Feature: This machine is suitable for grinding inner circle (hole) and outer edge of flat glass. The machine adopts pneumatic up-and-down system grinding stand and gas tank for semi-automatic glass grinding. The worktable uses vacuum glass clamping and its speed can be adjusted by stepless regulating motor. It is easy to operate and highly efficient, ideal for batch product production. Technical Specifications: 1.Outer circle diameter: ø260 ~ ø 1400 mm 2.Inner circle diameter: ø180 ~ ø 480 mm 3.Processed thickness: 4 ~20mm 4.Grinding wheel diameter: ø50 ~ ø 150 mm 5.Total power: 3.2KW 6.Weight: 700 KG 7.Size: 1500(L) x 1000(W) x 1700(H)mm