Deep Groove Ball Bearings SKF 635

The SKF 635 deep groove ball bearing features compact dimensions of 5 × 19 × 6 mm for smooth-running shafts in precision engineering applications.

The 635 deep-groove ball bearing is a single-row radial ball bearing in an open design, made from standard 100Cr6 rolling-element bearing steel. Manufactured to the SKF Explorer performance class, this miniature bearing meets requirements for dimensional accuracy and smooth running. The design does not require integrated sealing washers, resulting in low friction losses. A dimensionally stable sheet steel cage guides the rolling elements evenly in the deep raceways and allows operation within a temperature range of -20 to +120 degrees Celsius.

In which applications is the 635 deep-groove ball bearing used?

Typical applications for the 635 deep-groove ball bearing include compact devices, small electric motors and precision engineering assemblies. The bearing primarily absorbs radial forces and guides the shaft in both directions, even under axial loads. As it does not feature contact seals, the shaft runs smoothly. The component is suitable for designs where external housing sealing is already in place or where oil circulation lubrication is used.

What are the distinctive features of the open design without seals?

In this variant without sealing washers, lubricants such as oil or grease can reach the raceways and rolling elements unhindered. This facilitates relubrication whilst the system is running and ensures low friction torques. During design, care must be taken to ensure that the installation point remains protected against the ingress of dirt or moisture. With the standard radial bearing clearance and tolerance class P0 (ABEC 1), the roller bearing fits into standard fits without the need for extensive reworking of the shaft or housing.