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China Standard 625 U Type Wheel Bearing Plastic PulleySheave with Smooth Bearing Steel Bearing for House Use Appliance Size 522.56.7 mm pulley system

Warranty: 3 years
Applicable Industries: Hotels, Garment Shops, Building Material Shops, Manufacturing Plant, Machinery Repair Shops, Food & Beverage Factory, Restaurant, Home Use, Retail, Food Shop, Printing Shops, Construction works , Food & Beverage Shops, Advertising Company
Customized support: OEM, ODM
Type: U-BELT, Door
Material: Nylon
Color: Customized Color
Size: Customer’s Drawing
Usage: Wide Range
Feature: Low Noise
Function: Multi Function
MOQ: 1000pcs
Packing: Carton
Pulley Type: U-Type Belt
Quality: Excellent
Packaging Details: Inner carton packing,External free steaming tray
Port: HangZhou,HangZhou

Nylon is a strong, stiff engineering plastic with outstanding bearing and wear properties.Nylon pulley has been widely used in different areas.
Nylon is frequently used to replace metal bearings and bushings, often eliminating the need for external lubrication. Other benefits include a reduction in part weight, less operating noise, and decreased wear on mating parts.

Item No.Door and Window Plastic Nylon Bearing Pulley
DimensionsOEM ODM
MaterialBearing -Chrome steel, carbon steel, stainless steelPlastic part- POM/ Nylon6 /Nylon66 +GF/PU/RubberHousing part – Plastic(Nylon)/ Steel/ Zinc alloy die casting / Aluminium profile/ alu. Alloy die casting
ColorOriginal/black/white/Red/ Green/ Orange, or per customers’ requirement
Surface TreatmentZinc plated/Nickle Plated/Black treatment/ Painting/Electrophoretic treatment
Featuresheavy-duty,adjustable,low noise,easy installation,sliding smoothly,long life,standard,customized,etc.
ApplicationSliding window and door, Sliding accessories, furniture accessories etc.
PackaingFoil bag+Neutral Carton+Pallet, 08B 10T Standard steel sprocket industrial transmission chain sprocket or per customers’ requirement
MOQ1000 pcs
Lead TimeAccording to the order q’ty
OEM& ODMTechnical drawing or sample is needed
Company Information

1. Our rollers are in stable quality with smooth rotation, long life operation, small movement, advanced injection technology engineering etc.2. The Adjustable Rollers with smooth and long lasting operation, higher performing features like wider adjustment ranges, long rolling life performance, easy installment. It’s available in multiple housing choices with any wheels to fit different aluminnum. Our roller ensure alignment across the full adjustment ranges within built-in retention system.3. The customized hardware, like plastic parts, stamping patrs, cold forging steel patrs are widely applied in the window and doors, furniture, householders, transmission system, industrial drive system etc.We are constantly improving and striving for excellent service. We hold a very high regard for our customers, the quality of our products, and our level of customer service.

Packaging & Shipping
1. who are we?We are based in ZheJiang , China, start from 2017,sell to North America(1.00%),Africa(1.00%),Western Europe(1.00%),Southern Europe(1.00%). There are total about 51-100 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?Bearing cage,Bearing pulley,Plastic products,Miniature bearing,Needle roller bearing4. why should you buy from us not from other suppliers?Hardware pulley source factory,20 years professional bearing pulley experience5. what services can we provide?Accepted Delivery Terms: FOB,CFR,CIF, Wholesale Price Accessories Bracelet New Fashion Stainless Steel 18K Gold Plated Fancy Chain Bracelets For Unisex EXW;Accepted Payment Currency:USD,EUR,JPY,CNY;Accepted Payment Type: T/T,L/C,D/P D/A;Language Spoken:English,Chinese,Spanish,Japanese,F

Our AdvantageSliding glass doors are becoming more and more popular, because of the view and natural lighting that they provide. But there can be some difficulty when it comes to maintaine them, such as the rollers have worn out. The key part is knowing which roller matches the original. Many people believe that alternatives can be found by identifying the door manufacturer individually. Actually, Most rollers are generic and used by various door manufacturers.As the professional manufacturer of sliding rollers, we use various identifying characteristics to determine the best replacement option for your door. In addition to the number of wheels your roller uses to support the door, the presence of dimples, bumps, cut-outs and flared edges on the rollers housing will narrow down replacement options substantially. The way that the assembly installs in the door frame is also vital. The key dimensions to confirm a replacement include the width and height of the roller’s outer housing, as well as the diameter of the wheel. In addition to the diameter of the wheels, the material that they’re made of, steel or nylon, is also a factor. Long-term, metal wheels are known to hold up better but they can also cause the track to wear out faster, especially on heavy doors. Nylon wheels tend to be kinder to the track but may not last as long as their steel counterparts.
Purchase Notice1.Please send us an inquiry or leave us a message, there will be a dedicated staff to serve you within 1 hours.2.You can ask us to take actual photos of the products for you, and free samples would be provided.3. Welcome to visit our factory to negotiate orders, we will do our best to protect the safety of your business journey.4. Packaging can be customized according to customer requirementsFinally, Please be sure to click “Contact supplier” to contact us, or “Call us” 2571 Hot sale moissanite jewelry white gold plated jewelry 925 silver VVS moissanite 6mm cuban chain necklace jiangyuan UGBA with any questions that you may have.


