... on-load startup,overload protection,torsional vibration isolation,impact mitigation,stepless speed regulation YOTFJ450/560/650/750/875 ... of on-load startup, overload protection, torsional vibration isolation, impact mitigation, stepless speed regulation, quick and steady clutch, etc ... , 650, 750, 830, 900 mm, which can match with internal combustion engines (diesel engine, gas engine) of 135, 140, 160 ...