To provide a turret dividing device capable of performing dividing by rotating a turret head for retaining a tool by a simple constitution, attaining rotation driving of the tool on the turret, and further feeding a lubricant to a gear mechanism.

In the turret dividing device 1, a cylindrical linear movement body 3 for advancing the turret head 5 when dividing of the turret head 5 is performed is extended in an axial L direction, and the turret head 5 is rotatably supported on a distal end side of the cylindrical linear movement body 3. At the dividing, turning of the turret head 5 is suppressed by using a two-piece type coupling 6 provided with a fixed coupling element 66 and a movable coupling element 61. Since the cylindrical linear movement body 3 is extended to a position near a driving bevel gear 45 and a driven bevel gear 48, a lubricant feeding passage 30 is formed on the cylindrical linear movement body 3.