BEARING ARRANGEMENT FOR THE WORKING SPINDLE OF A MACHINE

摘要

A bearing arrangement for the working spindle of a machine-tool, e.g. a lathe, comprises angular contact ball bearings in tandem-O-arrangement with an inner, a middle, and an outer ball bearing. To ensure that the effective leverage of this type of bearing arrangement is as short as possible and that its length is defined as far as possible and remains approximately constant under load, the diameter of the spindle is greater in the region of the outer bearing than in the region of the other bearings.