... make Cranskshaft, Pinion Shaft, Crosshead assy for EMSCO/BOMCO F series mud pumps, GARDNER DENVER PZ-9, NATIONAL OILWELL 9-P-100 ... , 10-P130 and 12-P-160 mud pumps.Crankshaft Crankshaft is made of casted alloy steel. Eccentric ring ... , upper and lower guide structures are sued for other mud pumps, so that the concentricity can be adjusted by adding space ...