The Needle Roller Inner Ring IR8X12X10,5 – 8X12X10,5 by MTB is a precision-engineered component designed for use in high-performance bearing assemblies. This inner ring, measuring 8 mm in bore diameter, 12 mm in outer diameter, and 10.5 mm in width, is well-suited for applications requiring compact dimensions and high load-carrying capabilities. Its robust construction makes it an ideal choice for industrial environments where reliable and consistent performance is paramount.
Technical specifications
| Specification | Value |
| Bore diameter (d) | 8 mm |
| Outer diameter (D) | 12 mm |
| Width (B) | 10.5 mm |
| Basic dynamic load rating (C) | Not specified |
| Basic static load rating (C0) | Not specified |
| Limiting speed | Not specified |
| Reference speed | Not specified |
| Ring material | Chrome steel 100Cr6 |
| Precision class | P0 |
| Internal clearance | CN |
Technical advantages
The Needle Roller Inner Ring IR8X12X10,5 – 8X12X10,5 offers several technical benefits, making it suitable for demanding industrial applications:
- Constructed from heat-treated 100Cr6 chrome steel for superior durability under stress.
- Standard CN radial clearance ensures optimal assembly without the need for preload adjustments.
- Compact dimensions allow for integration into space-constrained systems.
- Precision class P0 compliance guarantees consistent and accurate performance.
- Engineered for compatibility with a wide range of needle roller bearings, enhancing versatility in application.
Typical applications
This inner ring is optimized for use across various sectors, including:
- Automotive industry (transmissions, drive shafts, gearboxes)
- Textile machinery (weaving looms, spinning frames)
- Packaging equipment (conveyor systems, wrapping machines)
- Construction machinery (hydraulic pumps, motor drives)
- Industrial automation (robotic arms, CNC machines)
Availability and ordering
Eurobearing.eu is your go-to B2B supplier for the Needle Roller Inner Ring IR8X12X10,5-ECO. We ensure fast availability and cater to bulk order requirements. For immediate procurement, add this product to your cart or request a quotation for larger quantities.

