Series 621,622,623 and 624 applications include presses for metal forming, stamping, embossing and drawing, canning, automobile bodies, shears and die cutters; transmissions for machinery and vehicles, marine engineering, stationary and mobile cranes, and multi-motor drives; brakes for hydraulic drive motors of excavator wheels, cranes, winches, agricultural  tractors, safety brakes for machine tool and servo-presses, and all kind of hydraulically driven machines.