The Needle Roller Inner Ring IR20X25X38,5-S1 – 20X25X38,5 – INA offers precision engineering for high-performance applications. Manufactured by INA, a leading brand in bearing technology, this inner ring is specifically designed for needle roller bearings. With precise dimensions of 20 mm bore diameter, 25 mm outer diameter, and 38.5 mm width, it is ideal for use in constrained spaces where axial movement is restricted, and radial load capacity is critical.
Technical specifications
| Specification | Value |
| Bore diameter (d) | 20 mm |
| Outer diameter (D) | 25 mm |
| Width (B) | 38.5 mm |
| Ring material | Chrome steel 100Cr6 |
| Precision class | P0 / ABEC-1 |
| ISO / cross-reference equivalent code | IR20X25X38,5-S1 |
Technical advantages
The Needle Roller Inner Ring IR20X25X38,5-S1 provides several technical advantages that enhance its functionality in various industrial settings:
- Heat-treated chrome steel construction for enhanced fatigue life, supporting over 10^7 cycles.
- Precision P0 class ensures reliable performance in applications requiring standard accuracy.
- Compact dimensions facilitate installation in tight spaces without compromising load capacity.
- Compatible with a wide range of needle roller bearings, enhancing versatility in assembly designs.
- Standardized ISO dimensions ensure seamless integration with existing setups.
Typical applications
This needle roller inner ring is suitable for a wide range of specific applications, including:
- Automotive transmissions (gearboxes, differential assemblies)
- Industrial machinery (conveyors, textile machines)
- Hydraulic pumps and motors (axial piston pumps, radial piston motors)
- Aerospace components (actuators, flight control systems)
- Printing equipment (rollers, paper feed systems)
Availability and ordering
Eurobearing.eu is your specialized B2B supplier for the Needle Roller Inner Ring IR20X25X38,5-S1 – INA, ensuring fast availability and delivery. For bulk quantities, you can conveniently request a quote to meet your precise needs. Add this product to your cart or request a quotation today to secure high-performance components for your industrial applications.

