Product Description
Needle bearings are sophisticated roller bearings featuring cylindrical rollers that are thin and elongated relative to their diameter, known as needle rollers. Despite their reduced cross-section, these bearings boast an impressive load-bearing capacity. Engineered with slim, extended rollers (roller diameter D≤5mm, L/D≥2.5, where L is the roller length), the radial structure remains compact. When comparing inner diameter size and load capacity to other bearing types, needle roller bearings possess the smallest outer diameter, making them ideal for support structures with limited radial installation dimensions.
Allfine offers an extensive selection of needle roller bearings, including:NK series: NK5/10, NK12/16, NK20/20, etc.NA series: NA4900, NA6901, etc.
RNA series: RNA4901, RNA6910, etc.
NKI series: NKI10/16, NKI25/30, etc.
K series: K5x8x8TN, K32x37x13, etc.
AXK series: AXK0619, AXK1226, etc.
ZheJiang CHINAMFG Bearings factory is a pioneering technology-based enterprise. Our bearing series are meticulously designed to perform in specialized environments, including those with corrosion, high temperature, low temperature, clean, non-dust, and other distinct conditions.
CHINAMFG brand bearings find extensive applications across various industries, such as electronics, household appliances, precision motors, chemical machinery, food machinery, aerospace, automobile manufacturing, medicine and biology, marine navigation, industrial robots, metallurgy, petroleum, and many more fields.
Besides producing needle roller bearings, our factory manufactures a myriad of other bearing types, including deep groove ball bearings, tapered roller bearings, spherical roller bearings, cylindrical roller bearings, self-aligning ball bearings, thrust ball/roller bearings, pillow block bearings, insert bearings, square bore agricultural bearings, clutch bearings, linear bearings, radial spherical plain bearings, automotive bearings, and more.
ZheJiang CHINAMFG Auto Parts Co., Ltd is a premier precision bearing manufacturer that integrates R&D, production, and sales. With over 3 decades of bearing production expertise, we stand as a leader in the industry.
Our facility spans 10,000 square meters, equipped with 17 state-of-the-art bearing production lines, yielding an impressive annual output exceeding 300 million sets.
ZheJiang CHINAMFG Auto Parts Co., Ltd supplies bearings to customers in over 26 countries and regions, including some of the top 5 companies in the bearing sector within their local markets.
We have proudly achieved ISO9001:2000 International Quality Management System certification, SGS certification, and have been awarded the Certificate of Import & Export by our government.
Our packaging options include:
Industrial package + outer carton + pallets.
Single box + outer carton + pallets.
Tube package + middle box + outer carton + pallets.
Customized packaging according to your requirements.
Q: Could you supply samples for free?
A: Yes, we provide free samples.
1) Sample quantity: 1-10 pieces available.
2) Free samples: Availability depends on the model number and quantity. Some bearing samples may require the client to cover shipping costs.
Q: Could you accept OEM and customization?
A: Yes, we can accommodate customized logos or drawings.
Our OEM policy includes:
1) Printing your brand on the bearing.
2). We offer fully customizable packaging solutions, catering to your specific design preferences. Options include plastic bags, individual boxes, and outer cartons.
3). All intellectual property rights remain with our clients. We guarantee absolute confidentiality and non-disclosure of any information.
Q: What is your company’s Minimum Order Quantity (MOQ)?
A: Our MOQ is just 1 piece, ensuring flexibility for all orders.
Q: Is your company a factory or a trading company?
A: We are a full-fledged factory, boasting a 4000+ square meter workshop. We warmly invite you to visit us anytime, by any means of your choice.
Q: What quality guarantee do you provide for your bearings?
A: 1) We ensure a ZERO defect rate for new goods received. 2) Normal industrial bearings like ball bearings have a service life of 2 years. Automotive bearings have a minimum service life of 5,000 KM. For detailed quality guarantees of specific bearing models, please contact our sales team.
Q: What is your delivery time?
A: Our delivery time ranges from 7-15 days, primarily depending on your order quantity.
Q: How can we contact you quickly?
A: Send us an inquiry or message, or provide your contact details such as your WhatsApp number. We’ll respond within 12 hours with the detailed information you need.
Extra Support:
We offer a comprehensive catalog and data on all types of bearings. Just provide us with your item number, and within 12 hours, we’ll deliver detailed pricing and quality information.
We meet your requirements across various aspects, including bearing materials, precision ratings, seal types, OEM services, and more.
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How does the choice of cam rollers affect the overall performance and reliability of tracking systems?
