3 - 30 Machine Maintenance 704-0212-209 VM Series Maintenance and Safety Manual
Trunnion Table
A Trunnion table is standard equipment on VM10U machining centers. During the
execution of a part program, the Trunnion table is capable of rotating 360
° in the C-axis
and tilting in the A-axis -30
° to +110°.
Inspect the Clamping System Pneumatic Lines
Daily or every 8 hours of operation: Check the Trunnion table (if equipped) clamping
system’s incoming pneumatic lines for leaking, cracking, or kinks.
If the incoming pneumatic lines are exposed to the working environment, ensure the
lines are free of damage from chips and are not twisted or bent.
Maintain the Clamping System’s Oil Level
Weekly or every 40 hours of operation: Check the oil level for the clamping system (if
equipped).
1. Open the access door on the right side of the machine.
2. Check the level of the oil in the sight gauge located on the side of the booster
cylinder. The oil sight gauge level should be half-filled with oil.
3. If the oil level is low, add oil to the reservoir bowl until the oil sight gauge level
is half-filled with oil. See Lubrication, on page 3 - 5 for recommended oil
types.
4. Close the ATC access door.
Oil Drip Rate for C-Axis Clamp/Unclamp
The Trunnion table C-axis clamping system is factory set at 1 drop per 8-10 clamp/
unclamp cycles.The drip rate adjustment knob is located on the right hand side of the C-
axis.
If the drip rate needs to be adjusted, turn the drip rate adjustment knob so the indicator
lines up with one of the numbers 8, 9 or10 at the base of the knob.
Disassembling the Trunnion table or any component of the table may
cause irreparable damage and void your Hurco warranty. Contact a
Hurco-certified Service Engineer to service the Trunnion table.
Some machine models have a cover for the clamping system. For
those machines, remove the cover to access the drip rate
adjustment knob.
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