The SKF D/W R4-2Z Bearing 6.35×15.875×4 mm is a miniature deep groove ball bearing, designed for applications where space and weight are critical factors. Manufactured by SKF, a leader in bearing solutions, this bearing is compact with a bore diameter of 6.35 mm, an outer diameter of 15.875 mm, and a width of 4 mm. It is commonly used in industries that require precise mechanical components, such as robotics and medical devices. The D/W R4-2Z is engineered to support both radial and axial loads, making it versatile for various light-duty applications.
Technical specifications
| Specification | Value |
| Bore diameter (d) | 6.35 mm |
| Outer diameter (D) | 15.875 mm |
| Width (B) | 4 mm |
| Basic dynamic load rating (C) | 1.28 kN |
| Basic static load rating (C0) | 0.49 kN |
| Limiting speed | 45,000 rpm |
| Shielding | 2Z (metal shields) |
| Ring material | Chrome steel 100Cr6 |
| Factory lubrication | Grease |
| Precision class | P0 / ABEC-1 |
Technical advantages
The SKF D/W R4-2Z Bearing offers several distinct technical advantages:
- High-speed capacity with limiting speeds up to 45,000 rpm, suitable for dynamic applications.
- Constructed from 100Cr6 chrome steel, ensuring rolling-contact fatigue life exceeding 107 cycles.
- Metal 2Z shields provide effective protection against dust and moderate contamination.
- Standard P0 precision class, ensuring consistent performance in precision applications.
- Compact design with a 4 mm width, ideal for space-sensitive installations.
Typical applications
The SKF D/W R4-2Z Bearing is used across various sectors:
- Measurement and laboratory instruments, including optical encoders and electronic micrometers.
- Aeromodelling and drones, supporting brushless motors and planetary gearboxes.
- Medical devices such as dental turbines and micromotors.
- Precision robotics, used in harmonic drive reducers and cardan joints.
Availability and ordering
Eurobearing.eu is your specialized B2B supplier for the SKF D/W R4-2Z Bearing, ensuring fast availability and competitive pricing. For bulk quantities, request a quote directly through our platform. Add this bearing to your cart or contact us for more information.
