Electrical. A camshaft, driven by an electric motor or a pneumatic motor, was used to operate contactors in sequence. By this means, resistors or tap changers were switched in or out of the circuit to vary the speed of the main motor. This system was .
Wheel Diameter Discard. Coolant Used (Water or Oil based)* Target Life. Cycle Time. E. Problems now existing in grinding and expectations ... Engine camshaft cam lobe journal grinding Crankshaft main journal pin grinding Compressor camshaft grinding General workpiece external cylindrical/plane grinding.