The MTB Needle Roller Inner Ring IR12X15X12,5 – 12X15X12,5 is a precise mechanical component designed for use in various industrial applications. This inner ring, with dimensions of 12 mm bore diameter, 15 mm outer diameter, and a width of 12.5 mm, serves as an essential accessory for needle roller bearings. Its construction is optimized to provide a compact and efficient solution for accommodating high radial loads, making it suitable for demanding environments where space is limited, yet performance is critical.
Technical specifications
| Specification | Value |
| Bore diameter (d) | 12 mm |
| Outer diameter (D) | 15 mm |
| Width (B) | 12.5 mm |
| Ring material | Chrome steel 100Cr6 |
| Precision class | P0 / ABEC-1 |
| Internal clearance | CN (Normal) |
Technical advantages
The MTB Needle Roller Inner Ring IR12X15X12,5 offers several notable technical benefits, including:
- Compact design allows for easy integration in space-constrained assemblies.
- Manufactured from high-strength chrome steel 100Cr6, ensuring robust performance under high load conditions.
- Precision class P0 / ABEC-1 guarantees standard dimensional accuracy for general-purpose applications.
- Standard CN internal clearance suitable for various operating conditions without the need for preload adjustments.
- Engineered for compatibility with a wide range of needle roller bearings, enhancing versatility.
Typical applications
This needle roller inner ring is employed across numerous industries and machine types, including:
- Automotive transmissions and gearboxes
- Industrial machinery such as hydraulic pumps and compressors
- Precision engineering equipment, including CNC machines and lathes
- Textile machinery, facilitating smooth and efficient operation
- Aerospace components, where precise alignment and load handling are critical
Availability and ordering
Eurobearing.eu, as a specialized B2B supplier, ensures fast availability of the IR12X15X12,5-ECO needle roller inner ring. Customers can easily add this item to their cart or request a quotation for bulk quantities directly through our platform.