How to use the pulley system

Using a pulley system is a great way to move things around your home, but how do you use a pulley system? Let’s look at the basic equations that describe a pulley system, the types of pulleys, and some safety considerations when using pulleys. Here are some examples. Don’t worry, you’ll find all the information you need in one place!

Basic equations of pulley systems

The pulley system consists of pulleys and chords. When the weight of the load is pulled through the rope, it slides through the groove and ends up on the other side. When the weight moves, the applied force must travel nx distance. The distance is in meters. If there are four pulleys, the distance the rope will travel will be 2×24. If there are n pulleys, the distance traveled by the weight will be 2n – 1.
The mechanical advantage of the pulley system increases with distance. The greater the distance over which the force is applied, the greater the leverage of the system. For example, if a set of pulleys is used to lift the load, one should be attached to the load and the other to the stand. The load itself does not move. Therefore, the distance between the blocks must be shortened, and the length of the line circulating between the pulleys must be shortened.
Another way to think about the acceleration of a pulley system is to think of ropes and ropes as massless and frictionless. Assuming the rope and pulley are massless, they should have the same magnitude and direction of motion. However, in this case the quality of the string is a variable that is not overdone. Therefore, the tension vector on the block is labeled with the same variable name as the pulley.
The calculation of the pulley system is relatively simple. Five mechanical advantages of the pulley system can be found. This is because the number of ropes supporting the load is equal to the force exerted on the ropes. When the ropes all move in the same direction, they have two mechanical advantages. Alternatively, you can use a combination of movable and fixed pulleys to reduce the force.
When calculating forces in a pulley system, you can use Newton’s laws of motion. Newton’s second law deals with acceleration and force. The fourth law tells us that tension and gravity are in equilibrium. This is useful if you need to lift heavy objects. The laws of motion help with calculations and can help you better understand pulley systems.

Types of pulleys

Different types of pulleys are commonly used for various purposes, including lifting. Some pulleys are flexible, which means they can move freely around a central axis and can change the direction of force. Some are fixed, such as hinges, and are usually used for heavier loads. Others are movable, such as coiled ropes. Whatever the purpose, pulleys are very useful in raising and lowering objects.
Pulleys are common in many different applications, from elevators and cargo lift systems to lights and curtains. They are also used in sewing machine motors and sliding doors. Garage and patio doors are often equipped with pulleys. Rock climbers use a pulley system to climb rocks safely. These pulley systems have different types of pinions that allow them to balance weight and force direction.
The most common type of pulley is the pulley pulley system. The pulley system utilizes mechanical advantages to lift weight. Archimedes is thought to have discovered the pulley around 250 BC. in ancient Sicily. Mesopotamians also used pulleys, they used ropes to lift water and windmills. Pulley systems can even be found at Stonehenge.
Another type of pulley is called a compound pulley. It consists of a set of parallel pulleys that increase the force required to move large objects. This type is most commonly used in rock climbing and sailing, while composite pulleys can also be found in theater curtains. If you’re wondering the difference between these two types of pulleys, here’s a quick overview:

Mechanical Advantages of Pulley Systems

Pulley systems offer significant mechanical advantages. The ability of the system to reduce the effort required to lift weights increases with the number of rope loops. This advantage is proportional to the number of loops in the system. If the rope had only one loop, then a single weight would require the same amount of force to pull. But by adding extra cycles, the force required will be reduced.
The pulley system has the advantage of changing the direction of the force. This makes it easier to move heavy objects. They come in both fixed and mobile. Pulleys are used in many engineering applications because they can be combined with other mechanisms. If you want to know what a pulley can do, read on! Here are some examples. Therefore, you will understand how they are used in engineering.
Single-acting pulleys do not change direction, but compound pulleys do. Their mechanical advantage is six. The compound pulley system consists of a movable pulley and a fixed pulley. The mechanical advantage of the pulley system increases as the number of movable wheels decreases. So if you have two wheels, you need twice as much force to lift the same weight because you need a movable pulley.
The mechanical advantage of a pulley system can be maximized by adding more pulleys or rope lengths. For example, if you have a single pulley system, the mechanical advantage is one of the smallest. By using two or three pulleys, up to five times the mechanical advantage can be achieved. You can also gain up to ten times the mechanical advantage by using multiple pulley systems.
The use of a single movable pulley system also adds to the mechanical advantage of the pulley system. In this case, you don’t have to change the direction of the force to lift the weight. In contrast, a movable pulley system requires you to move the rope farther to generate the same force. Using a compound pulley system allows you to lift heavy loads with ease.

