The Needle Roller Inner Ring IR20X25X16 – 20X25X16 – INA is a precision-engineered bearing accessory designed to meet the demanding requirements of industrial applications. Manufactured by INA, this inner ring has dimensions of 20 mm bore diameter, 25 mm outer diameter, and 16 mm width, making it suitable for compact installations. Typically used in conjunction with needle roller and cage assemblies, this component is essential in various mechanical systems requiring high load-bearing capacity and precise rotational motion.
Technical specifications
| Specification | Value |
|---|---|
| Bore diameter (d) | 20 mm |
| Outer diameter (D) | 25 mm |
| Width (B) | 16 mm |
| Basic dynamic load rating (C) | Not specified |
| Basic static load rating (C0) | Not specified |
| Limiting speed (rpm) | Not specified |
| Ring material | Chrome steel 100Cr6 |
| Precision class | P0 / ABEC-1 |
Technical advantages
The Needle Roller Inner Ring IR20X25X16 offers several key technical benefits for high-performance applications:
- Compact dimensions ensure compatibility with limited space installations.
- Constructed from robust 100Cr6 chrome steel for superior wear resistance and durability.
- Precision class P0 / ABEC-1 ensures consistent performance and smooth operation.
- Optimized for use with needle roller and cage assemblies, enhancing system stability.
- Maintains structural integrity under high load conditions, suitable for dynamic applications.
Typical applications
This inner ring is indispensable in several specialized industries and equipment, including:
- Automotive industry (gearboxes, camshaft assemblies)
- Aerospace equipment (actuation systems, control linkages)
- Textile machinery (spindle bearings, weaving looms)
- Industrial robotics (articulated arm joints, precision gearboxes)
- Metalworking machines (presses, milling machines)
Availability and ordering
Eurobearing.eu offers the Needle Roller Inner Ring IR20X25X16 – INA with fast availability for immediate dispatch. As a specialized B2B supplier, we cater to bulk orders and provide competitive pricing. Add this product to your cart or request a quotation today to meet your industrial component needs efficiently.

