The IR 20X25X30 Needle Roller Inner Ring from SKF is a precision-engineered component designed for high-performance industrial applications. This inner ring, with its compact dimensions of 20 mm bore diameter, 25 mm outer diameter, and 30 mm width, is a vital accessory in needle roller bearings. Its robust construction ensures optimal support and alignment of needle rollers, making it an essential component in machinery that demands precise rotational motion.
Technical specifications
| Specification | Value |
| Bore diameter (d) | 20 mm |
| Outer diameter (D) | 25 mm |
| Width (B) | 30 mm |
| Material | Chrome steel 100Cr6 |
| Operating temperature range | -20 / +120 °C |
| Precision class | P0 / ABEC-1 |
| Internal clearance | Standard |
| ISO / cross-reference equivalent code | IR20X25X30-SKF |
Technical advantages
The SKF IR 20X25X30 Needle Roller Inner Ring offers several technical advantages:
- Constructed from heat-treated 100Cr6 chrome steel for superior rolling-contact fatigue life, exceeding 107 cycles.
- Standard internal clearance ensures compatibility with various assembly conditions without the need for preload adjustments.
- Capable of operating efficiently within a wide temperature range from -20°C to +120°C, supporting diverse environmental conditions.
- Manufactured to precision class P0 / ABEC-1 standards, providing reliable performance in standard applications.
- Compatible with ISO standards, making it an interchangeable component for international machinery.
Typical applications
The IR 20X25X30 Needle Roller Inner Ring is suitable for use in the following sectors:
- Automotive industry (transmissions, steering mechanisms)
- Textile machinery (high-speed spindles, looms)
- Industrial automation (robotic arms, assembly line conveyors)
- Aerospace applications (actuators, stabilizers)
- Construction equipment (crane swivel joints, excavator arms)
Availability and ordering
Eurobearing.eu is your specialized B2B supplier for the SKF IR20X25X30 Needle Roller Inner Ring, offering fast availability and efficient service. For bulk quantities, please request a quote to benefit from our competitive pricing. Add to cart now or contact us for more information.

