- Min. Order:   - 1set 
- Place of origin:   - China 
- Price Condition:   - FOB  
- Supply Ability:   - 6,000 sets per year 
aligning bearings are adopted in equalizer beam bearing and crank pin bearing, reducing installation errors and the vibration when pumping unit is operating.
3.Rack gear is adopted to adjust the crank counterweight, which is very precise and convenient.
4.Hanging structure of the horsehead is"self-abdicating"mechanism , facilitating wellhead operations.
5.Gear reducer adopts herringbone involute 
                [Related Keywords : pumping unit, beam pumping unit, beam unit, pump jack]