1. A PTU consists of a hydraulic motor that powers a hydraulic pump . 2. Hydraulic pumps , motors, and cylinders can be combined into hydraulic drive systems.3. Feith also said the breakers were on an auxiliary hydraulic pump . 4. The hydraulic pump speed was 3, 600 rpm and supplied hydraulic pressure of. 5. The associated steam raising plant and hydraulic pumps have been removed. 6. The hydraulic pump portion of the pyropress is a screw pump. 7. Oils are forced through hydraulic pumps , which transmit this force to hydraulic cylinders. 8. It is commonly used to drive large winches or hydraulic pumps . 9. The 350 bar pressure is generated by eight de-clutchable hydraulic pumps . 10. The gearbox in turn drives various electrical generators and hydraulic pumps .