... 3.High-accuracy 4.ATC spindle 4 Axis Aluminum Machining Center RC1230SA The spindle can rotate 180 degree ... launder, taping, milling, mounting hole, locking hole and other slots for diversified curtain walls and aluminum doors and windows. ... beam6FrameWelded structure7Y StructureRack and Pinion Drive, Hiwin Rail Linear Bearings8X, Z StructureHiwin Rail Linear Bearings and Ball Screw9Max. Power ...