7
Grinding wheel
• Before fitting or removing a grinding wheel, switch off the
electricity supply.
• The grinding wheel is hot immediately after grinding. Take care
not to burn your fingers when changing the grinding wheel.
Fit the grinding wheel to the grinding spindle.
The smaller side on the grinding wheel must face away from
the grinding machine. Make sure that the journal of the spindle
is clean and lightly oiled. This will make it easier to remove the
grinding wheel.
If the grinding wheel cannot be removed using hand force only,
make use of the puller supplied with the machine.
Do NOT use impact or excessive force on the spindle or
grinding wheel!
IMPORTANT
Grinding
• Always check that there are no traces of explosive in the
flushing holes of the drill bit. To clean out the flushing holes,
ONLY a wooden stick, a length of copper wire or flushing
water may be used.
• Beware of the risks of fire or explosion that might be initi-
ated by sparks from the grinding work.
DANGER
• Never remove the grinding guard from the machine.
• Make sure that the grinding station or place of work is well
ventilated.
• Always wear goggles, protective clothing, gloves, dust mask
and hearing protection during grinding.
• Before removing or fitting a grinding wheel and before chang-
ing the drill bit, always switch OFF the electricity supply.
• The grinding wheel is hot immediately after grinding. Take care
not to burn your fingers when changing the grinding wheel.
• To prevent injuries caused by crushing, avoid moving parts
when the machine is running.
CAUTION
General rules
Adequate cooling is crucial to the service life of the grinding
wheel, and also to the grinding result. Poor cooling can result in
heat stresses being “ground into“ the cemented-carbide buttons,
with button fracture as a result. The service life of the grinding
wheel falls dramatically if cooling is poor.
Pressing the grinding wheel too hard on to the cemented-carbide
button will reduce the service life of the wheel. Both the grind
-
ing wheel and the cemented-carbide button can be damaged by
excessive heat generation. A new grinding wheel must always be
“run in“. Start grinding carefully and increase the feed pressure
gradually. This practice will increase the service life of the grinding
wheel substantially.
The manufacturer disclaims all responsibility for any prob-
lems (or consequences thereof) attributable to the use of
non-original grinding wheels.
IMPORTANT
Steel removal
In the case of heavy bit wear, one should remove the steel around
the button to obtain maximum service life of the diamond grind-
ing wheel. This is done in the simplest way by means of using the
grinding wheel for removing body steel, alternatively by using a
straight silicon-carbide grinding wheel or by sand-blasting.
To Next Page
Loading...
