... and good accuracy, the surface roughness can reach Ra6.3 ~ Ra3.2, and the aperture is IT9 ~ IT10, and ... lubrication system, electrical system, row chip etc..2.This machine is a horizontal deep hole drilling machine. Machine tools are ... is driven by a feed (z) to the movement.3.Machine's x, y, Z axis are imported ... 10mmDeviation of hole (drill out)0.3/300,0.6/600±0.2~0.6mm/1000mmRoundness of holes0.020. ...