Deep Groove Ball Bearings SKF 6403 /C3

The SKF 6403/C3 deep groove ball bearing, with dimensions of 17 × 62 × 17 mm and increased bearing clearance, offers a robust solution for radial guidance.

The SKF 6403 /C3 single-row deep groove ball bearing primarily accommodates radial forces as well as axial forces in both directions. The open design, without sealing rings, ensures smooth running and is suitable for applications where lubricant is supplied directly via the housing. The use of standard rolling-element bearing steel (100Cr6) for the inner ring, outer ring and rolling elements ensures that the component retains its dimensional stability at operating temperatures ranging from –20 to +150 degrees Celsius.

What is the 6403/C3 deep groove ball bearing suitable for in operation?

It is fitted onto shafts with a diameter of 17 mm and sufficient installation space for an outer diameter of 62 mm. Typical applications include bearing arrangements subjected to combined loads in general mechanical engineering. As the outer ring is manufactured without a flange or groove, the component can be slid cylindrically into smooth housing bores. The sheet steel cage guides the rolling elements and is designed to withstand mechanical stresses during operation.

What are the advantages of the increased C3 clearance?

The C3 designation indicates a radial bearing clearance that is slightly greater than the standard clearance. This additional clearance prevents the rolling elements from jamming when operational temperature differences arise between the inner and outer rings. Similarly, the C3 bearing clearance helps to compensate for operational heating when tight fits on the shaft or housing reduce the internal bearing clearance after installation. In conjunction with tolerance class P0/PN, this design supports smooth running under thermal loads.