Deep Groove Ball Bearings SKF 6310 -Z/C3

The SKF 6310 -Z/C3 deep groove ball bearing, with a 50 mm bore and increased C3 clearance, offers a tailored solution for industrial applications subject to thermal stress.

This single-row deep groove ball bearing 6310 -Z/C3 from SKF primarily supports radial loads and also accommodates axial forces in both directions. With dimensions of 50x110x27 mm, the rolling bearing complies with tolerance class P0/PN or ABEC 1. The rings and rolling elements are made from standard rolling-bearing steel 100Cr6. A guided sheet steel cage keeps the balls spaced apart, whilst the component withstands operating temperatures ranging from -20 to +150 degrees.

In which operating conditions does the 6310 -Z/C3 deep-groove ball bearing prove its worth?

Design engineers and maintenance personnel select this radial ball bearing primarily for applications where operational heating occurs. As the bearing has the increased clearance class C3, it helps to compensate for thermal expansion between the shaft and the housing. The design, which has no flange or groove on the cylindrical outer ring, allows for straightforward installation in smooth housing bores, where axial guidance is provided by housing or shaft shoulders.

What is the function of the Z cover plate and C3 clearance?

The ‘Z’ designation stands for a single-sided, non-contacting sheet metal cover. This protects the bearing interior from the ingress of coarse contaminants, whilst the opposite open side allows for a targeted supply of lubricant from inside the housing. The C3 bearing clearance refers to a radial operating clearance that exceeds that of the standard basic design. This counteracts the risk of the rolling elements becoming jammed if fits or temperature differences between the inner and outer rings reduce the clearance during operation.