The R 8 Bearing 12,7X28,575X6,35, SKU: R8-ECO, is a precision-engineered deep groove ball bearing, ideal for a wide range of industrial applications. This miniature deep groove ball bearing has a bore diameter of 12.7 mm, an outer diameter of 28.575 mm, and a width of 6.35 mm. Its compact size makes it an excellent choice for high-speed applications where space is at a premium, such as in small machinery and equipment. Designed for versatility and efficiency, this bearing is suitable for use in various demanding environments.
Technical specifications
| Specification | Value |
| Bore diameter (d) | 12.7 mm |
| Outer diameter (D) | 28.575 mm |
| Width (B) | 6.35 mm |
| Basic dynamic load rating (C) | 9.0 kN |
| Basic static load rating (C0) | 4.6 kN |
| Limiting speed | 34,000 rpm |
| Cage type | Pressed steel |
| Shielding/Sealing | Open |
| Ring material | Chrome steel 100Cr6 |
| Precision class | P0 / ABEC-1 |
Technical advantages
The R8-ECO bearing offers several technical advantages that make it a superior choice for industrial applications:
- Supports continuous operation at speeds up to 34,000 rpm, ensuring efficient performance in high-speed applications.
- Constructed with 100Cr6 chrome steel, providing a rolling-contact fatigue life exceeding 107 cycles.
- Standard CN radial clearance allows for straightforward integration into assemblies without the need for preload adjustments.
- High dynamic and static load capacities (9.0 kN and 4.6 kN respectively) provide robust support in demanding mechanical environments.
- Open design allows for easy lubrication, reducing maintenance time and costs.
Typical applications
R8-ECO bearings are suitable for use in a variety of industries and machines, including:
- Measurement and laboratory instruments such as optical encoders and electronic micrometers.
- Aeromodelling and drones, specifically in brushless motors and planetary gearboxes.
- Dental equipment including turbines, contra-angles, and micromotors.
- Precision robotics applications like harmonic drive reducers and cardan joints.
- Medical devices such as peristaltic pumps and microscopes.
Availability and ordering
Eurobearing.eu is a specialized B2B supplier, offering fast availability for the R8-ECO bearing. You can easily request a quote for bulk quantities or add this product to your cart for immediate purchase. Visit our website for more details.

