Deep Groove Ball Bearings SKF 6204 /C4

The SKF 6204/C4 deep-groove ball bearing measures 20 × 47 × 14 mm and compensates for operational thermal expansion thanks to its significantly increased radial clearance.

The SKF 6204/C4 single-row deep groove ball bearing is designed for applications where radial loads act within a confined space. With an inside diameter of 20 mm, an outside diameter of 47 mm and a width of 14 mm, this rolling bearing complies with the Explorer performance class. Manufactured from standard 100Cr6 rolling-element bearing steel and fitted with a sheet steel cage, the open design covers operating temperatures from –20 to +150 degrees. This design combines dimensional accuracy to Class P6 with running accuracy to Class P5.

In which applications is the 6204/C4 deep-groove ball bearing used?

The open deep groove ball bearing is primarily used in designs where lubricant is supplied from the outside via the housing. Thanks to its unobstructed design without integrated sealing washers, the lubricant reaches the raceways and balls directly. Typical applications include assemblies with external sealing where operating heat acts on the bearing. The rolling bearing accommodates radial forces as well as axial loads in both directions, whilst the flangeless cylindrical outer ring allows for installation in standard housings.

When is the increased bearing clearance C4 required?

The designation C4 indicates a significantly increased radial clearance compared with the standard version. This variant is recommended when temperature differences between the rotating shaft and the housing cause the inner ring to expand. Sufficient operating clearance reduces the risk of seizing or thermal overload. Furthermore, tight press fits require more radial clearance prior to assembly. The combination of C4 bearing clearance and tight manufacturing tolerances – P6 for dimensions and P5 for running accuracy – ensures low-vibration operation during service.