Deep Groove Ball Bearings FAG 634

The FAG 634 single-row deep-groove ball bearing, with dimensions of 4x16x5 mm, is suitable for space-saving designs in precision mechanical drives.

The 634 deep-groove ball bearing is a compact miniature roller bearing from the FAG range. The single-row bearing is made from standard 100Cr6 rolling-element steel and accommodates shafts with a diameter of 4 mm, whilst having an outer diameter of 16 mm. Designs with limited installation space benefit from the narrow width of 5 mm. As a universal radial bearing, this design primarily accommodates radial loads, but also absorbs moderate axial forces in both directions.

What is the 634 deep groove ball bearing suitable for in operation?

The 634 deep-groove ball bearing is primarily used where rotational movements are required in very confined spaces. Typical applications include compact shaft mountings or precision mechanical device assemblies. As it is manufactured to tolerance class P0 (standard tolerance or ABEC 1), the miniature bearing runs smoothly and with low vibration. As the outer ring is flangeless, the component can be fitted flush into cylindrical housing bores.

When is the open design with a sheet steel cage appropriate?

The open design without integrated sealing washers allows lubricants to reach the rolling elements directly. This proves advantageous when the bearing is integrated into a sealed, oil-lubricated gearbox housing. The sheet steel cage guides the rolling elements within the specified temperature range of –30 to +120 degrees Celsius. However, for dusty environments, designers should provide external sealing elements to prevent the ingress of dirt particles into the bearing interior.