... ~4 m/minTraverse per turn of hand wheel6 mm6 mmWorkhead spindle speed28, 43, 73, 110, 184, 277 rpm28, 43, 73, ... 110, 184, 277 rpmWorkhead spindle hole taperNo.4 MorseNo.4 MorseWorkhead chuck165 mm () Three160 mm ... )400X50X203 mm400X50X203 mmMax.peripheral speed of grinding wheel35 m/s35 m/sSpindle speed of internal grinding wheel1000 mm1500 mmFlow rate of cooling pump25 ...