The Needle Roller Inner Ring IR70X80X35 – 70X80X35-EGS, available under SKU: IR70X80X35EGS-ECO, is a precision-engineered component designed for use in demanding industrial applications. This inner ring, with a bore diameter of 70 mm, outer diameter of 80 mm, and width of 35 mm, is a critical accessory in needle roller bearing assemblies. It provides a hardened and ground raceway that enhances the performance and lifespan of needle bearings, making it suitable for applications that involve high loads and rotational speeds.
Technical specifications
| Specification | Value |
| Bore diameter (d) | 70 mm |
| Outer diameter (D) | 80 mm |
| Width (W) | 35 mm |
| Ring material | Chrome steel 100Cr6 |
| Operating temperature range | -20 / +120 °C |
Technical advantages
This Needle Roller Inner Ring offers several technical advantages that make it an excellent choice for high-performance applications:
- Manufactured from heat-treated 100Cr6 chrome steel, providing excellent rolling-contact fatigue resistance.
- Precision ground surfaces ensure optimal load distribution and reduced friction.
- Compatible with standard ISO needle roller bearings, facilitating easy integration into existing systems.
- Robust design supports high dynamic and static load capacities, essential for heavy machinery applications.
- Operates efficiently across a wide temperature range, from -20 to +120 °C, suitable for various environmental conditions.
Typical applications
The Needle Roller Inner Ring IR70X80X35 is utilized in a variety of industrial sectors and machinery, including:
- Automotive industry (transmission systems, drive shafts)
- Aerospace sector (aircraft gearboxes, flight control systems)
- Heavy machinery (construction equipment, mining machinery)
- Industrial automation (robotic arms, CNC machines)
- Textile manufacturing (spinning machinery, weaving looms)
Availability and ordering
Eurobearing.eu specializes in providing high-quality needle roller accessories like the IR70X80X35EGS-ECO with fast availability. Customers can easily add this product to their cart for immediate purchase or request a quotation for bulk quantities. Trust Eurobearing.eu for your industrial component needs.

