Deep Groove Ball Bearings SKF 6003 /C3

The SKF 6003/C3 single-row deep groove ball bearing, with dimensions of 17x35x10 mm, offers compact dimensions and increased bearing clearance for shaft mountings subject to thermal loads.

The SKF 6003/C3 deep groove ball bearing is an open, single-row radial ball bearing made from standard rolling bearing steel (100Cr6). Designed for radial loads and moderate axial forces in both directions, the bearing does not require integrated grinding or cover plates. The Explorer version combines dimensional accuracy to P6 with improved running accuracy to P5. As a result, the bearing ensures smooth running in demanding assemblies within a permissible temperature range of –20 to +150 °C.

In which designs is the 6003/C3 deep groove ball bearing used?

This rolling bearing is primarily used in shaft mountings where thermal influences or installation conditions cause the shaft and inner ring to expand. As this is an open bearing, lubricating oil or grease from the surrounding system reaches the rolling elements and raceways directly. The sheet steel cage guides the rolling elements evenly and is suitable for medium to high speeds in externally protected housings.

What are the characteristics of the C3 clearance and tolerance class P6/P5 in the 6003 deep groove ball bearing?

The C3 designation indicates a slightly increased radial clearance compared with the standard version. When the shaft and inner ring heat up during operation, the steel expands; the additional radial clearance compensates for this thermal expansion and reduces the risk of internal stresses. At the same time, the P6 dimensional accuracy and P5 running accuracy ensure precise concentricity within the bearing seat. An external housing seal protects the open bearing from the ingress of dirt.