Model HR horizontal double-stage piston pusher centrifuge mainly consists of pump assemby, pusher mechanism,flame,bearing, bowl, sieves, control-box, etc. Pusher mechanism. bowl and other parts are supported on the flame by bearing assembly. The pump assembly is also supposed by the flame, of which oil pump stretching into the oil pond. Rotary body is connected with the main machine through Vbelt. Electric control-box is an independent system, installed in a suitable place for main machine.