The SKF IR 40X45X20.5 Needle Roller Inner Ring is a precision-engineered component designed for use in a variety of industrial applications. As a key accessory in the bearing category, this inner ring facilitates the smooth operation of needle roller bearings by providing a hardened and ground raceway. With dimensions of 40 mm bore diameter, 45 mm outer diameter, and 20.5 mm width, it is ideal for compact assemblies where space constraints are a consideration. This component is commonly employed in applications requiring high load capacity and compact design.
Technical specifications
| Specification | Value |
|---|---|
| Bore diameter (d) | 40 mm |
| Outer diameter (D) | 45 mm |
| Width (B) | 20.5 mm |
| Basic dynamic load rating (C) | — |
| Basic static load rating (C0) | — |
| Limiting speed | — |
| Reference speed | — |
| Ring material | Chrome steel 100Cr6 |
| Precision class | P0 / ABEC-1 |
| Internal clearance | CN |
Technical advantages
The SKF IR 40X45X20.5 Needle Roller Inner Ring offers several technical advantages that enhance its functionality in demanding industrial environments:
- Manufactured from high-grade chrome steel 100Cr6, ensuring rolling-contact fatigue life exceeding 107 cycles.
- Precision class P0 / ABEC-1 provides standard accuracy for general-purpose applications.
- Internal CN clearance allows easy integration into assemblies without the need for preload adjustments.
- Heat-treated surface increases wear resistance, enhancing performance in high-load conditions.
- Compatible with SKF needle roller bearings, enabling seamless system integration.
Typical applications
The SKF IR 40X45X20.5 Needle Roller Inner Ring is suitable for a variety of specialized industries and machinery:
- Textile machinery (looms, knitting machines)
- Automotive industry (transmissions, differentials)
- Packaging equipment (rollers, conveyor systems)
- Industrial robotics (articulated arms, linear actuators)
- Hydraulic systems (pumps, motors)
Availability and ordering
Eurobearing.eu is your specialized B2B supplier for mechanical industrial components, offering fast availability of the SKF IR40X45X205-SKF needle roller inner ring. For bulk orders or specific inquiries, feel free to request a quotation. Add to cart now to secure your components quickly and efficiently.