The choice of cam rollers plays a crucial role in determining the overall performance and reliability of tracking systems. Different factors associated with cam rollers can significantly impact the system’s functionality, efficiency, and longevity. Here’s a detailed explanation of how the choice of cam rollers affects the overall performance and reliability of tracking systems:
- Load Capacity: The load capacity of cam rollers is a critical consideration. Choosing cam rollers with an appropriate load capacity ensures that the tracking system can handle the required weight and forces without compromising performance or risking component failure. Selecting cam rollers with inadequate load capacity may lead to premature wear, excessive friction, or system instability, affecting the overall reliability and performance.
- Roller Material and Durability: Cam rollers are available in various materials, such as steel, stainless steel, or plastic. The choice of material impacts the durability, resistance to wear, and overall lifespan of cam rollers. In harsh or corrosive environments, selecting corrosion-resistant materials can enhance the reliability and longevity of the tracking system. Evaluating the operating conditions and selecting cam rollers with appropriate material properties is essential for ensuring long-term performance.
- Lubrication Requirements: Proper lubrication is crucial for the smooth operation and longevity of cam rollers. Different types of cam rollers have varying lubrication requirements, ranging from self-lubricating options to those that require regular maintenance. Consider the lubrication demands of cam rollers and ensure that they align with the operational needs and maintenance capabilities of the tracking system. Adequate lubrication reduces friction, minimizes wear, and enhances the overall reliability of the system.
- Accuracy and Precision: The choice of cam rollers can affect the accuracy and precision of the tracking system. Cam rollers with high-quality manufacturing and precision engineering contribute to smoother and more consistent motion. They provide better control over acceleration, deceleration, and dwell periods, resulting in improved tracking accuracy. Selecting cam rollers with the appropriate design and manufacturing tolerances ensures the desired level of precision in tracking applications.
- Environmental Compatibility: Different tracking systems operate in various environmental conditions, including temperature extremes, dust, moisture, or contaminants. The choice of cam rollers should consider the compatibility with the specific environment in which the tracking system will be utilized. Opting for cam rollers designed to withstand environmental factors enhances the reliability and performance of the system, preventing premature wear or damage due to environmental stressors.
- Track Configuration: Cam rollers are available in various configurations to accommodate different track types, such as linear tracks, curved tracks, or complex multi-axis tracks. Choosing cam rollers that align with the track configuration required by the application ensures optimal performance and reliability. The compatibility between the cam rollers and the track configuration affects the system’s ability to handle the desired motion patterns, trajectories, and load distribution effectively.
- Compatibility with Object Characteristics: Cam rollers should be selected based on the characteristics of the objects or components being tracked. Consider factors such as shape, size, weight, and surface properties of the objects. Choosing cam rollers that are compatible with the specific object characteristics ensures proper alignment, secure tracking, and reliable performance. Incorrect sizing or mismatched specifications may lead to tracking errors, poor contact, or even damage to the objects being tracked.
- Manufacturing Quality and Standards: The overall performance and reliability of cam rollers depend on the manufacturing quality and adherence to industry standards. Choosing cam rollers from reputable manufacturers known for their quality control processes and compliance with relevant standards ensures reliable and consistent performance. High-quality cam rollers are less prone to premature wear, misalignment, or unexpected failures, resulting in improved reliability and overall system performance.
Considering these factors and making an informed choice regarding cam rollers is essential for optimizing the performance, efficiency, and reliability of tracking systems. Thoroughly evaluating the application requirements, environmental conditions, and operational needs will help select cam rollers that are best suited for the specific tracking system, leading to enhanced performance and increased reliability.

Can you explain the impact of cam rollers on the overall efficiency of tracking systems?
Cam rollers play a crucial role in the overall efficiency of tracking systems. These systems rely on the precise and controlled movement of components or objects along a predetermined path, and cam rollers contribute to achieving accurate tracking, smooth motion, and reliable operation. Here’s a detailed explanation of the impact of cam rollers on the overall efficiency of tracking systems:
- Precision Tracking: Cam rollers are designed to follow a specific cam profile or track, which allows for precise tracking of objects or components. The shape and contour of the cam determine the desired motion, and the cam rollers ensure that the objects or components move along the track with high accuracy and repeatability. This precise tracking capability enhances the overall efficiency of tracking systems by ensuring that the intended path is followed consistently.
- Smooth Motion: Cam rollers are engineered to provide smooth rolling motion along the cam profile or track. The rolling elements of the cam rollers, such as bearings or rollers, minimize friction and enable the objects or components to glide smoothly along the track. This smooth motion reduces energy consumption, minimizes wear and tear, and enhances the overall efficiency of the tracking system by facilitating seamless movement without jerks or disruptions.
