China Good quality Durable Customized Green Size 5*20*5mm Low Noise Bearing Roller manufacturer

Product Description


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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: CE, ISO
Pulley Sizes: Type F
Manufacturing Process: Casting
US$ 0.01/Piece
1 Piece(Min.Order)


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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

What is the significance of bearing seals and lubrication in bearing pulleys?

Bearing seals and lubrication play a crucial role in bearing pulleys, providing significant benefits and ensuring optimal performance. Here is the significance of bearing seals and lubrication:

1. Contamination Protection:

Bearing seals are designed to prevent the ingress of contaminants such as dust, dirt, moisture, and other particles into the bearing. These seals create a barrier, shielding the internal components of the bearing from harmful substances. By keeping the bearing clean and free from contaminants, the seals help to maintain smooth operation, reduce wear, and prolong the lifespan of the bearing pulley.

2. Lubrication Retention:

Lubrication is essential for minimizing friction and wear between the bearing components. Proper lubrication reduces heat generation, prevents metal-to-metal contact, and ensures smooth rotation of the pulley. Bearing seals help retain the lubrication within the bearing, preventing its leakage or evaporation. This ensures a consistent and adequate supply of lubricant to the bearing surfaces, promoting efficient operation and extending the bearing’s life.

3. Extended Service Life:

The combination of effective sealing and proper lubrication significantly contributes to the extended service life of bearing pulleys. By protecting the bearing from contaminants and ensuring a sufficient supply of lubricant, the seals and lubrication help prevent premature wear, corrosion, and damage to the bearing components. This leads to increased reliability, reduced maintenance needs, and longer intervals between bearing replacements.

4. Performance and Efficiency:

Bearing seals and lubrication directly impact the performance and efficiency of bearing pulleys. Adequate lubrication reduces friction, allowing for smoother rotation and improved power transmission. Reduced friction results in higher efficiency, lower energy consumption, and enhanced overall performance of the pulley system. Additionally, proper sealing prevents the loss of lubricant and maintains the integrity of the bearing, ensuring consistent performance over time.

5. Environmental Adaptability:

Bearing seals provide a level of protection against external environmental conditions. Depending on the application requirements, seals can be designed to withstand specific operating environments, such as high temperatures, moisture, or chemical exposure. This adaptability enhances the suitability of bearing pulleys for a wide range of industrial applications.

6. Maintenance Considerations:

Effective sealing and proper lubrication reduce the maintenance requirements associated with bearing pulleys. Seals help keep contaminants out, reducing the need for frequent cleaning and inspection. Additionally, proper lubrication intervals and techniques ensure that the bearing pulley operates optimally, minimizing the need for premature bearing replacement or costly repairs.

In summary, bearing seals and lubrication are significant for bearing pulleys as they protect against contamination, retain lubrication, extend service life, improve performance and efficiency, adapt to different environments, and reduce maintenance needs. It is crucial to follow manufacturer guidelines for seal selection, lubrication type, and maintenance practices to maximize the benefits and ensure the long-term reliability of bearing pulleys.

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

What types of bearings are typically integrated into bearing pulleys?

Various types of bearings can be integrated into bearing pulleys, depending on the specific application and requirements. The choice of bearing type is influenced by factors such as load capacity, rotational speed, operating conditions, and cost considerations. Let’s explore some common types of bearings that are typically integrated into bearing pulleys:

1. Ball Bearings:

Ball bearings are widely used in bearing pulleys due to their versatility, high rotational speeds, and relatively low cost. They consist of steel balls housed within a ring or cage. Ball bearings provide smooth operation and can handle both radial and axial loads. They are suitable for applications with moderate loads and high-speed rotational requirements.

2. Roller Bearings:

Roller bearings, such as cylindrical roller bearings and tapered roller bearings, are commonly integrated into bearing pulleys. These bearings utilize cylindrical or tapered rolling elements to support the load. Roller bearings offer high load capacity and are suitable for applications with heavier loads and lower rotational speeds. They provide enhanced stability and can accommodate axial and radial loads.

3. Needle Bearings:

Needle bearings are used in bearing pulleys that require high load-carrying capacity in a compact design. They feature long, thin cylindrical rollers that have a larger surface area for load distribution. Needle bearings are commonly found in pulleys used in automotive applications, industrial machinery, and heavy equipment.

4. Thrust Bearings:

Thrust bearings are integrated into bearing pulleys when there is a need to withstand axial loads, such as in applications where pulleys experience significant thrust forces. These bearings are designed to handle force in one direction and are commonly used in pulleys for conveyor systems, lifting equipment, and automotive applications.

5. Self-Aligning Bearings:

Self-aligning bearings are suitable for bearing pulleys that operate under misalignment conditions. They can accommodate small misalignments between the pulley wheel and the axle or shaft. Self-aligning bearings are commonly used in pulleys subjected to vibration, thermal expansion, or other factors that cause misalignment.

6. Ceramic Bearings:

In certain specialized applications, bearing pulleys may incorporate ceramic bearings. Ceramic bearings offer advantages such as higher temperature resistance, corrosion resistance, and lower weight compared to traditional steel bearings. They are commonly used in high-speed or high-temperature applications where performance and durability are critical.

These are just a few examples of the types of bearings that are typically integrated into bearing pulleys. The specific choice of bearing type depends on the unique requirements and operating conditions of the pulley system.

What materials are commonly used in the construction of bearing pulleys?

Bearing pulleys are constructed using a variety of materials, each chosen based on factors such as strength, durability, corrosion resistance, and cost. Let’s explore some common materials that are commonly used in the construction of bearing pulleys:

1. Steel:

Steel is one of the most widely used materials in bearing pulley construction. It offers excellent strength, durability, and resistance to wear and tear. Steel pulleys are capable of withstanding heavy loads and high rotational speeds. Common types of steel used include carbon steel, stainless steel, and alloy steel.

2. Cast Iron:

Cast iron is another commonly utilized material for bearing pulleys. It provides good strength and is relatively inexpensive compared to other materials. Cast iron pulleys are often used in applications where weight and cost are important considerations. They are suitable for moderate load capacities and lower rotational speeds.

3. Aluminum:

Aluminum is a lightweight material commonly used in pulleys that require reduced weight or have lower load requirements. Aluminum pulleys offer excellent corrosion resistance and are often used in applications where weight reduction is critical, such as in aerospace or automotive industries.

4. Nylon:

Nylon is a thermoplastic material that is frequently used in pulleys, especially in applications requiring low friction and noise reduction. Nylon pulleys offer good wear resistance, self-lubricating properties, and operate quietly. They are commonly used in fitness equipment, sliding doors, and other consumer products.

5. Delrin (Acetal Resin):

Delrin, also known as acetal resin, is a high-performance thermoplastic material commonly used in bearing pulleys. It provides excellent mechanical properties, low friction, and high wear resistance. Delrin pulleys are often used in precision machinery, conveyor systems, and industrial applications.

6. Brass:

Brass is utilized in certain specialized applications where corrosion resistance and aesthetic appeal are important. Brass pulleys offer good strength, corrosion resistance, and are often used in decorative or marine applications.

These are some of the commonly used materials in the construction of bearing pulleys. The material selection depends on factors such as load capacity, rotational speed, environmental conditions, cost considerations, and specific requirements of the application.

China Good quality Durable Customized Green Size 5*20*5mm Low Noise Bearing Roller   manufacturer China Good quality Durable Customized Green Size 5*20*5mm Low Noise Bearing Roller   manufacturer
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