a grinding center for the simultaneous grinding of a plurality of main and rod bearings and / or central and end - side sections of crankshafts includes first and second stations . two main bearing grinding spindles , of which the first is movable only in the z - direction and the second only insignificantly movable in the x - direction , are mounted on a common rod bearing - compound slide . in the final phase of grinding , a correction of variations in size between the two processed rod bearings occurs via a separated drive of the second rod bearing - grinding spindle in accordance with a size or roundness correction . the variations are detected by measuring devices . an inclined profiled grinding wheel is provided for the grinding of the end sections .