Deep Groove Ball Bearings SKF 61808

With dimensions of 40 × 52 × 7 mm, the SKF 61808 deep-groove ball bearing saves valuable installation space when subjected to radial loads.

The 61808 deep groove ball bearing is a narrow-profile, thin-section bearing. SKF manufactures this single-row model from standard 100Cr6 rolling bearing steel, which is also used for the rolling elements. Thanks to its small cross-section – with a 40 mm bore and a 52 mm outer diameter – designers can achieve particularly space-saving shaft mountings. The open design, without sealing washers, allows for direct lubrication via the machine’s surrounding oil or grease circuit.

What is the 61808 deep-groove ball bearing suitable for in operation?

This thin-section bearing is primarily used where radial installation space is severely limited and low mass is required. Typical applications can be found in general mechanical engineering, in precision mechanical equipment and in gearbox housings. The bearing primarily absorbs radial forces, but also guides the shaft reliably in both directions under moderate axial forces. Thanks to the sturdy sheet steel cage, the bearing runs smoothly and with low vibration even at higher speeds.

What are the key considerations for the open design of bearing 61808?

As this model has no integrated seals, the installation point in the housing must be protected against dirt and moisture. The 61808 deep-groove ball bearing has the standard radial clearance and tolerance class P0/PN (equivalent to ABEC 1). When fitting, ensure that the mating dimensions on the shaft and housing are clean. The permissible temperature range is from -20 to +120 degrees Celsius and covers standard industrial operating conditions.