CNC lathe Back Feeding for Shaft Parts CNC lathe with axial division,CNC lathe with feeding device supplier Q series-precise linear guide-way with flat bed in blade row : Q5ï¼?Q7ï¼?Q5Cï¼?Q7C  Q5 ,Q7, with the features of high precision. high speed. high efficiency, is the ideal selection for substituting hard rail lathes and imported lathes. * High precision : importing components from Japan and Taiwan through the advanced assembly and inspection technology, realizing the  precise turning with tolerance of  μ level. * High speed : more than 5000RPM for spindle ,rapid traverse 20m/s, to reach the high speed machining.  *High-efficiency : with the concept of technique innovation and application oriented, and sustainability improve the overall performance, to make the processing more efficiency. * Stability : high quality requirement  and strict selecting for all the components, to make the machine performance more stable. Q5C,Q7C, (Synchronous electric spindle)- the best selection for substituting the imported lathes. * More precision: the complete Synchronous servo configuration for the spindle and the X/Z axis, makes the processing accuracy get a new break through. * Higher speed: the superior Synchronous electric spindle make the spindle perform higher, faster, and more stable. * More efficiency: the complete, Synchronous control for the core parts (all the axis),makes the processing efficiency better. In this technical solution,we use customized back feeding device to combine the precise Q series CNC lathe to realize the processing of  relatively long  shafts or such kind of  work pieces. Main parameters UNIT Q5 Q7 Q5C Q7C Capability Max.swing diameter mm 400/98 400/98 400/98 400/98 Max.turning  length mm 200 300 200 300 Max.bar through-hole mm 20(25) 26ï¼?35ï¼? 20(25) 26ï¼?35ï¼? Axis Stroke X-axistravel mm 280 320 280 320 Z-axistravel mm 240 315 240 315 Rapid  Traverse X/Z-axis m/min 20 20 20 20 Spindle Spindle nose size N/A A2-4 A2-5 A2-4 A2-5 Spindlethrough holediameter mm 35ï¼?37ï¼? 48 35ï¼?37ï¼? 48 Spindle servo motor power kW (asynchronous) 2.2/3.7 (asynchronous) 3.7/5.5 synchronous electric spindle synchronous electric spindle Spindle speed range rpm 0ï½?5000 0ï½?5000 0ï½?6000 0ï½?6000 Work piece clamping method N/A homemade collet homemade collet homemade collet homemade collet