HEAVY DUTY GEAR BOX speed ratio 1:1 or 2:1, ... to 95%.cast iron or aluminum gearbox are available. NOSEN HEAVY DUTY GEAR BOX RNV-Series,cubic shape of gearbox.Model ... infrared thermometerApplication Industries:diesel engine drive water pump,textile,food processing machine,medicine,rotary axis drives, conveyors, packaging equipment,material handling ...