The cast-iron spindle units slide along the bridge on guides in an oil bath, perfectly protected from water.
The spindle positioning is automated, motorized by a screw with lead nuts connected to an electromagnetic clutch and adjusted sequentially for each single spindle unit. Once each spindle has reached the programmed position, it is blocked by a hydraulic mechanism. A pneumatic device can exclude each spindle unit vertically.
On request, the machine can be supplied in a special version with simultaneous positioning of all the spindles instead of sequential adjustment of each single spindle.
