The Needle Roller Inner Ring IR40X45X20,5 by MTB is a precision-engineered component designed for high-performance applications. With dimensions of 40x45x20.5 mm, this needle roller inner ring is a fundamental part of bearing assemblies, enhancing the load-carrying capacity and extending the functionality of needle roller bearings. Typically used in industrial machinery where space-saving designs and high load capacities are crucial, this component is a staple in sectors requiring reliable motion mechanisms.
Technical specifications
| Specification | Value |
| Bore diameter (d) | 40 mm |
| Outer diameter (D) | 45 mm |
| Width (B) | 20.5 mm |
| Ring material | Chrome steel 100Cr6 |
| Basic dynamic load rating (C) | Not specified |
| Basic static load rating (C0) | Not specified |
| Precision class | P0 / ABEC-1 |
| ISO / cross-reference equivalent code | Not specified |
Technical advantages
The Needle Roller Inner Ring IR40X45X20,5 offers several concrete technical benefits that make it ideal for demanding industrial environments:
- Manufactured from heat-treated 100Cr6 chrome steel, ensuring a rolling-contact fatigue life exceeding 107 cycles.
- Standard CN radial clearance, suitable for assemblies without preload, enhancing ease of integration.
- Compact design allows for space-efficient assembly in constrained environments.
- Compatible with a wide range of needle roller bearings, facilitating versatile application use.
- Precision class P0 / ABEC-1 ensures consistent performance in standard applications.
Typical applications
The Needle Roller Inner Ring IR40X45X20,5 is utilized across various industries, particularly where precise motion control is required:
- Automotive manufacturing (transmission systems, differential assemblies)
- Heavy machinery (excavators, bulldozers, cranes)
- Textile machinery (weaving looms, knitting machines)
- Packaging equipment (conveyors, rotary fillers)
- Printing machines (offset printers, rotary presses)
Availability and ordering
Eurobearing.eu, a specialized B2B supplier, offers fast availability of the Needle Roller Inner Ring IR40X45X20,5 with SKU IR40X45X20,5-ECO. Businesses interested in bulk purchases can easily request a quote. For immediate needs, add this component to your cart and proceed to checkout.

