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China best Lagging Drive Pulley with Plastic Coated Bearing Nylon Belt Pulley Plastic Nylon Gym Pulley with Bearing Plastic Nylon Pulley Sheaves Roller Bearing pulley drive

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Product Description


Item No. Door and Window Plastic Bearing Pulley
Dimensions OEM ODM
Material Bearing -Chrome steel, carbon steel, stainless steel
Plastic part- POM/ Nylon6 /Nylon66 +GF/PU/Rubber
Housing part – Plastic(Nylon)/ Steel/ Zinc alloy die casting / Aluminium profile/ alu. Alloy die casting
Color Original/black/white/Red/ Green/ Orange, or per customers’ requirement
Surface Treatment Zinc plated/Nickle Plated/Black treatment/ Painting/Electrophoretic treatment
Features heavy-duty,adjustable,low noise,easy installation,sliding smoothly,long life,standard,customized,etc.
Application Sliding window and door, Sliding accessories, furniture accessories etc.
Packaing Foil bag+Neutral Carton+Pallet, or per customers’ requirement
MOQ 1000 pcs
Lead Time According to the order q’ty
OEM& ODM Technical drawing or sample is needed

Company Profile


Haibite was set up in 1996 and located at HangZhou, a beautiful city in China. Our company is bearing manufacturer&bearing distributor. Since it was first established, CHINAMFG was dedicated in research, development and manufacture of bearings. Now, CHINAMFG has become main and 1 of the first grade suppliers of all kinds of bearings. We could develop the products constructed from different materials, structures, shapes, colors etc.

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.


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 bearing

4. why should you buy from us not from other suppliers?
Hardware pulley source factory,20 years professional bearing pulley experience

5. what services can we provide?
Accepted Delivery Terms: FOB,CFR,CIF,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 Advantages

Sliding 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 Notice

1.Pls 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 requirements
Finally, Please be sure to click “Contact supplier” to contact us, or “Call us” with any questions that you may have.

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Certification: ISO
Material: Nylon
Application: Chemical Industry, Grain Transport, Mining Transport, Power Plant
US$ 0.5/Piece
1 Piece(Min.Order)


Order Sample



Customized Request

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Currency: US$
Return&refunds: You can apply for a refund up to 30 days after receipt of the products.

bearing pulley

How does the choice of bearings impact the precision and performance of pulley systems?

The choice of bearings has a significant impact on the precision and performance of pulley systems. Bearings play a crucial role in supporting and enabling smooth rotational movement in pulley systems. Here are the ways in which the choice of bearings can affect precision and performance:

1. Radial and Axial Load Capacity:

The selection of bearings with appropriate load capacity is essential for maintaining the precision and performance of pulley systems. Bearings should be chosen based on the anticipated radial and axial loads in the system. Using bearings with inadequate load capacity can lead to premature wear, increased friction, and reduced accuracy in transmitting motion.

2. Friction and Efficiency:

High-quality bearings with low friction characteristics contribute to improved efficiency and precision in pulley systems. Bearings with lower friction minimize energy loss, reduce heat generation, and allow for smoother operation. This enables the pulley system to transmit motion more accurately and efficiently, resulting in better overall performance.

3. Rotational Speed:

The choice of bearings should consider the rotational speed requirements of the pulley system. High-speed applications require bearings specifically designed to withstand the associated forces and temperatures. Using bearings that are not suitable for the intended speed can lead to premature wear, overheating, and decreased precision in the pulley system.

4. Vibration and Noise:

Precision and performance can be affected by vibration and noise in pulley systems. Proper bearing selection, such as using bearings with higher radial stiffness, can help minimize vibration and noise levels. Reduced vibration improves the accuracy of motion transmission and enhances the overall performance of the pulley system.

5. Tolerance and Fit:

The choice of bearings should consider the required tolerance and fit in the pulley system. Bearings with tight tolerances and proper fit ensure accurate alignment and smooth operation. Precise fitting reduces play and backlash, resulting in improved precision and performance of the pulley system.

6. Durability and Maintenance:

Bearing selection influences the durability and maintenance requirements of pulley systems. High-quality bearings that are designed for longevity and reliability can reduce the need for frequent maintenance and replacement. This results in improved system uptime, reduced downtime, and enhanced overall performance.

By carefully considering the factors mentioned above and selecting appropriate bearings based on load capacity, friction characteristics, rotational speed, vibration resistance, tolerance, fit, and durability, the precision and performance of pulley systems can be optimized. Consulting with bearing manufacturers or experts can provide valuable guidance in choosing the most suitable bearings for specific pulley system requirements.

bearing pulley

Can bearing pulleys withstand heavy loads and high-speed rotations?

