The heart of a hydraulic piston pump, called a cylinder block or rotor, starts as a turned blank up to eight inches diameter. Then, nine circumferential piston bores from 0.1875 to 1.5 in. (4.8 - 38.1 ...
Lapping is a final abrasive finishing operation that produces extreme dimensional accuracy, corrects minor imperfections of shape, refines surface finish and produces close fit between mating surfaces ...
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