The IR 40X45X30 Needle Roller Inner Ring from SKF is a precision-engineered component designed for seamless integration in needle roller bearings. With its exact dimensions of 40 mm bore diameter, 45 mm outer diameter, and 30 mm width, this inner ring is ideal for applications requiring high rotational speed and load capacity. SKF’s expertise in manufacturing ensures that this needle roller inner ring delivers consistent performance in various industrial settings, including automotive, aerospace, and heavy machinery.
Technical specifications
| Specification | Value |
|---|---|
| Bore diameter (d) | 40 mm |
| Outer diameter (D) | 45 mm |
| Width (B) | 30 mm |
| Ring material | Chrome steel 100Cr6 |
| Precision class | P0 / ABEC-1 |
| Internal clearance | CN |
Technical advantages
The SKF IR 40X45X30 inner ring offers numerous technical advantages that enhance its suitability for demanding industrial applications:
- Heat-treated 100Cr6 chrome steel construction ensures rolling-contact fatigue life exceeding 107 cycles.
- Optimized for high-speed operations with a structure supporting continuous rotation.
- Standard CN radial clearance facilitates optimal performance in non-preloaded assemblies.
- Precision class P0 / ABEC-1 guarantees dimensional accuracy and reliable fit.
- Compatible with SKF’s extensive range of needle roller bearings for versatile application.
Typical applications
The IR 40X45X30 Needle Roller Inner Ring is widely used across various industries and applications, including:
- Automotive manufacturing (transmission systems, drive shafts)
- Aerospace engineering (actuators, landing gear mechanisms)
- Industrial machinery (conveyor systems, pumps)
- Textile production equipment (spinning frames, looms)
- Heavy-duty construction machinery (cranes, bulldozers)
Availability and ordering
Eurobearing.eu, as a specialized B2B supplier, ensures fast availability of the IR40X45X30-SKF inner ring. Businesses can easily add this product to their cart or request a quotation for bulk quantities, ensuring a seamless procurement process tailored to their specific needs.

