The Needle Roller Inner Ring IR30X35X20,5 – 30X35X20,5 – INA is an essential component in the realm of bearing accessories, specifically within the category of needle roller inner rings. Manufactured by INA, this component is designed with precision to fit a bore diameter of 30 mm, an outer diameter of 35 mm, and a width of 20.5 mm. Its compact yet robust configuration makes it suitable for high-load applications in various industrial settings, where precision and reliability are paramount.
Technical specifications
| Specification | Value |
|---|---|
| Bore diameter (d) | 30 mm |
| Outer diameter (D) | 35 mm |
| Width (B) | 20.5 mm |
| Ring material | Chrome steel 100Cr6 |
| Basic dynamic load rating (C) | 12.8 kN |
| Basic static load rating (C0) | 18.6 kN |
| Limiting speed | 16,000 rpm |
| Precision class | P0 / ABEC-1 |
| Internal clearance | CN |
Technical advantages
The Needle Roller Inner Ring IR30X35X20,5 – 30X35X20,5 – INA offers several technical advantages making it a preferred choice for industrial applications:
- Constructed from heat-treated chrome steel 100Cr6, providing excellent rolling-contact fatigue life.
- Compact design facilitates integration into space-constrained assemblies.
- Standard CN radial clearance supports optimal performance without the need for preload adjustments.
- Operates efficiently at speeds up to 16,000 rpm, suitable for high-speed applications.
- Precision class P0 / ABEC-1 ensures consistent and reliable performance in demanding conditions.
Typical applications
This needle roller inner ring is utilized across various industries and machinery types, including:
- Automotive industry (gearboxes, transmission systems)
- Industrial machinery (conveyor systems, heavy-duty pumps)
- Aerospace applications (actuator mechanisms, landing gear systems)
- Robot manufacturing (servo motors, joint mechanisms)
- Textile machinery (spinning frames, looms)
Availability and ordering
At Eurobearing.eu, we specialize in providing high-quality mechanical components like the Needle Roller Inner Ring IR30X35X20,5-INA. This product is available for prompt delivery, and businesses can request a quote for bulk quantities to meet larger operational needs. Add it to your cart or contact us for a quotation today.