Safety Issues When Using Pulley Systems

Pulleys have an incredibly unique structure, consisting of a disc with a groove in the middle and a shaft running through it. A rope or cord is attached to one end of a pulley that turns when force is applied. The other end of the rope is attached to the load. This mechanical advantage means that it is much easier to pull an object using the pulley system than to lift the same object by hand.
Although pulley systems are a common part of many manufacturing processes, some employers do not train their workers to use them properly or install protection to prevent injury. It is important to wear proper PPE and follow standard laboratory safety practices during pulley system activities. Make sure any support structures are strong enough to handle the weight and weight of the rope or rope. If you do fall, be sure to contact your employer immediately.

China Standard 625 U Type Wheel Bearing Plastic PulleySheave with Smooth Bearing Steel Bearing for House Use Appliance Size 522.56.7 mm   pulley system	China Standard 625 U Type Wheel Bearing Plastic PulleySheave with Smooth Bearing Steel Bearing for House Use Appliance Size 522.56.7 mm   pulley system
editor by Cx 2023-07-11

China high quality The Queen Of Quality 8200663046 6072000270 1175100Q0B VKM36079 532067810 Belt Tensioner Assembly Tensioner Pulley Bearing Belt Tensioner Pulley For BENZ pulley drive

Product Description

NISSAN – OE-11927R
GATES: T36490
INA: 532067810
RPK: RPK571442
RUVILLE: 55632
SK: SK05712
SNR: GA35524
DACIA Logan I Saloon (LS) (Year of Construction 09.2004 – …)
DACIA Logan I MCV (KS) (Year of Construction 02.2007 – …)
DACIA Sandero I (SD) (Year of Construction 06.2008 – …)
DACIA Logan I Express (FS) (Year of Construction 03.2009 – …)
DACIA Logan I Pickup (US) (Year of Construction 03.2008 – …)
DACIA Duster Off-Road (Year of Construction 04.2571 – 01.2018)
DACIA Lodgy (JS_) (Year of Construction 03.2012 – …)
DACIA Dokker Estate (KE_) (Year of Construction 11.2012 – …)
DACIA Sandero II (Year of Construction 10.2012 – …)
DACIA Dokker Express (Year of Construction 12.2012 – …)
DACIA Logan II Saloon (L8) (Year of Construction 10.2012 – …)
DACIA Logan II MCV (L8) (Year of Construction 02.2013 – …)
DACIA Duster Van (Year of Construction 04.2011 – …)
DACIA Duster II (Year of Construction 10.2017 – …)
MERCEDES-BENZ Citan Dualiner (W415) (Year of Construction 11.2012 – …)
MERCEDES-BENZ Citan Panel Van (W415) (Year of Construction 11.2012 – …)
MERCEDES-BENZ Citan Traveliner / Estate (415) (Year of Construction 11.2012 – …)
NISSAN Cube (Z12) (Year of Construction 09.2007 – …)
NISSAN NV200 Box Body / Estate (M20) (Year of Construction 02.2571 – …)
NISSAN NV200 / Evalia Minibus (M20) (Year of Construction 07.2571 – …)
NISSAN NV250 Van (X61) (Year of Construction 07.2019 – …)
RENAULT Kangoo I (KC) (Year of Construction 08.1997 – …)
RENAULT Clio II Hatchback (BB, CB) (Year of Construction 09.1998 – 12.2016)
RENAULT Kangoo I Express (FC) (Year of Construction 08.1997 – …)
RENAULT Symbol / CZPT I (LB) (Year of Construction 02.1998 – …)
RENAULT Megane II Hatchback (BM, CM) (Year of Construction 07.2001 – 10.2012)
RENAULT Scénic II (JM) (Year of Construction 06.2003 – 07.2571)
RENAULT Megane II Saloon (LM) (Year of Construction 09.2003 – …)
RENAULT Megane II Sport Tourer (KM) (Year of Construction 08.2003 – 08.2012)
RENAULT Grand Scénic II (JM) (Year of Construction 04.2004 – 06.2009)
RENAULT Modus / Grand Modus (F, JP) (Year of Construction 09.2004 – …)
RENAULT Clio III Hatchback (BR0/1, CR0/1) (Year of Construction 01.2005 – 12.2014)
RENAULT Twingo II Hatchback (Year of Construction 03.2007 – …)
RENAULT Clio III Grandtour (Year of Construction 02.2008 – …)
RENAULT Kangoo II / Grand Kangoo (KW) (Year of Construction 02.2008 – …)
RENAULT Kangoo II Express (FW) (Year of Construction 02.2008 – …)
RENAULT Logan I Saloon (Year of Construction 09.2004 – …)
RENAULT Logan I Estate (KS) (Year of Construction 04.2007 – …)
RENAULT Kangoo II Be Bop (KW) (Year of Construction 02.2009 – …)
RENAULT Wind (Year of Construction 07.2571 – …)
RENAULT Clio IV Hatchback (BH) (Year of Construction 11.2012 – …)
RENAULT Clio IV Grandtour (KH) (Year of Construction 01.2013 – …)
RENAULT Captur (J5_, H5_) (Year of Construction 06.2013 – …)
RENAULT Clio III Van (SB_, SR_) (Year of Construction 06.2005 – …)
RENAULT Talisman Saloon (L2M_) (Year of Construction 06.2015 – …)
RENAULT Megane IV Hatchback (B9A/M/N) (Year of Construction 11.2015 – …)
RENAULT Talisman Grandtour (KP_) (Year of Construction 03.2016 – …)
RENAULT Megane IV Grandtour (K9A/M/N) (Year of Construction 04.2016 – …)
RENAULT Megane IV Saloon (Year of Construction 10.2016 – …)
RENAULT Megane II Box Body / Hatchback (KM0/2_) (Year of Construction 08.2003 – 07.2009)
RENAULT Twingo II Box Body / Hatchback (CNO_) (Year of Construction 09.2571 – 09.2014)


