China supplier High Quality Needle Bearing Coated with Plastic (ML-AT002) bearing bronze

Product Description

Product Description

1.       Item No.: as shown in the picture.
2.       Material: steel/zinc/aluminum/plastic bracket + ball bearing / needle bearing wheel
3.       For some models, the height of the roller is adjustable.
4.       Color of the wheel: red, green, white, orange, etc.
5.       Application: sliding door and window, binds, rolling shutters, furniture, conveyor belt, etc.
6.       Normal packing: poly bag + outer carton

 

 

Product Categories

 

About us

Our factory is specialized in manufacturing non-standard bearing, plastic and metal pulley, bracket pulley, roller, door and window fittings, etc.Relying on a series of advanced processing equipments, skilled workers, strict inspection system, and organized management, we are CZPT to provide good-quality products with competitive price.

Why choose us

1.Professional experience:Almost 20 years’ expenience in non-standard bearings, rollers, pulleys, and other plastic accessories for door and window.
2.Popular over the world:Over 20 market countries.
3.Advantage:Good quality with competitive price.
4.OEM offered:Technical drawings, samples or photos are needed
 

FAQ

Q: How to get a quotation and start business relationship with your company?
A: Please send us email and our sales representive will contact you as soon as we receive your email.
Q: How to receive a quotaion in the shortest time?
A: When you send us an enquiry, please try to provide more details, such as product size, photo or drawing, order quantity, etc.
Q: How to start an OEM project with your company?
A: Please send us your designed drawings or original samples so that we can offer a quotation first. If all details are confirmed, we will arrange sample production once received your deposit .
Q: What’s your MOQ?
A: The MOQ depends on the design and production processes of the products. Nomally our company MOQ is 10000pc , but it can be much more or less depending on different product types. Therefore, we recommend you to tell us your required quantity first.
Q:How long can I receive an order?
A: That depends on the specific items and your order quantity. The lead time varies from 30 to 90 days.

 

Contact us

HangZhou CZPT Pulley Manufacture Co., Ltd.

WEB: http://nbminli /
ADDRESS: No.9 CZPT Road, CZPT Industrial Zone, Xihu (West Lake) Dis. District, HangZhou, China

 
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Load Direction: Radial Bearing
Material: Bearing Steel
Ourer Ring Material: Nylon
Samples:
US$ 0.5/Piece
1 Piece(Min.Order)

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Order Sample

Customization:
Available

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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.

needle bearing

Challenges and Solutions for Needle Bearings in High-Speed Applications

Needle bearings face specific challenges when used in high-speed applications due to the unique combination of factors that affect their performance at elevated rotational speeds. However, these challenges can be effectively addressed through various design considerations and engineering solutions. Here’s a closer look:

  • Centrifugal Forces:

In high-speed applications, centrifugal forces acting on the needle rollers can cause instability and increased friction. These forces can lead to premature wear and reduced bearing life.

Solution: To counteract centrifugal forces, manufacturers design needle bearings with optimized cage designs and materials that enhance roller stability and minimize friction. This can involve using lightweight materials for cages and rollers to reduce the impact of centrifugal forces.

  • Heat Generation:

High speeds generate more heat due to friction and increased operating temperatures. Excessive heat can lead to lubricant breakdown, reduced viscosity, and potential bearing damage.

Solution: Bearing design and material selection play a crucial role in managing heat generation. Improved lubrication systems, enhanced cooling methods, and proper selection of lubricants with high-temperature stability can help dissipate heat effectively.

  • Lubrication:

High-speed applications require consistent and efficient lubrication to reduce friction and manage heat. Inadequate lubrication can lead to increased wear, increased operating temperatures, and potential bearing failure.

Solution: Manufacturers develop advanced lubrication systems and use lubricants specifically formulated for high-speed applications. Proper lubricant selection and maintenance practices, such as monitoring lubricant condition and replenishing as needed, are critical for ensuring optimal performance.

  • Cage Design:

In high-speed operations, cage design plays a crucial role in maintaining needle roller stability, preventing friction, and minimizing wear. Inadequate cage design can lead to cage distortion and roller skewing.

Solution: Advanced cage designs, often involving optimized shapes and materials, are developed to enhance roller guidance, reduce friction, and maintain proper roller alignment even at high speeds.

  • Bearing Materials:

The choice of materials is vital for high-speed needle bearings. Improper material selection can lead to increased friction, wear, and reduced fatigue life.

Solution: Manufacturers use high-performance materials that offer low friction, high fatigue resistance, and increased hardness to withstand high-speed conditions.

  • Vibration and Noise:

High-speed needle bearings can generate vibrations and noise due to dynamic forces. Excessive vibration can impact overall system performance and cause discomfort or damage.

Solution: Engineering techniques such as precision machining, balancing, and design optimization are employed to minimize vibration and noise. Additionally, advanced noise-reduction materials and coatings can be applied to components to dampen vibrations and mitigate noise.

