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This Conventional Walking Beam pumping unit is designed and manufactured according to "API-11E" norm, its parameter is reasonable and safe credibility. This pumping unit uses the walking beam to be balanced, compares with the similar conventional product, may save about electricity 30% , its walking beam counterbalance is adjusted with the screw rod to the needed position, the ease of operation is reliable.This instruction booklet to the B25-67-36 pumping unit structure performance, installs the debugging, the lubrication and the maintenance aspect question provides the basis, please defer to the working instruction use equipment.The pumping unit model is indicated as: B 25 D – 67 – 36 Max. stroke Max. suspending load Reduction gear for double ratio Rated torque Walking beam balanced