Materials with good quality are selected and tested layer by layer.

We have enthusiastic and timely online service and good after-sales service.

We have professional teams with technology, research and production.

We provide customers with better products and preferential prices.

After-sales Service: Professional and Responsible
Warranty: 1 Year or 50,000 Kms
Type: Tensioner Bearing
Material: Chrome Steel
Tolerance: N/a
Certification: ISO9001, TS16949
US$ 1/Set
1 Set(Min.Order)

Request Sample



Customized Request


The benefits of using pulleys

A pulley is a mechanical device that converts force into rotation. There are many advantages to using pulleys. Let’s take a look at a few of them. This article will describe the advantages, types, applications, and power sources of pulleys. You can then choose the pulley that best suits your specific needs. If you’re looking for a new tool to help you with a certain task, this article is for you.

Mechanical advantage

The mechanical advantage of a pulley can be defined as the ratio of applied force to the applied force. The mechanical advantage of a pulley can be calculated by considering several factors, including weight and friction. It can be calculated by the force applied per unit length of rope and the number of pulleys used. In a single-circuit system, the force required to lift a heavy object is equal to the user’s body weight.
The mechanical advantage of a pulley can be realized by comparing it to a seesaw. Both uses of rope are suitable for lifting objects. A rope four times heavier than a kilo is four times as effective. Because the forces on both sides of the pulley are equal, a small force is enough to move a large weight a short distance. The same force can be applied to a large mass to lift it several meters.
After introducing the concept of mechanical advantage, learners will practice using the pulley system. In addition to testing the pulley system, they should also calculate its mechanical advantage. Using either the instructor-provided handout or the learner’s workbook, students will determine how easily the pulley system functions. Once they have completed the test, they can discuss their results and how the system can be improved. These courses are best completed as part of a mini-unit or as a standalone main course.
The mechanical advantage of the pulley system is proportional to the number of rope loops. This circuit requires the same force as the dual circuit to lift heavy objects. A single lap requires only a third of the force to lift a double lap, while three laps require almost half the energy required for a single lap. The mechanical advantage of the pulley system becomes constant as the number of cycles increases.
The 3:1 Mechanical Advantage system feels like lifting a 300-pound load with three feet of rope. The three-foot-long rope moves the load one foot high. Understanding the mechanical advantages of pulleys is critical for rescuers when trying to create the perfect pulley system. Ideally, the pulley system will be anchored to a nearby rock, tree, pole or person – if the weight is not too heavy.

