The IR 20X25X17 Needle Roller Inner Ring by SKF is a precision-engineered bearing accessory designed for demanding industrial applications. With dimensions of 20 mm bore diameter, 25 mm outer diameter, and 17 mm width, this inner ring is integral to the functionality of needle roller bearings. SKF’s IR 20X25X17 is commonly utilized in sectors requiring high rotational accuracy and durability, such as automotive transmissions and machinery assemblies.
Technical specifications
| Specification | Value |
| Bore diameter (d) | 20 mm |
| Outer diameter (D) | 25 mm |
| Width (B) | 17 mm |
| Ring material | Chrome steel |
| ISO / cross-reference equivalent code | IR 20X25X17 |
Technical advantages
The SKF IR 20X25X17 Needle Roller Inner Ring offers several technical advantages:
- Manufactured from high-grade chrome steel, ensuring a rolling-contact fatigue life exceeding 10^7 cycles.
- Precision ground for tight dimensional accuracy, facilitating smooth operation in high-speed environments.
- Standard surface finish enhances lubrication retention, reducing maintenance frequency.
- Designed to withstand operational temperatures across a wide range, ensuring versatility in various industrial contexts.
- Compatible with various needle roller assemblies, providing flexibility in design and application.
Typical applications
The IR 20X25X17 Needle Roller Inner Ring is ideal for use in:
- Automotive transmissions and engines, where precision and reliability are paramount.
- Machine tools, including lathes and milling machines requiring high rotational accuracy.
- Printing machinery, such as rotary presses, that demand consistent performance.
- Textile processing equipment, enhancing operational efficiency and longevity.
- Aerospace components, benefiting from its high load-bearing capacity and precision.
Availability and ordering
Eurobearing.eu offers the SKF IR20X25X17 for prompt delivery, ideal for businesses seeking reliable B2B sourcing. Bulk quantity requests are welcomed, with the option to add the product to your cart or request a quotation for larger orders.

