GJ wide-belt pumping unit is a new type of mechnical transmission chain-belt pumping unit, which is substructure optimized, performance improved by our company on the basis of the traditional chain-type pumping unit. This kind of pumping unit is with morden design and a compact substructure, convenient to be fixed and used, and it also have a good operating performance, low energy consumption, long stroke and low frequency of stroke, especially can be used in the recovery of deep oilwell and heavy oilwell. This series pumping unit has advanced technology at international markets and earned good economical and social profits for customers home and abroad by its high efficency, reliance and energy–saving..

The main advantages:
1. Long stroke, low frequency of stroke, low cost. Long stroke make pump factor high and pressure surge small; low frequency of stroke make downhole equiment comsumption small and operation cost small.
2. adjustable workover location and easy for workover.
3 .Belt transmission. It adopts long life, high srength and heavy duty belt for power transmission. Its elasticity reduce surge of direction –changing, which makes pumping string operate smoothly.
4. Automatic relocation device. Adopt automatic relocation device with humanity design, which can reduce labor input and make the workover operation more convenient.
5. Adopts limited element analysis to make parts optimise analysis, the rigid of whole unit become smaller which makes operation reliable and stable.
6. Reliable braking device and can be equipped with electrical braking device based on customers requirments and realize mixed braking purpose and more safe. The whole set adopts closed design, foldable transportation which is safe and convenient.
7. Don't need frequent maintenance. It adopts wore bearing, long life belt and heavy duty chain which ensure the reliablity of the whole set.
8. Mechanical balance and complete lubricant system, automatic protect device and whole set enclosed, which makes the equipment   extending maintenance period and raising oil output.
9. Automatic control for whole set can be realized based on customer requirments. Automatically control stroke times and automatically re cover oil which makes the unmanned on duty be reality.