Deep Groove Ball Bearings SKF 6309 -RS1

The SKF 6309-RS1 deep groove ball bearing combines precise main dimensions of 45 × 100 × 25 mm with single-sided protection provided by a sliding RS1 sealing lip.

The SKF 6309 -RS1 deep groove ball bearing is a single-row rolling bearing made from 100Cr6 bearing steel. It primarily accommodates radial forces, but also handles axial loads in both directions thanks to its deep raceways. A sheet steel cage maintains an even spacing between the rolling elements and ensures smooth running. Thanks to tolerance class P0/PN (corresponding to ABEC 1) and standard radial clearance, the component fits precisely into standardised industrial applications.

What loads and operating conditions can the 6309-RS1 deep groove ball bearing withstand?

This rolling bearing accommodates combined forces on shafts with a diameter of 45 mm. Suitable applications can be found in mechanical engineering for shaft mountings with a predominantly radial load. The bearing is designed for operating temperatures ranging from –20 to +120 degrees Celsius. Thanks to its single-sided seal, it is particularly suitable for installations where one side is structurally protected within the housing.

What function does the single-sided RS1 seal fulfil in the design?

The -RS1 version features a sliding seal on one side of the bearing, whilst the opposite side remains open. This design specifically shields the bearing’s interior from external contaminants whilst simultaneously allowing lubricant to enter from the open side. During assembly, the sealed side faces the potential source of contamination. As the cylindrical outer ring is manufactured without a groove or flange, the component can be press-fitted directly into flat housing bores.