Patent ID: 6913522

Claim:
Apparatus for grinding center bearings of a crankshaft, comprising: a clamping unit for clamping and driving said crankshaft in an axis of its rotation; a grinding spindle unit with a grinding spindle, said grinding spindle having an axis of rotation parallel to said axis of rotation of said crankshaft, and said grinding spindle being positionable perpendicular to said crankshaft; a plurality of grinding wheels on said grinding spindle, corresponding to a number of center bearings to be ground; a plurality of steadies, for supporting said crankshaft, opposite said grinding spindle, at least one of which supports said crankshaft in a region of at least one center bearing; and an additional machining unit for performing preliminary grinding on at least one center bearing, by forming an elevated bearing seat for said steadies, opposite said bearing, such that said steadies are continuously guidable during grinding of said center bearings and provide counter-support.