IR 20X25X20 NTN 20x25x20

Applications

The IR 20X25X20 NTN inner ring is designed for use with needle roller bearings operating without an integrated inner race. It provides a hardened and precisely ground running surface when the shaft cannot be heat-treated or machined to the required tolerance. Commonly used in industrial machinery, gearboxes, pumps, power transmission systems, agricultural equipment, and high-load mechanical assemblies.

Advantages

• Hardened bearing steel construction ensures long service life and excellent wear resistance.

• Precision-ground raceway provides stable rotation and reduces frictional losses.

• Ideal for shaft reinforcement, extending bearing performance where the shaft surface is insufficient.

• Reliable in dynamic load environments, vibration, and continuous duty.

• Compatible with a wide range of standard needle roller bearings.

Product Description

The NTN IR 20X25X20 inner ring (inner diameter 20 mm, outer diameter 25 mm, width 20 mm) is engineered to function as a separate raceway surface for needle roller bearings. When a shaft lacks the necessary hardness or dimensional accuracy, this inner ring provides a stable, durable, and precisely machined running surface to maintain proper rolling contact and increase bearing longevity.

Manufactured from high-grade, hardened bearing steel, the component ensures dimensional stability under load and continuous rotation. NTN’s global quality standards make this inner ring suitable for demanding industrial and automotive environments where performance, reliability, and repeatability are critical.

This inner ring is commonly used in maintenance, machine overhaul, spare part replacements, and new production assembly.

FAQ

1. What is the purpose of the IR 20X25X20 NTN inner ring?
It provides a precise running surface for needle roller bearings when the shaft cannot be hardened or ground to tolerance.

2. What material is the inner ring made from?
High-quality hardened bearing steel with excellent wear resistance.

3. Can this ring be used with needle bearings from other brands?
Yes, it is compatible with most standard 20x25x20 needle roller bearings.

4. Is it suitable for high-speed applications?
Yes, the precision finish allows stable performance at high rotational speeds.

5. In which industries is it most commonly used?
General industry, automotive systems, gearboxes, pumps, conveyors, and heavy machinery.