Bosch GBG 60-20 Professional Notice Originale page 8

OBJ_BUCH-2970-002.book Page 8 Friday, June 9, 2017 3:19 PM
8 | English
Intended Use
The machine is intended for sharpening tools as well as for
grinding and deburring metal.
The machine may only be used for short-time operation
(60 min. max).
Product Features
The numbering of the product features refers to the illustra-
tion of the machine on the graphics page.
1 Cover
2 Clamping nut
3 Clamping flange
4 Mounting flange
5 Grinder spindle
6 Blade guard
7 Mounting holes
8 On/Off switch
9 Open-end spanner *
10 Holder for the spark guard
11 Spark guard
12 Workpiece support
*Accessories shown or described are not part of the standard de-
livery scope of the product. A complete overview of accessories
can be found in our accessories program.
Technical Data
Double-wheeled bench grinder
Article number
Rated power input P1
Output power P2
– 50 Hz
– 60 Hz
Operating Mode *
No-load speed
– 50 Hz
– 60 Hz
Thread of grinder spindle
Grinding wheels
– Diameter
– Width
– Mounting bore
– Grain size
Mounting flange
– Mounting bore
– min. recess
Weight according to EPTA-
Procedure 01:2014
Protection class
The values given are valid for a nominal voltage [U] of 230 V. For differ-
ent voltages and models for specific countries, these values can vary.
* The operating mode S2 (60 min.) designates short-time operation with
a maximum operating duration of 60 minutes. After this period, switch
off the machine and allow it to cool down.
1 609 92A 3C9 | (9.6.17)
Assembly
 Before any work on the machine itself, pull the mains
plug.
– Use suitable screws to fix the power tool to the workbench /
worktop at the 4 holes 7 provided.
Mounting the Spark Guard/Workpiece Support
(see figures A–D)
 Use the power tool only with the spark guard 11 and
swivel the spark guard down as far as possible. Escap-
ing sparks can injure your eyes or set fire to surrounding
objects.
 Use the power tool only with the workpiece support. Do
not interchange the right-hand and left-hand work-
piece supports 12. Otherwise the clearance between
workpiece support 12 and grinding wheel will be too large.
When the clearance is larger, you are not sufficiently pro-
tected against sparking. The workpiece can be drawn in by
the rotational motion of the grinding wheel and lead to in-
juries.
– Mount the holder for the spark guard 10 with the two
screws.
– Screw the spark guard 11 to the holder of the spark guard
10.
– Mount the workpiece support 12 as shown in the figure.
 Regularly check the clearance between the workpiece
support 12 as well as the holder of the spark guard 10
GBG 60-20
to the grinding wheel, and readjust as required. The
clearance to the grinding wheel may not exceed 2 mm.
3 601 B7A 4..
When the clearance is larger, you are not sufficiently pro-
W 600
tected against sparking. The workpiece can be drawn in by
the rotational motion of the grinding wheel and lead to in-
W 420
juries.
W 430
Changing a Grinding Wheel
S2 (60 mins)
 Before any work on the machine itself, pull the mains
-1
min 3000 plug.
-1
min 3600
 The rated speed of the accessory must be at least equal
M 12 to the maximum speed marked on the power tool. Ac-
cessories running faster than their rated speed can break
and fly apart.
mm 200
 Grinding wheels whose diameter exceeds the specifi-
mm 25
cation on the power tool are not permitted.
mm 32
24/60
Replace the grinding wheel when the holder of the spark
guard 10 can no longer be adjusted to the required clearance
mm 15
of 2 mm (max.) to the grinding wheel.
mm 1.5
– Loosen the 3 screws of cover 1 and remove cover 1. Hold
the grinder spindle 5 with open-end spanner 9 and un-
screw the clamping nut 2 from the grinder spindle 5.
kg 16.5
Note: The grinder spindle 5 on the left side of the machine has
/I
a left-hand thread.
– Remove the clamping flange 3 and the grinding wheel from
the grinder spindle 5.
– The new grinding wheel is mounted in reverse order. Place
the cover 1 firmly onto the housing and tighten with the 3
screws.
Bosch Power Tools