Deep Groove Ball Bearings FAG 6405

The FAG 6405 deep-groove ball bearing is an open rolling bearing measuring 25 × 80 × 21 mm, designed for radial and axial loads.

The single-row deep groove ball bearing 6405 from FAG is designed as a versatile rolling bearing for demanding rotational movements. As it is manufactured from standard roller bearing steel (100Cr6), the component offers high dimensional stability in industrial applications. With a bore of 25 mm, an outer diameter of 80 mm and a width of 21 mm, it primarily absorbs radial forces. The raceway geometry also supports moderate axial forces in both directions.

What is the 6405 deep-groove ball bearing suitable for in operation?

This radial ball bearing is suitable for bearing arrangements with rotating shafts where radial loads and combined axial loads are the primary forces. The bearing is designed for operating temperatures ranging from -30 to +120 degrees. Design engineers prefer to use the 6405 series design where a relatively large outer ring of 80 mm is required in relation to the shaft diameter of 25 mm. This dimensioning enables a robust load-carrying capacity with a compact shaft seat.

What are the distinctive features of the open version with a sheet steel cage?

As an open bearing, the product has no integrated sealing washers. The component is lubricated via the surrounding machine housing, either with oil or grease. The guided sheet steel cage maintains the rolling elements at a uniform distance and reduces internal friction during rotation. Thanks to the standard radial bearing clearance and the standard tolerance class P0 (ABEC 1), the unit is suitable for standard fit conditions without extreme thermal expansion. Before installation, check that the customer-supplied housing seal prevents the ingress of foreign particles.