... variable speed drive for mud pump.Technical data:Input speed: 1000~1500 r/minTransmission power: 200~3000 kWRated efficiency: ≥ ... in China currently.Parameters of YOTFJ560~875 series speed-adjustable coupling reverse-gear box power unitsSequence numberCoupling modelDiesel engine ... of 280, 420, 560, 650, 670, 750, 875, 1000, 1150,etc; oil-extended adjusting centrifugal turbine torque converter series ...