14 Service and Maintenance
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will thus contribute to a long service life of the guide and a good mechanical condition of
the machine.
To properly apply the lubricant, use an oil can or a lint-free cloth saturated with oil or
grease. Please treat the guides and all moving and blank parts in the same manner.
Please also comply with the instructions of the lubricant manufacturers!
14.5. Adjusting the play of the guides
Even if the guides are regularly oiled, cleaned and properly adjusted, the guides will
show play after some time.
1. Release the counter nuts 1 (Fig. 18) of the adjusting screws for upper carriage 2,
turn in all adjusting screws 3 evenly until the play is eliminated and then retighten
the counter nuts.
2. Repeat the same procedure for the cross slide 4. Note: The guide can be
clamped with the help of screw 5.
3. Turn the machine upside down and unscrew the threaded pin 1 (Fig. 19)
somewhat.
4. Lightly retighten clamping screws 2 to reduce play.
5. Check if the support can still be moved easily. The drive motors could stall if the
support is too stiff. These will then emit "peeping" noises. In this case, increase
play somewhat.
14.6. Main spindle
The bearing assembly of the spindle through 2 taper rolling bearings is maintenance-
free for at least 6,000 hours at minimum speed and 1,800 hours at maximum speed. If
there is slight play after this period has elapsed, a specialist can readjust the bearings.
The CNC machine should always be in a clean condition, i.e. carefully cleaned after
every working stage.
Some elements affect the precision and work safety and must therefore be checked
regularly. Here the following checklist for this purpose:
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