crank balance pumping units

API B seriescrank balance pumping unitsare conventional walking beam pumping units, it is the type of power equipment on the ground used in rod oil extraction.The products conform to API Spec.11E Specification for Pumping Units and other relative API standards, acquired the authorization to use Official API Monogram.Technical Performances High reliability, simple operation, easy maintenance, long service life. Gear reducer is involute herring-bone gearing, work smoothly and reliably. Complete machine with light weight, its convenient for installation and transportation.modelC114D-173-64C160D-200-74C228D-246-86WC320D-256-120C456D-305-144load rating(lbs)1730020000246002560030500spec.stroke length (in)64 52 4074 64 5386 70 54120 102 84144 123 102Max.stroke frequency(spm)2020101514rating(In-lbs)114000160000228000320000456000balance typecrank balancecrank balancecrank balancecrank balancecrank balancepitman armsstraight pitman arms U connecting on topstraight pitman arms U connecting on topstraight pitman arms 2 long bolt on basestraight pitman arms U connecting on topstraight pitman arms U connecting on topbasebase requirmentwhole,broad basewhole,broad base2 separate,base for equal high and width2 separate,high base2 separate,high basereducerrating circumgyrate direction114000In-lbs bidirectional160000In-lbs228000In-lbs bidirectional320000 In-lbs bidirectional456000 In-lbs bidirectionalmodel rate114D160D228D 28.8731320D456Dlube winter120#,summer200# winter120#,summer200# winter120#,summer200# winter120#, summer200# winter120#,summer200#externality dimension length×width×height(in326.2×78.74×193.7381.5×94.5×236.6378.35×85.75×247.72400×91.3×300.8445×106×329total weight(lbs)not including motor27955126803167514368352001680044143200235851026540