HELPLINE NO 08454 505299
9
ORIGINAL INSTRUCTIONS
defects or cracks. For the resonance test,
let the wheel hang from a piece of string
and tap lightly with a screwdriver handle or
similar (no metal!). If the sound is not clear,
but rather dull and hollow the wheel is likely
to be damaged and should not be used. The
grinding wheel should slide onto the arbor
easily.
Forcing it on the arbor, e.g. by striking with
a hammer, may break the wheel and is
not permissible for safety reasons. For the
same reason the drilling out of too small an
arbor bore is not permitted.
After the new wheel is mounted it should
be left running idle for at least 5 minutes.
Screen off workplace to prevent damage in
case the wheel breaks and stay out of
the danger zone.
8. CHANGING THE GRINDING
WHEEL (See Fig. F)
If the wheel needs replacement because it
is worn down or you want to use a different
type of grinding wheel, the
mounted wheel is to be removed.
Please make sure that the hexagon nut
on the left side of the machine has a lefthanded
thread, i.e. must be turned in a
clockwise direction to undo.
Installation to the right hand side wheel is
similar. (See Fig. F)
4. SIZE OF PART TO BE MACHINED
The part to be machined must at least
be large enough to hold securely in both
hands.
A larger work piece must also be able to
be held securely in and must not slip from
the work piece support during the grinding
process. When selecting the size of the
work pieces, please bear in mind the
grinding capacity of your grinding machine.
5. DRILL GRINDING
The work piece support on the right grinding
wheel is fitted with a trough for drill grinding.
After switching on the double grinding
machine hold the drill to be ground with both
hands and push it into the trough. Then
carefully guide the tip of the drill towards
the grinding wheel and slowly turn the drill
throughout the entire grinding process.
6. SELECTING A SUITABLE
GRINDING WHEEL
This double bench grinder is factory
fitted with two different normal corundum
grinding wheels. On one side a wheel with
a coarse grit is mounted, on the other side
a fine grit grinding wheel. As a rule, the
bulk of the arising grinding works such as
the grinding of various axes, drill bits and
screw drivers can be accomplished with this
grinding wheel. For other jobs, especially
the sharpening of knifes as well as the
machining of hardened steel, a suitable
grinding wheel according to the table should
be selected. Please keep in mind that there
is no grinding wheel type suitable for all
different requirements and the choice of the
right grinding wheel is critical for the result
of your work.
7. GRINDING WHEEL CHECK
(See Fig. E)
Before a new grinding wheel is mounted it
should be subjected to a visual inspection
and a resonance test, to detect any possible
Fig. E