The MR128 Bearing 8X12X2,5* is a precision-engineered miniature deep groove ball bearing, ideal for applications demanding compact dimensions and reliable performance. With a bore diameter of 8 mm, an outer diameter of 12 mm, and a width of 2.5 mm, this component is essential for industries requiring small-scale, high-efficiency mechanical solutions. This bearing, categorized under deep groove ball bearings micro, is particularly suited for use in high-speed, low-noise applications, making it a versatile choice for various precision instruments and devices.
Technical specifications
| Specification | Value |
| Bore diameter (d) | 8 mm |
| Outer diameter (D) | 12 mm |
| Width (B) | 2.5 mm |
| Cage type | Pressed steel |
| Shielding / Sealing | Open |
| Ring material | Chrome steel 100Cr6 |
| Precision class | P0 / ABEC-1 |
| Internal clearance | CN |
Technical advantages
The MR128 Bearing 8X12X2,5* offers several technical benefits that make it an optimal choice for demanding applications:
- Compact size allows integration into space-constrained assemblies.
- Chrome steel 100Cr6 rings provide excellent wear resistance and rolling-contact fatigue life exceeding 107 cycles.
- Standard CN radial clearance is ideal for assemblies that do not require preload.
- Open design ensures minimal friction, suitable for high-speed applications.
- Precision class P0 / ABEC-1 ensures adequate precision for general-purpose use.
Typical applications
This bearing is utilized in a variety of specialized sectors, demonstrating its versatility and reliability:
- Measurement and laboratory instruments, such as optical encoders and electronic micrometers.
- Aeromodelling and drones, including brushless motors and planetary gearboxes.
- Dental equipment, like turbines, contra-angles, and micromotors.
- Precision robotics, featuring harmonic drive reducers and cardan joints.
- Medical devices, including peristaltic pumps and lung ventilators.
Availability and ordering
Eurobearing.eu is your specialized B2B supplier for the MR128-ECO code, ensuring fast availability for immediate needs. You can easily add this product to your cart or request a quotation for bulk quantities to meet your specific industrial requirements.

