The D/W R166-2Z Bearing 4,762X9,525 from SKF is a precision-engineered miniature deep groove ball bearing. Known for its compact dimensions, it features a bore diameter of 4.762 mm and an outer diameter of 9.525 mm, making it ideal for applications where space constraints are critical. This bearing is designed for high-speed operations and is commonly used in various industrial sectors that require reliable performance in confined spaces.
Technical specifications
| Specification | Value |
|---|---|
| Bore diameter (d) | 4.762 mm |
| Outer diameter (D) | 9.525 mm |
| Width (B) | 3.175 mm |
| Weight | 1.2 g |
| Basic dynamic load rating (C) | 0.78 kN |
| Basic static load rating (C0) | 0.29 kN |
| Limiting speed | 70,000 rpm |
| Shielding / Sealing | ZZ |
| Ring material | Stainless AISI 440 |
| Factory lubrication | Lithium grease |
| Precision class | P0 / ABEC-1 |
Technical advantages
The D/W R166-2Z Bearing offers several technical benefits that make it suitable for demanding applications:
- Capable of continuous operation up to 70,000 rpm due to its miniaturised ball geometry.
- Constructed from stainless AISI 440, providing excellent corrosion resistance.
- Standard CN radial clearance, ensuring optimal performance without preload adjustments.
- ZZ shielding for enhanced protection against dust and moderate water exposure.
- Lightweight design at just 1.2 g, facilitating integration into compact systems.
Typical applications
This bearing is suitable for a range of high-precision and small-scale applications, including:
- Measurement and laboratory instruments, such as optical encoders and electronic micrometers.
- Aeromodelling and drones, particularly in brushless motors and planetary gearboxes.
- Dental equipment, including turbines and micromotors.
- Precision robotics, like harmonic drive reducers and cardan joints.
- Medical devices, such as peristaltic pumps and lung ventilators.
Availability and ordering
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