The IR20X25X17 is a hardened and ground inner ring designed for use with needle roller bearings that do not include an inner ring, such as those in the HK, NK, or NKI series. Its main function is to provide an optimal raceway surface when the shaft cannot be ground or heat-treated.
This inner ring allows the bearing to operate with maximum efficiency, reducing wear and improving the overall service life of the system.
Technical Specifications
| Parameter | Value |
|---|---|
| Model | IR20X25X17 |
| Type | Inner ring for needle roller bearings |
| Inner Diameter (d) | 20 mm |
| Outer Diameter (D) | 25 mm |
| Width (B) | 17 mm |
| Material | Hardened steel |
| Finish | Ground and polished surface |
| Tolerance Standards | ISO/ABEC standard |
Key Features
✔ Hardened and precision-ground surface → High wear resistance
✔ Ideal for shafts that cannot be heat-treated or ground
✔ Perfect compatibility with HK/NK/NKI needle roller bearings
✔ Simple and secure installation
✔ Stable and precise for rotating systems
Typical Applications
🔹 Needle roller bearings in industrial and mechanical applications
🔹 Gear reducers and transmission systems
🔹 Electric motors, rotating shafts, pumps
🔹 Automotive, agricultural, and earth-moving equipment
🔹 Machine tools and automation equipment
📦 Choose the IR20X25X17 inner ring to ensure reliability, precision, and long-lasting performance in your rolling systems! ⚙️




