How does the performance of an electric spindle assembly relate to the bearings?

Published:

2022-11-07

Machine tool bearing accuracy and quality are key factors affecting the performance of machine tool spindles. For how to define the precision level of a precision bearing, only the width tolerance of the inner and outer ring, roundness, verticality, taper, axial runout and radial runout are defined. To make the machine tool spindle can achieve high precision, high speed, high stiffness and low vibration and heat requirements, it is necessary to control more parameters of the bearing itself.

Before leaving the factory, the ultra-precision angular contact ball bearings are subjected to a 100 per cent functional test. The ultra-precision angular contact ball bearings are tested by means of digital vibration filter analysis to ensure the quality and application performance of the bearings. All test results are traceable.

Cleanliness is of paramount importance for precision bearing products, which are generally cleaned for 3h with a multi-stage solvent, thus avoiding impurities from mixing with the bearings and preventing inherent sources of contamination. In addition, the non-working surfaces of the bearings are also ground and the bearings are free of impurities before they leave the factory. As a result, bearing products are produced that increase machine uptime.

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