Api Unit For Oilwell Well Pumping Units 

There are several types of Surface Units that could cover a wide range of applications. Gear Boxes are made of Gear Reducer and a housing which support the torque demand and transmit the rotary movement from the prime mover to the crankshaft of the surface unit. Two prime movers types are used, commonly depending on the power availability: electric motor and/or internal combustion engines. At the wellhead the stuffing box has as main function, avoid damages to the polished rod and prevent oil leaks. The polished rod transmits the reciprocating movement from the surface unit to the sucker rod string. The beam pump structure: defined as all components between the carrier bar and the speed reducer output shaft. Carrier bar: the part of the pumping unit that supports the load of the sucker rod string through the polished rod clamp. Horsehead: a component of a beam pumping unit designed to transmit force and motion from the walking beam to the flexible wireline. Its shape is such…