The spindles of the Multibreton DX machine are individual working units powered by a 7,5 kW motor. One spindle unit remains fixed whilst the other ones can be adjusted on the spindle-holding bridge.
The spindle units slide along the bridge on special guides in an oil bath protected by a water-labyrinth covers. The extremely precise positioning of the spindle units on the bridge is performed manually; a graduated scale equipped with magnifying lens indicates the height of each spindle. On request, the machine can be supplied with motorized sequential adjustment of the spindles with control from a push button panel. After the spindles have been positioned, they are locked in place by a hydraulic mechanism. Each spindle unit can be excluded vertically by a pneumatic device. During the bridge return cycle, when the cut has been performed, all the spindle units are automatically excluded in height so that the diamond blades do not pass again through the same kerf.