Deep Groove Ball Bearings FAG 6224 -C4

The FAG 6224-C4 deep-groove ball bearing, with a 120 mm bore and increased C4 bearing clearance, allows for thermal expansion.

This single-row deep-groove ball bearing 6224 -C4 from FAG primarily accommodates radial loads as well as moderate axial forces in both directions. Manufactured from standard rolling-element bearing steel 100Cr6, the bearing is characterised by dimensional stability within a temperature range of -20 to +150 degrees. The sheet steel cage guides the rolling elements securely along the raceways. With dimensions of 120 × 215 × 40 mm, the component is suitable for demanding shaft mountings in mechanical and plant engineering.

What requirements does the 6224-C4 deep groove ball bearing meet when subjected to heat?

The component is primarily used where significant operating heat is generated or where tight fits reduce internal clearance. As the outer ring is manufactured without a flange or ring groove, the rolling bearing can be fitted with a positive fit into cylindrical housing bores. By absorbing radial forces, the design supports smooth rotational movements even when there are thermal differences between the shaft and the housing.

How does the significantly increased bearing clearance (C4) affect operation?

The designation C4 indicates a significantly increased radial bearing clearance, which exceeds the normal operating clearance and is greater than the C3 class. This additional clearance serves to compensate for thermal expansion of the shaft without the rolling elements becoming stressed during operation. As an open bearing, this model has no sealing washers, meaning that lubrication must be supplied via the housing and an external housing seal is required.