The machine is designed for grinding base edge of flat glass, with arris grinding. It is appropriate for tough processing before tempering and the other more processing. CZPT adopts chain transmitting system consisting of particular stretchy rubber pad. Front rail is pushed by motors and transfer in parallel to adapt to various glass thickness. Doing work speed is adjustable via pace regulator. Working speed and glass thickness appear on electronic display. Amperometer permit checking wheel absorption and for that reason it is correct working. Spindles for arris adopt drag plates composition, which is no vibration in working. This equipment is featured by compact framework, modest base dimension, higher velocity, secure top quality and reduced price.