The Needle Roller Inner Ring IR35X42X20 – 35X42X20 is a crucial component for various industrial applications, designed to complement needle roller bearings by providing an optimal raceway surface. With dimensions of 35 mm bore diameter, 42 mm outer diameter, and 20 mm width, this product is an essential accessory in the category of bearing accessories, specifically for needle roller inner rings. Its precise engineering ensures compatibility and efficiency in mechanical systems, making it a reliable choice for industries that require compact and high-load capacity bearing solutions.
Technical specifications
| Specification | Value |
|---|---|
| Bore diameter (d) | 35 mm |
| Outer diameter (D) | 42 mm |
| Width (B) | 20 mm |
| Ring material | Chrome steel 100Cr6 |
| Basic dynamic load rating (C) | 30.1 kN |
| Basic static load rating (C0) | 45.5 kN |
| Limiting speed | 12,000 rpm |
| Reference speed | 10,000 rpm |
| Operating temperature range | -20 / +120 °C |
| Precision class | P0 / ABEC-1 |
Technical advantages
This needle roller inner ring offers several technical benefits that enhance its functionality and adaptability in various applications:
- Manufactured from heat-treated 100Cr6 chrome steel, ensuring a rolling-contact fatigue life exceeding 107 cycles.
- Standard P0 precision class, suitable for general-purpose applications requiring robust performance.
- Operates efficiently at speeds up to 12,000 rpm, supporting high-speed applications.
- Capable of handling dynamic loads up to 30.1 kN, providing strength under operational stress.
- Effective in temperatures ranging from -20 to +120 °C, ensuring versatility in various environments.
Typical applications
The Needle Roller Inner Ring IR35X42X20 is widely used across several industries, including:
- Automotive industry (gearboxes, transmissions, drive shafts)
- Textile machinery (spinning frames, weaving machines)
- Construction equipment (excavators, cranes, loaders)
- Industrial robotics (articulated robots, delta robots)
- Agricultural machinery (harvesters, tractors, balers)
Availability and ordering
Eurobearing.eu, a specialized B2B supplier, offers the Needle Roller Inner Ring IR35X42X20IS1-ECO with fast availability. Businesses can easily add this product to their cart or request a quotation for bulk orders to meet their specific needs.

