Berner 043564, Original Instructions Manual

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English | 23
1 609 92A 0ER • 26.11.13
 Actuate the spindle lock button only when the
grinder spindle is at a standstill. Otherwise, the
machine may become damaged.
Grinding/Cutting Disc
Pay attention to the dimensions of the grinding
tools. The mounting hole diameter must fit the
mounting flange without play. Do not use reducers
or adapters.
When using diamond cutting discs, pay attention
that the direction-of-rotation arrow on the diamond
cutting disc and the direction of rotation of the ma-
chine (see direction-of-rotation arrow on the ma-
chine head) agree.
See graphics page for the mounting sequence.
To fasten the grinding/cutting disc, screw on the
clamping nut 10 and tighten with the two-pin span-
ner; see Section “Quick-clamping Nut ”.

After mounting the grinding tool and before
switching on, check that the grinding tool is
correctly mounted and that it can turn freely.
Make sure that the grinding tool does not
graze against the protection guard or other
parts.
An O-ring (plastic part) is inserted
in the mounting flange 8 around
the centring collar. If the O-ring
is missing or is damaged, it
must in all cases be replaced be-
fore the mounting flange 8 is
mounted.
Flap Disc
 For operations with the rubber sanding plate
16 or with the cup brush/wheel brush/flap
disc, always mount the hand guard 15.
Rubber Sanding Plate

For operations with the rubber sanding plate
16 or with the cup brush/wheel brush/flap
disc, always mount the hand guard 15.
See graphics page for the mounting sequence.
Screw on the round nut
18 and tighten with the
two-pin spanner.
Cup Brush/Disc Brush

For operations with the rubber sanding plate
16 or with the cup brush/wheel brush/flap
disc, always mount the hand guard 15.
See graphics page for the mounting sequence.
The cup brush/disc brush must be able to be
screwed onto the grinder spindle until it rests firmly
against the grinder spindle flange at the end of the
grinder spindle threads. Tighten the cup
brush/disc brush with an open-end spanner.
Quick-clamping Nut
For convenient changing of grinding tools without
the use of additional tools, you can use the quick-
clamping nut 11 instead of the clamping nut 10 .
 The quick-clamping nut 11 may be used only
for grinding or cutting discs.
 Use only a flawless, undamaged quick-clamp-
ing nut 11.
 When screwing on, pay attention that the side
of the quick-clamping nut 11 with printing
does not face the grinding disc; the arrow
must point to the index mark 23.
Lock the grinder spindle
with the spindle lock but-
ton 2 . To tighten the
quick-clamping nut, firm-
ly turn the grinding disc
in clockwise direction.
A properly attached, un-
damaged quick-clamp-
ing nut can be loosened
by hand when turning
the knurled ring in anti-
clockwise direction.
Never loosen a tight
quick-clamping nut with
pliers. Always use the
two-pin spanner. Insert
the two-pin spanner as
shown in the illustration.
Approved Grinding Tools
All grinding tools mentioned in these operating in-
structions can be used.
The permissible speed [min
-1
] or the circumferen-
tial speed [m/s] of the grinding tools used must at
least match the values given in the table.
Therefore, observe the permissible
rotational/cir-
cumferential speed on the label of the grinding
tool.
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