The Needle Roller Inner Ring LR17X20X30,5 – 17X20X30,5 – INA is a precision component designed for high-performance mechanical applications. Manufactured by INA, a renowned name in the industry, this specific needle roller inner ring has dimensions of 17 mm bore diameter, 20 mm outer diameter, and 30.5 mm width. It is commonly used in industrial machinery requiring precise alignment and robust load-bearing capabilities, making it an essential component in various mechanical assemblies.
Technical specifications
| Specification | Value |
| Bore diameter (d) | 17 mm |
| Outer diameter (D) | 20 mm |
| Width (B) | 30.5 mm |
| Basic dynamic load rating (C) | 12.8 kN |
| Basic static load rating (C0) | 18.5 kN |
| Limiting speed | 18,000 rpm |
| Ring material | Chrome steel 100Cr6 |
| Precision class | P0 |
| Internal clearance | Standard CN |
| ISO / cross-reference equivalent code | LR17X20X30,5 |
Technical advantages
The Needle Roller Inner Ring LR17X20X30,5 – 17X20X30,5 – INA offers a range of technical benefits that enhance its functionality in industrial settings:
- Operates efficiently at speeds up to 18,000 rpm, suitable for high-speed machinery.
- Manufactured from heat-treated 100Cr6 chrome steel, ensuring a rolling-contact fatigue life exceeding 10^7 cycles.
- Standard CN radial clearance allows for seamless integration in assemblies without needing preload adjustments.
- Capable of withstanding dynamic loads up to 12.8 kN, providing robust performance under demanding conditions.
- Static load capacity of 18.5 kN ensures durability during stationary periods.
Typical applications
The Needle Roller Inner Ring LR17X20X30,5 – 17X20X30,5 – INA is ideally suited for a variety of industrial applications, including:
- Automotive systems (transmission shafts, gearboxes)
- Textile machinery (spinning machines, looms)
- Agricultural equipment (harvesters, balers)
- Construction machinery (excavators, cranes)
- Machine tools (lathes, milling machines)
Availability and ordering
Eurobearing.eu is your go-to B2B supplier for mechanical components, offering the Needle Roller Inner Ring LR17X20X30,5 – 17X20X30,5 – INA with fast availability. Explore our website to add this item to your cart or request a quote for bulk purchases to meet your industrial needs.

