OKUMA CNC lathe LB4000 EX II M * 1500 machining a long shaft with thread without steady rest.
Perfect thread and surface quality without vibration in long shaft machining with Variable Speed Control- Variable Speed Threading function.
Material is C45 dimenions dia 150mm * 1500mm.
Cutting ap=6mm , f=0.5mm/rev
V=75mm/min , ap=0.1mm , pitch =6mm

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