SKF 21308 E Cylindrical 40 mm ID Roller Bearing, 90 mm OD

This roller bearing is designed to support radial loads in rotating machinery where a cylindrical bore and Compact width are required. It operates as a single-row cylindrical-bore bearing with a metal cage and steel rolling elements, intended for applications requiring a balance of dynamic and static load-carrying capacity at moderately high-speed operation.

• Dynamic capacity 107 kN provides sustained load-carrying performance
• Static capacity 108 kN resists deformation under heavy stationary loads
• Sheet-metal cage reduces friction and maintains roller spacing
• Steel rollers and rings ensure wear‑resistant rolling contact
• Internal clearance class CN accommodates moderate radial displacement
• Limiting speed 9,500 r/min permits high-speed rotation where required

• Suitable for industrial gearboxes with cylindrical bores
• Ideal for shafts requiring 40 mm bore support
• Used with rotating assemblies needing single-row load support
• Can be used for drives operating up to 9,500 r/min
• Suitable for machines where metal-cage robustness is needed

It is designed for a cylindrical-bore mounting arrangement to fit onto plain shafts.

The CN clearance provides moderate internal play to accommodate thermal expansion and slight misalignment without excessive preload.

The rollers and rings are MADE of steel while the cage is formed from sheet metal.

The static rating of 108 kN indicates resistance to permanent deformation when subjected to substantial stationary forces.