... -automatic hack saw machine G7125, GL7132, GL7140, GL7150 With clamping feeding device, Automatic cutting process and with safety protection device.Hydraulic transmission ... range.2. Arc push sawing: with high cutting efficiency of 1.5 times higher than normal hack saw machine.3. New V- ... (Dmax=220)45° (Dmax=220)45° (Dmax=300) Frequency of sawing bow reciprocationTime/min75;90;10843,50,60,86,100,12034 ...