... .9. rackingServo motor driven, man 2-inch racking in left or right, 1/2,1/4,3 ... loop(add, minus needle)11. sitch densityStepping motor driven,24 selectable levels, the stitch cam ... program setting14. Take up DeviceMain roller , moment motor controlled, 24 selectable levels, each level has ... waste pieces17. Drive SystemBelt-driven,AC servo motor driven without limits18. Stop MotionAll necessary devices ...