In summary, the challenges associated with using needle bearings in high-speed applications can be effectively addressed through careful design considerations, material selection, lubrication strategies, and advanced manufacturing techniques. By implementing these solutions, manufacturers ensure that needle bearings perform optimally even at elevated rotational speeds, contributing to the efficiency and reliability of high-speed machinery and equipment.

needle bearing

Common Signs of Wear or Damage in Needle Bearings and Replacement Timing

Needle bearings, like any mechanical component, can experience wear or damage over time due to factors such as load, speed, contamination, and improper maintenance. Recognizing the signs of wear or damage in needle bearings is crucial to ensuring the continued efficiency and reliability of machinery. Here are the common signs of wear or damage and when needle bearings should be replaced:

  • Unusual Noise:

Increased noise, grinding, or rattling sounds during operation can indicate internal damage or wear in needle bearings. Unusual noise is often an early warning sign that replacement is needed.

  • Irregular Operation:

Any irregularities in the smoothness of motion, such as sticking, binding, or rough movement, can indicate that the needle bearings are no longer functioning properly.

  • Increased Friction and Heat:

If you notice higher operating temperatures or increased friction, it may suggest that the bearings are experiencing excessive wear. Elevated temperatures can lead to premature failure.

  • Visible Wear or Pitting:

Inspect the needle bearings visually for signs of wear, pitting, or corrosion on the bearing surfaces. These issues can affect the bearing’s ability to operate correctly.

  • Lubrication Issues:

Reduced lubrication can lead to increased wear and damage. If you notice inadequate lubrication or the presence of contaminants in the lubricant, it’s time to address the issue.

  • Abnormal Vibration:

If you experience unusual vibrations during operation, it could be a sign that the needle bearings are no longer providing proper support and load distribution.

  • Excessive Play or Clearance:

Excessive play or looseness in the bearing assembly can indicate that the internal components are worn out, affecting the bearing’s performance.

  • Reduced Performance:

If your machinery or equipment is not performing as expected, it could be due to deteriorating needle bearings that are no longer able to handle the required loads and speeds.

The timing for replacing needle bearings depends on factors such as the severity of wear, the application’s demands, and the manufacturer’s recommendations. In general, needle bearings should be replaced if any of the above signs are observed, as continuing to operate with damaged bearings can lead to further equipment damage, reduced efficiency, and even safety risks.

Regular maintenance, including visual inspections, proper lubrication, and adherence to manufacturer guidelines, can help extend the lifespan of needle bearings and ensure their optimal performance. When in doubt, consulting with bearing experts or manufacturers can provide guidance on when to replace needle bearings for the best results.

needle bearing

Needle Bearings: Function and Applications

Needle bearings, also known as needle roller bearings, are a type of rolling element bearing designed to accommodate high radial loads in a compact space. They consist of cylindrical rollers with a length-to-diameter ratio that is much greater than conventional roller bearings, resembling needles. Needle bearings play a vital role in various applications due to their unique design and capabilities. Here’s how needle bearings function and their diverse range of applications:

  • High Radial Load Capacity:

Needle bearings are well-suited for applications where space is limited, and high radial loads need to be accommodated. The longer rollers distribute the load over a larger contact area, allowing for higher load-carrying capacities.

  • Compact Design:

The slim and cylindrical shape of needle rollers allows for a compact and lightweight bearing design. This makes them ideal for applications with tight installation spaces or weight constraints.

  • Reduced Friction:

Due to their smaller diameter, needle rollers have a lower contact angle with the bearing raceways. This results in reduced friction and lower heat generation during operation, contributing to energy efficiency.

  • High Rigidity:

Despite their slender profile, needle bearings exhibit high rigidity and stiffness. This characteristic is advantageous in applications requiring precise positioning and minimal deflection under load.

  • Smooth Operation:

Needle bearings provide smoother rolling motion due to their smaller contact area and reduced friction. This attribute is essential for applications demanding precise and smooth motion, such as in automotive transmissions.

  • Automotive Applications:

Needle bearings are commonly used in automotive components, including transmissions, drive shafts, and constant velocity joints (CV joints). Their compact design and high load capacity make them ideal for these applications.

  • Industrial Machinery:

In industrial machinery, needle bearings find use in various applications, such as in gearboxes, textile machinery, printing presses, and agricultural equipment. They excel in situations where high load capacity is required within limited space.

  • Aerospace and Aviation:

Needle bearings are used in aerospace applications due to their lightweight design and ability to handle high loads. They are employed in components like aircraft landing gear, engine components, and control systems.

  • Medical Equipment:

The precision and compactness of needle bearings make them suitable for medical equipment such as surgical instruments, X-ray machines, and laboratory devices.

  • Robotics and Automation:

Robotic systems and automation equipment often require compact and lightweight bearings with high load-carrying capacities. Needle bearings fulfill these requirements, enabling precise movement and efficient operation.

  • Heavy-Duty Applications:

Needle bearings also find use in heavy-duty applications like construction equipment, where they handle substantial loads in challenging environments.

In summary, needle bearings function as efficient load-carrying components in applications requiring high radial load capacity, compact design, reduced friction, and precise motion. Their versatility and ability to thrive in diverse industries contribute to their widespread use in various demanding applications.

China supplier High Quality Needle Bearing Coated with Plastic (ML-AT002)   bearing bronzeChina supplier High Quality Needle Bearing Coated with Plastic (ML-AT002)   bearing bronze
editor by CX 2024-04-09

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