What Is a Pumping Unit

1 Introduction. The pumping unit is the mechanism that converts the rotary motion of the prime mover into the reciprocating vertical movement required at the polished rod. Most types of pumping units utilize a walking beam, inherited from the days of the cable-tool drilling rigs.

What is hydraulic pumping unit?

A hydraulic pump is a device that converts mechanical energy into hydraulic energy. … This hydraulic drive system is a machine that uses liquid fluid power to perform work—a typical example of such a machine is the excavator. Most heavy construction vehicles use the hydraulic pump in a hydraulic system.

What are the different components of pumping unit?

• the crank arm which rotates with the slow-speed shaft of the gear reducer.
• the pitman which connects the crank arm to the walking beam.
• the portion of the walking beam from the equalizer bearing to the center bearing.
• the fixed distance between the saddle bearing and the crankshaft.