Mazak VTC-160A, Maintenance Manual, Page: 32 / 96

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9. Air unit
An external air source is connected to the air unit to supply the pressure-regulated air to operate
pneumatic actuators.
Refer to 5-5-3 "Pneumatic Circuit Diagram".
The air unit consists of a filter (with automatic drain system), regulator (reducing valve), shut-off
valve, etc.
10. Centralized lubrication unit
Lubricating oil is supplied to the spindle bearings, the ball screws and the linear guides.
Refer to 5-6-3 "Lubrication Circuit Dagram".
By the intermittent operation (in intervals of 8 minutes) of the pump, lubricating oil is supplied to the
each lubricating point automatically.
11. Spindle cooling unit
A trochoid pump is used to draw cooling fluid from the tank and feeds it to the outer casing of the
spindle. Cooling fluid absorbs heat from the spindle and is cooled by the radiator and the fan;
cooled oil is then circulated to the tank.
Refer to 5-7-3 "Spindle Cooling Circuit Diagram".
12. Coolant system
A coolant pump is used to feed coolant, pumped from the coolant tank, to coolant nozzles.
Coolant has two functions; to cool cutting tools and to wash away chips.
13. Control panel
Control units (spindle driver unit, servo control unit, NC unit, etc.) and control circuits are housed in
the electrical control cabinet.
14. NC unit
Machine operation is controlled by the NC unit. It also has the function to diagnose the machine
status.
Refer to 5-10 "NC Unit and Electrical Control Cabinet".
15. Covers
Covers are provide to prevent chips generated during machining from scattering outside the
machine or entering the slideway surfaces as well as to protect operators from hazards.
Also, the machine has an ATC cover which automatically opens and closes for the execution of
automatic tool change operation.
16. Machine light
One fluorescent tubes are used to light inside the machine.
17. Safety devices
Refer to 2-9 "Safety Equipment".
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