Recirculating ball bearings are precision linear motion components that convert rotary motion into smooth, low-friction linear movement through circulating ball bearings within a track system.
| Parameter | Typical range | Notes & selection driver |
|---|---|---|
| Accuracy | ±0.005-0.02 mm/m | |
| Noise Level | < 65 dB(A) at 1 m distance | |
| Travel Speed | Up to 5 m/s | |
| Load Capacity | Dynamic: 5-50 kN, Static: 10-100 kN | |
| Precision Grade | Normal (C), High (H), Precision (P), Ultra-precision (UP) | |
| Friction Coefficient | 0.001-0.003 | |
| Lubrication Interval | 500-2000 km travel distance | |
| Operating Temperature | -20°C to +100°C |
Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.
This component is used in the following industrial products
Precision mechanical components that provide smooth, low-friction linear motion along a fixed path.
A precision mechanical component that provides smooth, low-friction linear motion along a fixed path.
A moving component that travels along a linear rail, providing precise linear motion and load support.
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Manufacturer profiles associated with Recirculating Ball Bearings.
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Recirculating ball bearings offer significantly lower friction (coefficients 0.001-0.003 vs 0.1-0.3 for plain bearings), higher precision (±0.005 mm/m vs ±0.05 mm/m), greater load capacity (up to 100 kN static vs 20 kN), and longer service life (20,000+ km vs 5,000 km). They also provide better rigidity and positioning accuracy for precision applications.
Lubrication intervals depend on operating conditions: typically every 500-2,000 km of travel or 3-12 months. High-speed, high-load, or contaminated environments require more frequent lubrication (every 200-500 km). Use manufacturer-recommended lithium soap-based greases (NLGI grade 2) or synthetic oils with EP additives.
Yes, they can handle moment loads through multiple bearing arrangements. Standard configurations support moment capacities of 100-1,000 Nm depending on size and preload. For high moment applications, use wider bearing blocks or multiple parallel rails with proper alignment to distribute loads.
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