The Needle Roller Inner Ring IR280X305X69 is a precision-engineered component by INA, designed to meet the demanding requirements of modern industrial applications. With precise dimensions of 280x305x69 mm, this inner ring plays a critical role in ensuring smooth and efficient operation in various heavy-duty machinery. Its primary function is to serve as a hardened raceway, providing a reliable surface for needle rollers, enhancing the load distribution and extending the operational lifespan of the bearing assembly.
Technical specifications
| Specification | Value |
|---|---|
| Bore diameter (d) | 280 mm |
| Outer diameter (D) | 305 mm |
| Width (B) | 69 mm |
| Ring material | Chrome steel 100Cr6 |
| Precision class | P0 / ABEC-1 |
| Internal clearance | CN |
Technical advantages
The Needle Roller Inner Ring IR280X305X69 is designed with specific technical advantages that cater to demanding industrial environments:
- Engineered with 100Cr6 chrome steel for superior rolling-contact fatigue resistance.
- Standard CN radial clearance, ensuring optimal performance without the need for preload adjustments.
- Precision class P0 / ABEC-1, providing consistency and accuracy in high-speed operations.
- Compatible with a wide range of needle roller assemblies, enhancing versatility across applications.
- Manufactured with strict adherence to ISO standards, ensuring compatibility and interchangeability.
Typical applications
The Needle Roller Inner Ring IR280X305X69 is utilized across various industries and machine types, making it an essential component in:
- Automotive transmissions and engines
- Heavy machinery and construction equipment
- Industrial conveyor systems and material handling equipment
- Textile machinery and looms
- Agricultural machinery and implements
Availability and ordering
Eurobearing.eu is your trusted B2B supplier for the Needle Roller Inner Ring IR280X305X69. This product is available for fast delivery, ensuring minimal downtime for your operations. For bulk orders or to request a quotation, please visit our website or add this item to your cart for a seamless purchasing experience.