Types of pulleys

There are several types of pulleys. V-belt pulleys are the type commonly used in vehicles and electric motors. “V” pulleys require a “V” belt, and some even have multiple V grooves. “V” pulleys are often used in heavy duty applications for power transmission because they reduce the risk of power slippage.
Composite pulleys combine the properties of fixed and movable pulleys. Compound pulleys are able to change the direction of force while requiring relatively low force to move even the heaviest loads. Mechanical advantage is a measure of the effectiveness of a machine or equipment. It can be divided into three categories: force, distance and mechanics. Once you understand how each type works, you can design complex machines.
Fixed pulleys: These pulleys are the most basic type of pulleys. They use ropes and slotted wheels to move with the lifted object. Because they are so simple to set up, lifting heavy objects is a breeze. Although the moving object feels light, it is actually heavier than it actually is. These pulleys are used in construction cranes, utility elevators and many different industries.
Compound Pulley System: A pulley pulley is a combination of two fixed pulleys and one movable pulley. Compound pulley systems are effective for moving heavy objects because they have the largest force multipliers and are flexible enough to change the direction of the force as needed. Composite pulley systems are commonly used in rock climbing, theater curtains and sailing. If you’re looking for a pulley system, you can start by evaluating the types of pulleys and their uses.
Construction Pulleys: These are the most basic types of pulleys and have wheel rails. These pulleys can be lifted to great heights and attached to chains or ropes. They allow workers to access equipment or materials from greater heights. They are usually mounted on wheels with axles and secured with ropes. They are essential tools for construction workers. There are many different types of pulleys out there.

energy source

Belts and pulleys are mechanical devices used to transmit energy and rotational motion. The belt is connected to the rotating part of the energy source, and the pulley is mounted on the other. One pulley transmits power to the other, while the other changes the direction of the force. Many devices use this combination, including automobiles, stationary generators, and winches. It is used in many home applications, from conveyors to treadmills. Pulleys are also used for curtains in theater halls.
Pulley systems are an essential part of modern industry and everyday life. Pulleys are used in elevators, construction sites and fitness equipment. They are also used in belt-driven generators as backup power. Despite their simple and seemingly humble beginnings, they have become a versatile tool. From lifting heavy objects to guiding wind turbines, pulley systems are widely used in our daily lives.
The main reason why pulleys are so popular is the mechanical advantage they offer. They can lift a lot of weight by applying very little force over longer distances. For example, a small motor can pull 10 meters of cable, while a large motor can pull 1 meter. Also, the work done is equal to the force times the distance traveled, so the energy delivered to the large motor is the same.
The power source for the pulley system can be cables, belts or ropes. The drive element in a pulley system is usually a rope or cable. A belt is a loop of flexible material that transmits motion from one pulley to another. The belt is attached to the shaft and a groove is cut in the pulley. The belt then transfers energy from one pulley to the other through the system.


A pulley is a mechanical device used to lift heavy objects. They reduce the amount of work required to lift heavy objects and are an excellent choice for many applications. There are several different applications for pulleys, including elevators, grinders, planters, ladder extensions, and mountaineering or rock climbing. Let’s take a look at some of the most popular uses for pulleys in modern society. These include:-
A pulley is a mechanical device that changes force. To use, you wrap the rope around it and pull down to lift the object. While this device is very useful, a major limitation of using pulleys is that you still have to apply the same force to lift the object as you would without the pulleys. This is why people use pulleys to move large objects like furniture and cars.
In addition to lifting heavy objects, pulleys are used in elevators, flagpoles and wells. These systems allow people to move heavy objects without straining their backs. Many other examples of pulleys in the home include garage doors, flagpoles, and elevators. They also help raise and lower flagpoles, which can reach several stories high.
There are two basic types of pulleys: movable and fixed. Fixed pulleys are attached to a ceiling or other object using two ropes. Modern elevators and construction cranes use movable pulleys, as do some weight machines in gyms. Composite pulleys combine movable and fixed pulleys to minimize the force required to move heavy objects.
Another type of fixed pulley is the flagpole. A flagpole can support a country, organization, or anything else that needs to be lifted. A taller flagpole creates a prouder moment for those who support it. The operation of the rope and pulley mechanism is very simple. The user simply attaches the flag to the rope, pulls the pulley, and he or she can watch the flag rise and unfold.

China high quality The Queen Of Quality 8200663046 6072000270 1175100Q0B VKM36079 532067810 Belt Tensioner Assembly Tensioner Pulley Bearing Belt Tensioner Pulley For BENZ   pulley driveChina high quality The Queen Of Quality 8200663046 6072000270 1175100Q0B VKM36079 532067810 Belt Tensioner Assembly Tensioner Pulley Bearing Belt Tensioner Pulley For BENZ   pulley drive
editor by CX