The Needle Roller Inner Ring LR40X45X20,5 by INA is a precision-engineered bearing accessory, designed for applications requiring high load capacity and compact form factors. With dimensions of 40mm bore diameter, 45mm outer diameter, and 20.5mm width, this component is integral to the effective performance of needle roller bearings. Typically utilized in industries such as automotive, aerospace, and industrial machinery, the LR40X45X20,5 inner ring serves as a critical element in reducing friction and wear in rotational or oscillatory applications.
Technical specifications
| Specification | Value |
|---|---|
| Bore diameter (d) | 40 mm |
| Outer diameter (D) | 45 mm |
| Width (B) | 20.5 mm |
| Material | Chrome steel 100Cr6 |
| Precision class | P0 / ABEC-1 |
| Operating temperature range | -20 / +120 °C |
Technical advantages
The Needle Roller Inner Ring LR40X45X20,5 is designed to deliver substantial performance benefits in demanding applications:
- Constructed from heat-treated 100Cr6 chrome steel to ensure robust durability and resistance to wear.
- Standard P0 precision class ensures compatibility with a wide range of industrial applications.
- Wide operating temperature range from -20 to +120 °C for versatile use in varying environments.
- Optimal width of 20.5mm supports effective load distribution and minimizes radial play.
- Standardized dimensions facilitate easy integration into existing bearing assemblies.
Typical applications
The LR40X45X20,5 inner ring is commonly used in the following industries and machinery:
- Automotive engineering (transmission systems, camshaft assemblies)
- Aerospace components (flight control actuators, landing gear systems)
- Industrial automation equipment (robotic arms, CNC machines)
- Construction machinery (excavator joints, bulldozer track rollers)
Availability and ordering
Eurobearing.eu offers the Needle Roller Inner Ring LR40X45X20,5-INA with fast availability for your urgent industrial needs. As a specialized B2B supplier, we provide the option to request a quotation for bulk quantities. For streamlined procurement, add the product to your cart or contact us to discuss volume pricing.

