A series of double-end grinder, divided into different styles by grinding different grinding ways: the disc,perforative style and reciprocator or design and modifications in accordance with users’ needs.The price and structure of that series of double-disc Grinder are both different, like MY7650 and MY7660 and MY7675. Adopted Road track are ball bearing track and rectangles track, and also programmed and equipped with programmable circuits, hydraulic tool used to control both reciprocator and dresser of grinding wheel.