The outer surface of the outer ring of the alignment needle roller bearing is a convex spherical design. Two polymer material seat rings with concave spherical surfaces are embedded in stamped steel mounting sleeves and mounted together on the outer ring of the bearing. QIBR provides alignment needle roller bearings with or without inner rings.
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Showing 1 - 8 of 8 Products
| No. | Product | Product model | Inner envelope circle | Outer diameter | Weight | Limiting speed | Total width |
|---|---|---|---|---|---|---|---|
| 1 | | RPNA 15/28 | 15 mm | 28 mm | 0.032 kg | 28000 rpm | 12 mm |
| 2 | | RPNA 18/32 | 18 mm | 32 mm | 0.052 kg | 24000 rpm | 16 mm |
| 3 | | RPNA 20/35 | 20 mm | 35 mm | 0.062 kg | 22000 rpm | 16 mm |
| 4 | | RPNA 25/42 | 25 mm | 42 mm | 0.11 kg | 18000 rpm | 20 mm |
| 5 | | RPNA 30/47 | 30 mm | 47 mm | 0.13 kg | 15000 rpm | 20 mm |
| 6 | | RPNA 35/52 | 35 mm | 52 mm | 0.13 kg | 13000 rpm | 20 mm |
| 7 | | RPNA 40/55 | 40 mm | 55 mm | 0.14 kg | 11000 rpm | 20 mm |
| 8 | | RPNA 45/62 | 45 mm | 62 mm | 0.18 kg | 10000 rpm | 20 mm |
QIBR alignment needle roller bearings without an inner ring address several critical issues in diverse fields, mainly in the following areas:
1. Compact structure
Using needle rollers as rolling elements allows these bearings to handle large radial loads while being relatively small in size, making them suitable for installation in limited spaces, particularly in compact mechanical designs.
2. Low friction and high efficiency
Thanks to the precise design between the needle rollers and the cage, these bearings exhibit low friction losses, reducing heat generation and improving operational efficiency. This makes them suitable for high-speed and high-efficiency environments.
3. High durability
The cage stabilizes the position of the needle rollers, reducing contact and wear among them, thereby extending the bearing's lifespan. Proper clearance and precision design ensure stability and reliability during operation.
4. Low noise and vibration
The rational structure between the needle rollers and the cage minimizes contact among the rollers, reducing noise and vibration, and making them ideal for environments requiring low noise levels.
5. Adaptability to high-speed applications
With small needle roller shapes and reduced contact area, these bearings are well-suited for high-speed applications, effectively preventing excessive friction and overheating at high speeds.
1. Improved materials
High-performance material selection: Using materials with greater hardness, wear resistance, and corrosion resistance can significantly enhance bearing durability and stability.
2. Optimized cage design
Structural optimization: Enhancing the cage structure to achieve better needle roller arrangement and uniform load distribution. Optimizing the cage reduces needle roller collisions, improving operational stability and efficiency.
Reduced contact area: By refining the cage geometry and needle roller arrangement, contact areas among rollers are minimized, reducing friction and wear.
3. Enhanced lubrication performance
Efficient lubricants: Employing greases or oils suited for high-temperature and high-pressure environments ensures consistent lubricant performance during extended operations, reducing friction and improving durability.
4. Increased precision
Precision machining: Enhancing manufacturing accuracy minimizes errors between bearing components, ensuring more uniform and stable contact between needle rollers and the cage. This improves performance, extends lifespan, and reduces noise and vibration.
1. Engines
Commonly used in engine components such as valve mechanisms, turbochargers, camshafts, and balance shafts, these bearings can withstand high loads while maintaining stable operation.
2. Agricultural machinery
Tillage and seeding equipment: Used in agricultural machinery to adapt to variable loads and angle deviations in soil, helping equipment maintain long-term stable operation.
Tractors and harvesters: Frequently used in transmission systems, lifting devices, and driving components in tractors and harvesters.
3. Mining and construction machinery
Excavators and cranes: These machines often encounter significant impact loads and angular misalignments. Self-aligning needle roller bearings effectively mitigate installation errors and ensure normal equipment operation.
Mining equipment: Widely used in heavy-vibration, high-load equipment such as crushers and screeners during mining operations.
4. Industrial transmission equipment
Gearboxes: In gearboxes and transmission devices, these bearings handle uneven loads caused by angular errors during transmission.
Chain and belt drive systems: Suitable for industrial production transmission devices, providing efficient power transmission.
