The Needle Roller Inner Ring IR45X50X25,5 – 45X50X25,5 – INA is a precision-engineered component designed for various industrial applications. As an integral part of the INA brand’s bearing accessories, this needle roller inner ring is essential for facilitating smooth operation in needle roller bearings. With precise dimensions of 45 mm bore diameter, 50 mm outer diameter, and a width of 25.5 mm, this component is frequently utilized in high-load scenarios across multiple sectors.
Technical specifications
| Specification | Value |
|---|---|
| Bore diameter (d) | 45 mm |
| Outer diameter (D) | 50 mm |
| Width (B) | 25.5 mm |
| Ring material | Chrome steel 100Cr6 |
| Basic dynamic load rating (C) | Not specified |
| Basic static load rating (C0) | Not specified |
| Limiting speed | Not specified |
| Reference speed | Not specified |
| Precision class | P0 / ABEC-1 |
| Internal clearance | CN (Normal) |
Technical advantages
The Needle Roller Inner Ring IR45X50X25,5 offers several technical benefits that make it suitable for demanding applications:
- Precision-machined chrome steel construction ensures excellent wear resistance and long service life.
- Standard CN radial clearance allows optimal fitting in assemblies without preload.
- Compatible with a wide range of needle roller bearings, enhancing versatility.
- Manufactured to ISO standards, ensuring compatibility with internationally recognized specifications.
- Designed for high-load applications, making it suitable for heavy-duty industrial environments.
Typical applications
This needle roller inner ring is commonly used in the following industries and machinery:
- Automotive manufacturing (transmission systems, differential assemblies)
- Industrial machinery (conveyor systems, heavy-duty presses)
- Aerospace applications (actuator mechanisms, gear assemblies)
- Construction equipment (hydraulic pumps, earth-moving machinery)
- Marine applications (propulsion systems, steering gear)
Availability and ordering
Eurobearing.eu is your specialized B2B supplier for the Needle Roller Inner Ring IR45X50X25,5 – INA, ensuring fast and reliable delivery. Code IR45X50X25,5-INA is readily available for immediate purchase. To place an order or request a quotation for bulk quantities, please add the item to your cart or contact our sales team directly.

