The Needle Roller Inner Ring LR20X25X12,5 – 20X25X12,5 – INA is a precision-engineered component designed for use in applications requiring high load capacities and compact installation. Manufactured by INA, a renowned leader in bearing technology, this inner ring measures 20 mm in bore diameter, 25 mm in outer diameter, and 12.5 mm in width. It is typically utilized in heavy machinery, automotive transmissions, and industrial gearboxes, where space constraints and high torque transmission are critical.
Technical specifications
| Specification | Value |
|---|---|
| Bore diameter (d) | 20 mm |
| Outer diameter (D) | 25 mm |
| Width (B) | 12.5 mm |
| Ring material | Chrome steel 100Cr6 |
| Precision class | P0 / ABEC-1 |
Technical advantages
The Needle Roller Inner Ring LR20X25X12,5 – 20X25X12,5 – INA offers several technical benefits that enhance its suitability for demanding industrial applications:
- Manufactured from high-strength 100Cr6 chrome steel, ensuring excellent wear resistance and durability under load.
- Compact design allows for efficient integration into tight spaces without compromising load capacity.
- Standard P0 precision class, suitable for general-purpose applications where moderate precision is required.
- Optimized for high radial loads, making it ideal for use in heavy machinery and automotive systems.
- Seamless compatibility with other INA needle roller bearings, reducing the need for additional components.
Typical applications
This inner ring is most commonly used in the following industries and applications:
- Automotive transmissions (gearboxes, differential assemblies)
- Heavy machinery (earthmoving equipment, cranes)
- Industrial gearboxes (reducers, speed increasers)
- Textile machinery (spinning systems, weaving equipment)
- Printing presses (offset printing units, rotary presses)
Availability and ordering
Eurobearing.eu specializes in providing high-quality industrial components with fast availability of the Needle Roller Inner Ring LR20X25X12,5 – INA. For bulk quantities, customers can conveniently request a quote. Add this item to your cart or contact us for a quotation to meet your specific requirements.

