Bosch Professional GWS 670 Original Instructions Manual page 19

Protective guard for cutting
Always use the protective guard for cutting (11) when
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cutting with bonded abrasives.
Provide sufficient dust extraction when cutting stone.
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The protective guard for cutting (11) is fitted in the same
way as the protective guard for grinding (6).
Extraction guard for cutting with a guide block
The extraction guard for cutting with a guide block (18) is fit-
ted in the same way as the protective guard for grinding (6).
Side handle
Do not operate your power tool without the side
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handle (3).
Screw the side handle (3) on the left or right of the machine
head depending on how your are working.
Low-vibration auxiliary handle
ably.
Do not make any alterations of any kind to the auxili-
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ary handle.
Do not continue to use a damaged auxiliary handle.
Hand guard
Always fit the hand guard (13) when working with the
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rubber sanding plate (14) or with the cup brush/disc
brush/flap disc.
Attach the hand guard (13) to the side handle (3).
Fitting the Abrasive Tools
Pull the plug out of the socket before carrying out any
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work on the power tool.
Do not touch grinding and cutting discs until they have
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cooled down. The discs can become very hot while work-
ing.
Clean the grinding spindle (4) and all the parts to be fitted.
Lock the grinding spindle with the spindle lock button (1)
before clamping and releasing the abrasive tools.
Do not press the spindle lock button while the grind-
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ing spindle is moving. The power tool may become dam-
aged if you do this.
Grinding/cutting disc
Pay attention to the dimensions of the abrasive tools. The
diameter of the hole must match that of the mounting flange.
Do not use an adapter or reducer.
When using diamond cutting discs, ensure that the arrow in-
dicating the direction of rotation on the diamond cutting disc
matches the direction of rotation of the power tool (see the
direction of rotation arrow on the machine head).
See the graphics page for assembly instructions.
To fasten the grinding/cutting disc, screw on the clamping
nut (9) and tighten with the two-hole spanner .
Bosch Power Tools
The low-vibration auxiliary
handle reduces vibration,
enabling the tool to be used
safely and more comfort-
After fitting the abrasive tool, check that the abrasive
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tool is fitted correctly and can turn freely before
switching on the power tool. Make sure that the abras-
ive tool does not brush against the protective guard or
other parts.
Mounting flange for grinding spindle M10:
The mounting flange can be used on both sides.
Flap disc
Always fit the hand guard (13) when working with the
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flap disc.
Rubber sanding pad
Always fit the hand guard (13) when working with the
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rubber sanding pad (14).
See the graphics page for fitting instructions.
Screw on the round nut (16) and tighten with the two-pin
spanner.
Cup brush/disc brush
Always fit the hand guard (13) when working with the
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cup brush or disc brush.
See the graphics page for fitting instructions.
The cup brush/disc brush must be screwed onto the grinding
spindle until it rests firmly against the grinding spindle flange
at the end of the grinding spindle thread. Tighten the cup
brush/disc brush with an open-ended spanner.
Approved abrasive tools
You can use all the abrasive tools mentioned in these operat-
ing instructions.
-1
The permissible speed [min ] or the circumferential speed
[m/s] of the abrasive tools used must at least match the val-
ues given in the table.
It is therefore important to observe the permissible rota-
tional/circumferential speed on the label of the abrasive
tool.
Max. [mm]
D b
100 6
115 6
125 6
100 –
115 –
125 –
70 30
75 30
Rotating the machine head
Pull the plug out of the socket before carrying out any
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work on the power tool.
English | 19
[mm]
-1
d [min ] [m/s]
16.0 12,000 80
22.2 12,000 80
22.2 12,000 80
– 12,000 80
– 12,000 80
– 12,000 80
M 10 12,000 45
M 14 12,000 80
1 609 92A 3SR | (02.06.2021)