Deep Groove Ball Bearings FAG 624

The 624 deep-groove ball bearing from FAG Rolling Bearings provides a compact bearing solution for shafts with a diameter of 4 mm, whilst requiring minimal installation space.

The 624 deep-groove ball bearing is a single-row miniature rolling bearing conforming to the standard tolerance class P0/PN (ABEC 1). Manufactured from 100Cr6 bearing steel, the component primarily accommodates radial forces as well as light axial loads in both directions. Thanks to the guided sheet steel cage and the flangeless cylindrical outer ring, this design can be fitted into suitable housing bores. The roller bearing is designed for a temperature range of –30 to +120 degrees Celsius.

What is the 624 deep groove ball bearing suitable for?

Miniature bearings of this size are primarily used where small shaft diameters need to be guided precisely and the available installation space is severely restricted. Due to its open design without contact seals, the mechanism starts up with very low rotational resistance. This characteristic is beneficial for applications requiring smooth running, where lubricants can be supplied externally via the surrounding housing.

When is the open design without a seal recommended?

The open design allows the rolling elements to be relubricated directly with oil or application-specific grease, depending on the specific application. To prevent the ingress of foreign particles and moisture, the surrounding structure should be suitably sealed. The standard radial bearing clearance set at the factory provides a balanced operating clearance for typical ambient temperatures. Provided there is no extreme thermal expansion, this bearing clearance ensures smooth and low-vibration operation of the shaft.