The Needle Roller Inner Ring IR20X25X26,5 – 20X25X26,5 – INA is a precision-engineered component designed for use in needle roller bearing assemblies. Manufactured by INA, this inner ring features a bore diameter of 20 mm, an outer diameter of 25 mm, and a width of 26.5 mm. It is commonly employed in applications where compact bearing arrangements are required, including automotive transmissions and industrial machinery. Its design allows for high load-carrying capacity in limited spaces, making it ideal for demanding environments.
Technical specifications
| Specification | Value |
|---|---|
| Bore diameter (d) | 20 mm |
| Outer diameter (D) | 25 mm |
| Width (B) | 26.5 mm |
| Basic dynamic load rating (C) | Available upon request |
| Basic static load rating (C0) | Available upon request |
| Limiting speed | Available upon request |
| Reference speed | Available upon request |
| Ring material | Chrome steel 100Cr6 |
| Precision class | P0 / ABEC-1 |
| ISO / cross-reference equivalent code | Available upon request |
Technical advantages
This needle roller inner ring offers several technical benefits that enhance its performance in industrial settings:
- Manufactured from 100Cr6 chrome steel, ensuring high resistance to rolling-contact fatigue.
- Precision class P0 / ABEC-1, suitable for general industrial applications.
- Compact dimensions (20x25x26.5 mm) allow for space-efficient designs in confined environments.
- Compatible with standard needle roller bearings, facilitating easy integration into existing systems.
- Available load ratings and speeds on request, enabling tailored solutions for specific applications.
Typical applications
The Needle Roller Inner Ring IR20X25X26,5 – 20X25X26,5 – INA is utilized across a variety of industries and machinery, including:
- Automotive transmissions (gearbearing assemblies, differential units)
- Industrial machinery (printing presses, conveyor systems)
- Aerospace components (actuator systems, landing gear)
- Construction equipment (crane hoists, earthmoving machinery)
- Textile machinery (spinning frames, weaving looms)
Availability and ordering
Eurobearing.eu is your trusted B2B supplier for needle roller inner rings, including the IR20X25X26,5-INA. We ensure fast availability with options to request a quote for bulk purchases. Explore our catalog to add this item to your cart or reach out to us for a quotation tailored to your needs.

