The IR 75X85X54 Needle Roller Inner Ring from SKF is a precision-engineered component designed for high-performance industrial applications. This inner ring is a crucial accessory in needle roller bearings, providing a smooth and stable surface for the rollers to operate efficiently. With dimensions of 75 mm inner diameter, 85 mm outer diameter, and 54 mm width, this component is essential for systems requiring precise alignment and load distribution. SKF’s expertise in manufacturing ensures compatibility with various bearing assemblies, making it a reliable choice for industries that demand stringent performance standards.
Technical specifications
| Specification | Value |
| Bore diameter (d) | 75 mm |
| Outer diameter (D) | 85 mm |
| Width (B) | 54 mm |
| Ring material | Chrome steel 100Cr6 |
| Basic dynamic load rating (C) | Not specified |
| Basic static load rating (C0) | Not specified |
| Limiting speed | Not specified |
| Operating temperature range | -20 / +120 °C |
| Precision class | P0 / ABEC-1 |
| Internal clearance | CN |
Technical advantages
The IR 75X85X54 Needle Roller Inner Ring offers several technical benefits that enhance its performance in demanding applications:
- Crafted from heat-treated 100Cr6 chrome steel, ensuring a rolling-contact fatigue life exceeding 107 cycles.
- Standard CN radial clearance, suitable for assemblies that do not require preloading.
- Operational temperature range from -20 to +120 °C, accommodating a wide range of environmental conditions.
- Precision class P0 / ABEC-1, meeting the basic accuracy requirements for general applications.
- Robust design for integration with needle roller bearings, optimizing load capacity and reducing wear.
Typical applications
The IR 75X85X54 Needle Roller Inner Ring is utilized across various sectors and machinery types:
- Automotive manufacturing (transmissions, differential systems)
- Railway engineering (axle boxes, bogie assemblies)
- Aerospace industry (jet engine components, landing gears)
- Industrial machinery (textile machines, paper processing equipment)
- Wind energy (turbine generators, gearboxes)
Availability and ordering
Eurobearing.eu is your specialized B2B supplier for mechanical industrial components, including the IR75X85X54-SKF. With fast availability and the option to request a quote for bulk quantities, we ensure you have the components you need when you need them. Add this item to your cart or contact us for a quotation today.

