The IR 170X185X45 Needle Roller Inner Ring from SKF is a precision-engineered component designed for specific industrial applications. As a critical piece in the category of bearing accessories, this inner ring has a bore diameter of 170 mm, an outer diameter of 185 mm, and a width of 45 mm. Typically utilized in high-load environments, it is indispensable in the assembly of needle roller bearings where space-efficient solutions are required. The SKF IR 170X185X45 is known for its ability to support radial loads in compact settings.
Technical specifications
| Specification | Value |
| Bore diameter (d) | 170 mm |
| Outer diameter (D) | 185 mm |
| Width (B) | 45 mm |
| Weight | 2.1 kg |
| Basic dynamic load rating (C) | 145 kN |
| Basic static load rating (C0) | 260 kN |
| Limiting speed | 3,300 rpm |
| Cage type | Pressed steel |
| Ring material | Chrome steel 100Cr6 |
| Precision class | P0 / ABEC-1 |
Technical advantages
The SKF IR 170X185X45 Needle Roller Inner Ring offers several distinct technical benefits:
- Constructed with chrome steel 100Cr6, providing a rolling-contact fatigue life exceeding 107 cycles.
- Pressed steel cage ensures robust performance under high radial loads.
- Standard P0 precision class, suitable for general-purpose applications.
- Optimal for high-speed operations up to 3,300 rpm.
- Designed for environments where space-saving is crucial, without compromising load capacity.
Typical applications
The SKF IR 170X185X45 is ideally suited for various industrial sectors, including:
- Automotive manufacturing (gearboxes, transmission systems)
- Textile machinery (spinning and weaving machines)
- Printing presses (rollers and drum assemblies)
- Construction equipment (cranes and hoists)
- Mining and quarrying (conveyor systems, crushers)
Availability and ordering
Eurobearing.eu is your trusted B2B supplier for the SKF IR170X185X45 Needle Roller Inner Ring. Enjoy fast availability and the option to request a quote for bulk orders. Add this essential component to your cart or contact us for a detailed quotation today.