- Reduced Wear: By distributing the load evenly and providing a rolling contact, cam rollers help reduce wear on both the rollers themselves and the track they follow. The rolling action minimizes frictional forces and wear compared to sliding or dragging mechanisms. This reduced wear extends the lifespan of the cam rollers and the tracking system components, ensuring long-term efficiency and reliability.
- High-Speed Capability: Cam rollers are designed to operate at high speeds without compromising performance. The choice of materials, lubrication, and design factors such as stability and balance enable cam rollers to handle rapid motion and high-speed tracking requirements. Their ability to maintain accurate tracking and smooth motion even at high speeds enhances the overall efficiency of tracking systems in applications where speed is crucial.
- Load Capacity: Cam rollers are engineered to handle varying load capacities based on their design and construction. They can support significant loads while maintaining precise tracking and smooth motion. This load-carrying capability ensures that tracking systems can accommodate different objects or components of varying weights, contributing to the overall efficiency of the system by enabling versatile and reliable operation.
- Reliability and Durability: Cam rollers are typically designed for robustness and durability. They are built to withstand the demands of continuous operation, heavy loads, and challenging environmental conditions. The use of high-quality materials, proper lubrication, and appropriate maintenance practices ensure the reliability and longevity of cam rollers, minimizing downtime and maximizing the overall efficiency of tracking systems.
In summary, cam rollers have a significant impact on the overall efficiency of tracking systems. Their precision tracking, smooth motion, reduced wear, high-speed capability, load capacity, reliability, and durability contribute to the efficient and reliable operation of tracking systems in various applications. By incorporating well-designed and properly maintained cam rollers, tracking systems can achieve optimal performance, accuracy, and productivity.

Can you describe the factors to consider when selecting cam rollers for specific applications?
When selecting cam rollers for specific applications, several factors need to be considered to ensure optimal performance, reliability, and longevity. The suitability of a cam roller for a particular application depends on various parameters and requirements. Here’s a detailed explanation of the factors to consider when selecting cam rollers:
- Load Capacity: One of the primary considerations is the anticipated load capacity of the cam roller. The cam roller should have sufficient load-carrying capacity to support the expected radial and axial loads in the application. It is important to consider both static and dynamic loads, as well as any potential shock or impact loads that may occur.
- Speed and Acceleration: The speed at which the cam roller will operate, as well as the acceleration and deceleration rates, should be taken into account. High-speed applications require cam rollers that can accommodate the associated centrifugal forces and provide smooth rolling motion without excessive heat generation. Additionally, the roller should be able to handle the acceleration and deceleration forces without compromising performance.
- Precision Requirements: Depending on the application, precision requirements may vary. Some applications demand high positioning accuracy and minimal deviation, while others may have looser tolerances. It is important to select a cam roller that can meet the desired precision requirements, ensuring accurate tracking and motion control.
- Operating Conditions: Consider the operating conditions in which the cam roller will be used. Factors such as temperature, humidity, dust, and corrosive environments can impact the performance and longevity of the cam roller. Choose a cam roller that is designed to withstand the specific operating conditions of the application, ensuring durability and reliability.
- Lubrication and Maintenance: Proper lubrication is crucial for the smooth operation and longevity of cam rollers. Consider the lubrication requirements of the cam roller and whether it has provisions for effective lubrication. Additionally, assess the maintenance needs and accessibility of the cam roller for periodic inspection, lubrication replenishment, and potential replacement.
- Mounting and Attachment: Evaluate the mounting and attachment options available for the cam roller. Different applications may require stud-type cam rollers or yoke-type cam rollers, depending on the attachment method and space constraints. Ensure that the chosen cam roller can be securely mounted and aligned with the moving parts of the system.
- Cost and Availability: Finally, consider the cost and availability of the cam roller. Evaluate the overall cost-effectiveness of the selected cam roller, taking into account its performance, longevity, and maintenance requirements. Additionally, ensure that the chosen cam roller is readily available from reliable suppliers to avoid delays or compatibility issues.
By considering these factors, you can select the most suitable cam roller for a specific application, ensuring optimal performance, reliability, and longevity. It is advisable to consult with manufacturers or industry experts to obtain guidance and recommendations tailored to your specific requirements.
In summary, the factors to consider when selecting cam rollers for specific applications include load capacity, speed and acceleration requirements, precision needs, operating conditions, lubrication and maintenance considerations, mounting and attachment options, as well as cost and availability. Assessing these factors will help in choosing the appropriate cam roller that meets the unique demands of the application.
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editor by Dream 2024-10-18