Yes, bearing pulleys are designed to withstand heavy loads and high-speed rotations, provided that they are selected and used appropriately for the specific application requirements. Here are some key factors to consider:

1. Load Capacity:

Bearing pulleys are available in various load capacities, ranging from light-duty to heavy-duty options. The load capacity of a pulley depends on factors such as its size, construction, bearing type, and material. It is crucial to select a pulley with an adequate load rating that can handle the expected loads in the application.

2. Bearing Type:

The type of bearing used in the pulley plays a significant role in determining its ability to withstand heavy loads and high-speed rotations. Common types of bearings used in pulleys include deep groove ball bearings, angular contact bearings, and cylindrical roller bearings. These bearings are designed to handle radial and axial loads, providing robust support for the pulley.

3. Material and Construction:

The material and construction of the pulley itself also contribute to its load-bearing capacity. Pulleys are commonly made from materials such as steel, cast iron, aluminum, or engineered plastics. The choice of material depends on factors such as load requirements, durability, and environmental conditions.

4. Proper Installation:

To ensure the pulley can withstand heavy loads and high-speed rotations, it is crucial to follow proper installation practices. This includes correctly aligning the pulley, ensuring proper tensioning of belts, and securely mounting the pulley on the shaft. Improper installation can lead to increased stress on the pulley and bearings, potentially resulting in premature failure.

5. Lubrication and Maintenance:

Regular lubrication and maintenance are essential for the optimal performance of bearing pulleys under heavy loads and high-speed rotations. Adequate lubrication reduces friction, dissipates heat, and helps prevent premature wear. Following the manufacturer’s recommendations for lubrication intervals and using the appropriate lubricant is crucial.

It is important to consult the manufacturer’s specifications and guidelines to ensure that the selected bearing pulleys are suitable for the specific application requirements, including the anticipated loads and operating speeds. By choosing the right pulley and implementing proper maintenance practices, bearing pulleys can effectively withstand heavy loads and high-speed rotations, providing reliable and efficient operation.

bearing pulley

Are there different configurations and sizes of bearing pulleys available?

Yes, there are different configurations and sizes of bearing pulleys available to suit various applications and system requirements. Let’s explore the different aspects of configurations and sizes of bearing pulleys:

1. Configuration:

Bearing pulleys can be found in different configurations, each designed for specific purposes:

  • Flat Belt Pulleys: These pulleys have a flat surface and are suitable for use with flat belts or conveyor belts.
  • V-Belt Pulleys: V-belt pulleys have a V-shaped groove that accommodates V-belts, offering better grip and power transmission.
  • Timing Belt Pulleys: Timing belt pulleys have teeth or grooves that mesh with corresponding teeth on timing belts, ensuring precise rotational synchronization.
  • Idler Pulleys: Idler pulleys are used to guide and tension belts in a system, ensuring proper belt alignment and tension.
  • Tensioner Pulleys: Tensioner pulleys are designed to maintain optimal belt tension in belt-driven systems, reducing slippage and improving power transmission.

2. Size:

Bearing pulleys are available in a wide range of sizes to accommodate different applications and load requirements. The size of a bearing pulley is typically determined by its outer diameter, bore diameter, and width. Pulley sizes can vary from small pulleys used in precision equipment to large pulleys used in heavy-duty industrial applications.

3. Material:

As mentioned earlier, bearing pulleys are constructed from various materials such as steel, cast iron, aluminum, nylon, and others. The material selection depends on factors such as load capacity, durability, corrosion resistance, and cost considerations.

4. Customization:

In addition to standard configurations and sizes, bearing pulleys can often be customized to meet specific application requirements. Customization options may include modifications to the pulley design, material selection, surface coatings, and other features tailored to the needs of the system.

Overall, the availability of different configurations, sizes, and customization options allows for the selection of bearing pulleys that best match the requirements of a particular application, ensuring optimal performance and efficiency.

China best Lagging Drive Pulley with Plastic Coated Bearing Nylon Belt Pulley Plastic Nylon Gym Pulley with Bearing Plastic Nylon Pulley Sheaves Roller Bearing   pulley driveChina best Lagging Drive Pulley with Plastic Coated Bearing Nylon Belt Pulley Plastic Nylon Gym Pulley with Bearing Plastic Nylon Pulley Sheaves Roller Bearing   pulley drive
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