Bearing preload spring
Schnorr GmbH
Two problems continually occupy design engineers using bearings, the reduction in noise and the elimination of play in ball bearings. A solution of both these problems has been achieved by Schnorr working in close cooperation with SKF. The fitting of a special version of our disc springs effectively reduces both problems and frequently results in simpler designs.
Fitting of bearing preload springs
The drawing illustrates how the outer ring of the ball bearing usually is correctly preloaded using a disc spring “K“ series. Depending on the requirements of the design, one or more disc springs can be used. In some cases it is preferable to preload the inner ring of the bearing. That is why the bore holes of disc springs for ball bearings were chosen in such a way that they match the internal diameter of an other ball bearing size. That way, a disc spring suitable for pushing the external ring of the ball bearing 6302, for example, can also be used to pretension the inner rings of the ball bearings 6205 and 6305.
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