SKF IR 25x30x20 Inner Ring

Application in Industrial and Automotive Systems

The SKF IR 25x30x20 inner ring is designed as a precision insert ring for needle roller bearings, ensuring reliable performance in applications where the shaft cannot be hardened or ground. With dimensions of Ø25 mm inner diameter, Ø30 mm outer diameter and 20 mm width, this inner ring is ideal for use in tight spaces within bearing housings or bearing units in industrial machinery, automotive transmissions, hydraulics and system assemblies that demand compact yet durable components.

Key Features & Benefits

• Compact size with robust performance: Standard dimensions (25x30x20 mm) make this ring easy to integrate into bearing units where space is limited.

• High durability for industrial applications: Manufactured by SKF, the ring is designed to work in concert with needle roller assemblies, allowing for higher radial load capacity and improved lifespan compared to standard bushings.

• Facilitates installation in bearing housings and bearing units: The inner ring simplifies installation when the shaft cannot be hardened or ground, supporting easier maintenance and replacement in industrial and automotive applications.

• Versatile for multiple industries: Suitable as part of a bearing unit, insert bearing module or bearing housing assembly in sectors such as manufacturing, automation, engine systems and transportation equipment.

Technical Specifications & Selection Guide

• Product type: Inner ring for needle roller bearing

• Code: IR 25x30x20

• Dimensions: Inner diameter d = 25 mm; Outer diameter D = 30 mm; Width B = 20 mm

• Material: Bearing steel (standard) with precision finish

• Typical usage: Insert ring combined with needle roller and cage assemblies, in bearing units or obudowa łożyskowa designs

• Main search phrases: “SKF IR 25x30x20”, “inner ring needle roller bearing 25x30x20”, “pierścień wewnętrzny IR25x30x20”, “needle roller inner ring industrial application”

• Synonyms and related terms: “łożysko igiełkowe”, “wewnętrzny pierścień łożyska igiełkowego”, “jednostka łożyskowa”, “obudowa łożyskowa”, “industrial needle bearing insert”

As a business-to-business buyer, you will appreciate the ring’s standard size, brand reliability and suitability for integration in bearing assemblies to support high durability, repeat maintenance efficiency and long-term operation.

FAQ

Q1: What is the purpose of the IR inner ring in needle roller bearings?
A1: The IR inner ring allows use of a standard shaft without needing hardening or precision grinding. It serves as the raceway for the needle rollers and is essential when installing needle roller bearing assemblies on softer or treated shafts.

Q2: When should I select the IR 25x30x20 ring?
A2: Choose IR 25x30x20 when your application calls for a bearing unit with a shaft diameter of 25 mm, an outer ring assembly of 30 mm and available width of 20 mm. Typical applications include compact industrial drives, automation modules or automotive sub-assemblies requiring high durability and minimal space.

Q3: Can this inner ring be integrated into a bearing unit or housing assembly?
A3: Yes, this ring is designed for use in bearing housings and bearing units. It simplifies repair or replacement of needle roller bearing assemblies, especially when shaft surface treating was not feasible or cost-effective.