The conventional beam pumping unit in conformance to API standards is simple in structure, strongly resistant to load and working stably. It is easy to operate and repair and has a long service life.

Characteristics of this kind of pumping unit:

1. Pumping units conform to API Spec. 11E.
2. The structure is simple and reasonable, and it works smoothly with lower noise, easier to install and maintain.
3. Walking beam is a box or welded H steel beam with high strength, good rigidity and heavy capacity.
4. Gear reducer uses herringbone involutes or double circular-arc gears with high bearing capacity and long working life.
5. Horse head with swinging device moving side or upwards is flexible and convenient for well workover.
6. Central bearing and equalizer bearing feature heavy duty and reliable seal by adopting medium and wide series roller bearings.
7. Self-aligning bearing is used on equalizer to reduce mounting error and operating vibration.
8. Internal expansion or external contracting brake of safety device is easy, quick and effective for operating.

Technical Specifications