The MR126 2Z Bearing 6X12X4* is a precision-engineered miniature deep groove ball bearing designed for specialized industrial applications. With a bore diameter of 6 mm, an outer diameter of 12 mm, and a width of 4 mm, this bearing is ideally suited for environments requiring compact and efficient component integration. Its small dimensions make it particularly useful in high-precision machinery where space constraints are a consideration. Typically, these bearings are used in sectors such as robotics, medical devices, and precision instruments where reliable operation and minimal friction are essential.
Technical specifications
| Specification | Value |
| Bore diameter (d) | 6 mm |
| Outer diameter (D) | 12 mm |
| Width (B) | 4 mm |
| Shielding | ZZ |
| Ring material | Chrome steel 100Cr6 |
| Limiting speed | 70,000 rpm |
| Basic dynamic load rating (C) | 1.2 kN |
| Basic static load rating (C0) | 0.5 kN |
| Factory lubrication | Lithium grease |
| Precision class | P0 / ABEC-1 |
Technical advantages
The MR126 2Z Bearing 6X12X4* offers several technical benefits that enhance its performance in specialized applications:
- Capable of continuous operation up to 70,000 rpm due to its miniature ball geometry.
- Constructed with heat-treated 100Cr6 chrome steel, ensuring rolling-contact fatigue life exceeds 107 cycles.
- Standard CN radial clearance, making it suitable for assemblies without preload.
- ZZ shielding provides effective protection against contamination from dust and small particles.
- Precision class P0 / ABEC-1 ensures reliable performance in high-precision applications.
Typical applications
The MR126 2Z Bearing 6X12X4* is ideal for use in various specialized industries and machine types, including:
- Measurement and laboratory instruments (optical encoders, electronic micrometers)
- Aeromodelling and drones (brushless motors, planetary gearboxes)
- Dental equipment (turbines, contra-angles, micromotors)
- Precision robotics (harmonic drive reducers, cardan joints)
- Medical devices (peristaltic pumps, lung ventilators, microscopes)
Availability and ordering
Eurobearing.eu offers the MR1262Z-ECO with fast availability for all your industrial needs. As a specialized B2B supplier, we invite you to request a quote for bulk quantities or add the product to your cart for immediate purchase. Ensure your operations run smoothly with our reliable supply of high-precision bearings.

