The Needle Roller Inner Ring LR40X45X16,5 – 40X45X16,5 – INA is a precision-engineered component designed for use in a variety of industrial applications. Manufactured by INA, this specific inner ring is part of the bearing accessories category, specifically tailored for needle roller bearings. With dimensions of 40 mm bore diameter, 45 mm outer diameter, and a width of 16.5 mm, it is ideally suited for high-load and high-speed environments where compact design and efficiency are critical.
Technical specifications
| Specification | Value |
|---|---|
| Bore diameter (d) | 40 mm |
| Outer diameter (D) | 45 mm |
| Width (B) | 16.5 mm |
| Ring material | Chrome steel 100Cr6 |
| Basic dynamic load rating (C) | 34.2 kN |
| Basic static load rating (C0) | 53.4 kN |
| Limiting speed | 15,000 rpm |
| Precision class | P0 / ABEC-1 |
| Internal clearance | Standard |
Technical advantages
The Needle Roller Inner Ring LR40X45X16,5 – 40X45X16,5 – INA offers several technical benefits that make it a preferred choice in demanding applications:
- Designed to handle basic dynamic loads of up to 34.2 kN, ensuring robust performance under stress.
- Crafted from 100Cr6 chrome steel, providing exceptional resistance to wear and rolling-contact fatigue.
- Capable of operating at high speeds of up to 15,000 rpm, suitable for dynamic applications.
- Standard internal clearance facilitates easy integration into various assemblies without the need for preload adjustments.
- Precision class P0 / ABEC-1 ensures consistent operational accuracy and reliability.
Typical applications
This inner ring is versatile and can be used across a range of industries and machinery:
- Automotive industry (transmission systems, differential units)
- Textile machinery (spinning machines, weaving equipment)
- Printing presses (cylinder bearings, roller assemblies)
- Industrial gearboxes (planetary reducers, helical gear systems)
- Construction equipment (excavator joints, crane pivots)
Availability and ordering
Eurobearing.eu is your specialized B2B supplier for the Needle Roller Inner Ring LR40X45X16,5-INA, offering prompt availability and competitive pricing. For bulk orders or to learn more about our offerings, request a quote today or add this item to your cart for fast processing.

