The Needle Roller Inner Ring IR340X370X80, SKU: IR340X370X80-ECO, is an essential component in the category of bearing accessories. With precise dimensions of 340 mm bore diameter, 370 mm outer diameter, and 80 mm width, this inner ring is specifically designed for use in high-performance needle roller bearings. Its robust construction makes it suitable for demanding industrial applications, providing the necessary support and accuracy for various mechanical assemblies. This inner ring is commonly utilized in heavy machinery and automotive industries, where precise alignment and load distribution are critical.
Technical specifications
| Specification | Value |
|---|---|
| Bore diameter (d) | 340 mm |
| Outer diameter (D) | 370 mm |
| Width (B) | 80 mm |
| Ring material | Chrome steel 100Cr6 |
| Precision class | P0 / ABEC-1 |
| Internal clearance | CN |
| Operating temperature range | -20 / +120 °C |
Technical advantages
The Needle Roller Inner Ring IR340X370X80 offers several technical advantages that enhance its functionality and application versatility:
- Precision manufacturing ensures seamless integration with needle roller bearings, reducing friction and wear.
- Heat-treated chrome steel 100Cr6, enhancing fatigue life under high-stress conditions.
- Standard CN radial clearance optimizes performance in assemblies without preload.
- Capable of withstanding operating temperatures ranging from -20 to +120 °C, suitable for harsh environments.
- Designed to facilitate smooth rotational motion, critical for maintaining system efficiency.
Typical applications
This inner ring is suitable for a wide range of industrial applications, including:
- Automotive industry (gearboxes, differentials, transmissions)
- Heavy machinery (cranes, excavators, loaders)
- Textile production equipment (spinning machines, looms)
- Railway systems (bogies, traction motors)
- Printing machines (rollers, guides)
Availability and ordering
Eurobearing.eu is a specialized B2B supplier of the Needle Roller Inner Ring IR340X370X80 – 340X370X80, SKU: IR340X370X80-ECO. We offer fast availability for this product, and you can conveniently request a quote for bulk quantities. Visit our website to add this product to your cart or request a quotation.

