INA IR 20x25x20 Inner Ring - Hardened Race for Needle Bearings

Applications

The INA IR 20x25x20 inner ring is designed for use with needle roller bearings in applications where the shaft surface cannot act as a suitable raceway. It provides a hardened, precisely ground running surface that ensures stable rolling contact, reduced friction, and extended bearing service life.

This inner ring is used across industrial machinery, drives, gearboxes, agricultural equipment, power transmission systems, motors, pumps, and conveyor mechanisms, where reliability under dynamic loads is essential.

Key Advantages

• Hardened and wear-resistant bearing steel for extended operating life.

• Precision-ground raceway ensures smooth needle roller motion.

• Ideal for shafts without hardened surfaces or where dimensional tolerance must be controlled.

• Compatible with a wide range of needle bearings, not limited to INA.

• Suitable for continuous operation in demanding industrial applications.

Technical Data

FAQ

Q1: Why use an inner ring with a needle bearing?
To provide a hardened and precisely finished raceway when the shaft surface is not suitable for direct contact with needle rollers.

Q2: Can this ring be used with non-INA bearings?
Yes. As long as the bearing dimensions match, the ring is fully compatible.

Q3: Is the ring ready for installation?
Yes - it is fully finished with a ground raceway and requires no machining.

Q4: Does it improve bearing lifespan?
Yes. By providing a stable and wear-resistant raceway, it significantly reduces roller wear and increases service life.

Q5: Can it be used in rotating shafts under load?
Yes. It is specifically designed for dynamic, load-bearing rotational applications.