... the best variable speed drive for mud pump.Technical data:Input speed: 1000~1500 r/minTransmission power: ... /3012010YOTFJ875L12V190PZL-3F-1600CO1300F-3/2512011YOTFJ875B2016H(16V)F-2200HLCO1800FHydraulic Transmission Business Division of CNPC Jichai Power Equipment Company ... . Currently, the plant has formed hydraulic coupling and hydraulic transmission unit series products of 280, 420, 560, 650, 670, ...