don’t worry, Send as much information as you can, our team will help you find the right 1 you are looking for.

3 Q:How long should I wait for the feedback after I send the enquiry?
A: Within 12 hours.

4 Q:What is your warrenty period for worm gearbox?

A:We offer 1 year warrenty since the vessel departure date left China.

5 Q:What industries are your worm gearbox being used?

A:Our worm gearbox are widely used in the areas of household appliances and light industry,etc.

6. Q:How to delivery:

A: By sea – Buyer appoint forwarder, or our sales team find suitable forwarder for buyers.

By air – Buyer offer collect express account, or our sales team find suitable express for buyers. (Mostly for sample)

Others – We arrange to delivery goods to some place in China appointed by buyers.

7. When you place an order, our team will confirm with you about color, package,method of payment and delivery, then a sales contract will be sent to you to confirm.

If you have any other questions, please feel free to contact us.

Screw Shaft Types

A screw shaft is a cylindrical part that turns. Depending on its size, it is able to drive many different types of devices. The following information outlines the different types of screws, including their sizes, material, function, and applications. To help you select the right screw shaft, consider the following factors:
screwshaft

Size

A screw can come in a variety of shapes and sizes, ranging from a quarter to a quarter-inch in diameter. A screw is a cylindrical shaft with an inclined plane wrapped around it, and its main function is to fasten objects together by translating torque into a linear force. This article will discuss the dimensions of screws and how to determine the size of a screw. It is important to note that screw sizes can be large and small depending on the purpose.
The diameter of a screw is the diameter of its shaft, and it must match the inner diameter of its nuts and washers. Screws of a certain diameter are also called machine screws, and they can be larger or smaller. Screw diameters are measured on the shaft underneath the screw head. The American Society of Mechanical Engineers (ASME) standardized screw diameters in 3/50-inch to 16 (3/8-inch) inches, and more recently, sizes were added in U.S. fractions of an inch. While shaft and head diameters are standardized, screw length may vary from job to job.
In the case of the 2.3-mm screw group, the construct strength was not improved by the 1.2-mm group. The smaller screw size did not increase the strength of the construct. Further, ABS material did not improve the construct strength. Thus, the size of screw shaft is an important consideration in model design. And remember that the more complex your model is, the larger it will be. A screw of a given size will have a similar failure rate as a screw of a different diameter.
Although different screw sizes are widely used, the differences in screw size were not statistically significant. Although there are some limitations, screws of different sizes are generally sufficient for fixation of a metacarpal shaft fracture. However, further clinical studies are needed to compare screw sizes for fracture union rates. So, if you are unsure of what size of screw shaft you need for your case, make sure to check the metric chart and ensure you use the right one.
screwshaft

Material

The material of a screw shaft plays an important role in the overall performance of a screw. Axial and central forces act to apply torque to the screw, while external forces, such as friction, exert a bending moment. The torsional moments are reflected in the torque, and this causes the screw to rotate at a higher rate than necessary. To ensure the longevity of the screw, the material of the screw shaft should be able to handle the bending moment, while the diameter of the shaft should be small enough to avoid causing damage.
Screws are made from different metals, such as steel, brass, titanium, and bronze. Manufacturers often apply a top coating of chromium, brass, or zinc to improve corrosion resistance. Screws made of aluminum are not durable and are prone to rusting due to exposure to weather conditions. The majority of screw shafts are self-locking. They are suited for many applications, including threaded fasteners, C-clamps, and vises.
Screws that are fabricated with conical sections typically feature reduced open cross-sectional areas at the discharge point. This is a key design parameter of conical screw shafts. In fact, reductions of up to 72% are common across a variety of applications. If the screw is designed to have a hard-iron hanger bearing, it must be hardened. If the screw shaft is not hardened, it will require an additional lubricant.
Another consideration is the threads. Screw shafts are typically made of high-precision threads and ridges. These are manufactured on lathes and CNC machines. Different shapes require different materials. Materials for the screw shaft vary. There are many different sizes and shapes available, and each 1 has its own application. In addition to helical and conical screw shafts, different materials are also available. When choosing material, the best 1 depends on the application.
The life of the screw depends on its size, load, and design. In general, the material of the screw shaft, nut body, and balls and rollers determine its fatigue life. This affects the overall life of the screw. To determine whether a specific screw has a longer or shorter life, the manufacturer must consider these factors, as well as the application requirements. The material should be clean and free of imperfections. It should be smooth and free of cracks or flaking, which may result in premature failure.

Function

The function of a screw shaft is to facilitate the rotation of a screw. Screws have several thread forms, including single-start, double-start and multi-start. Each form has its own advantages and disadvantages. In this article we’ll explore each of them in detail. The function of a screw shaft can vary based on its design, but the following are common types. Here are some examples of screw shaft types and their purposes.
The screw’s torque enables it to lift objects. It can be used in conjunction with a bolt and nut to lift a load. Screws are also used to secure objects together. You can use them in screw presses, vises, and screw jacks. But their primary function is to hold objects together. Listed below are some of their main functions. When used to lift heavy loads, they can provide the required force to secure an object.
Screws can be classified into 2 types: square and round. Square threads are more efficient than round ones because they apply 0deg of angle to the nut. Square threads are also stronger than round threads and are often used in high-load applications. They’re generally cheaper to manufacture and are more difficult to break. And unlike square threads, which have a 0deg thread angle, these threads can’t be broken easily with a screwdriver.
A screw’s head is made of a series of spiral-like structures that extend from a cylindrical part to a tip. This portion of the screw is called the shank and is made of the smallest area. The shank is the portion that applies more force to the object. As the shaft extends from the head, it becomes thinner and narrow, forming a pointed tip. The head is the most important part of the screw, so it needs to be strong to perform its function.
The diameter of the screw shaft is measured in millimeters. The M8 screw has a thread pitch of 1.25 mm. Generally, the size of the screw shaft is indicated by the major and minor diameter. These dimensions are appended with a multiplication sign (M8x1).
screwshaft

Applications

The design of screws, including their size and shape, determines their critical rotating speeds. These speeds depend on the threaded part of the screw, the helix angle, and the geometry of the contact surfaces. When applied to a screw, these limits are referred to as “permissible speed limits.” These maximum speeds are meant for short periods of time and optimized running conditions. Continuous operation at these speeds can reduce the calculated life of a nut mechanism.
The main materials used to manufacture screws and screw shafts include steel, stainless steel, titanium, bronze, and brass. Screws may be coated for corrosion resistance, or they may be made of aluminium. Some materials can be threaded, including Teflon and nylon. Screw threads can even be molded into glass or porcelain. For the most part, steel and stainless steel are the most common materials for screw shafts. Depending on the purpose, a screw will be made of a material that is suitable for the application.
In addition to being used in fasteners, screw shafts are used in micrometers, drillers, conveyor belts, and helicopter blades. There are numerous applications of screw shafts, from weighing scales to measuring lengths. If you’re in the market for a screw, make sure to check out these applications. You’ll be happy you did! They can help you get the job done faster. So, don’t delay your next project.
If you’re interested in learning about screw sizing, then it’s important to know the axial and moment loads that your screws will experience. By following the laws of mechanics and knowing the load you can calculate the nominal life of your screw. You can also consider the effect of misalignment, uneven loading, and shocks on your screw. These will all affect the life of your screw. Then, you can select the right screw.

China best Wp Series Worm Reducer for Packaging Machinery and Cable Equipment with Best Sales