Operation Manual

12 | English
3 609 929 C27 | (2.3.12) Bosch Power Tools
Product Features
The numbering of the product features refers to the illustra-
tion of the machine on the graphics page.
1 Collet
2 Clamping nut
3 Grinder spindle
4 Spindle collar
5 On/Off switch
6 Lock-off button for On/Off switch
7 Handle (insulated gripping surface)
8 Open-end spanner on the grinder spindle*
9 Open-end spanner applied to clamping nut*
*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
Noise/Vibration Information
Measured sound values determined according to EN 60745.
Typically the A-weighted noise levels of the product are:
Sound pressure level 80 dB(A); Sound power level 91 dB(A).
Uncertainty K =3 dB.
Wear hearing protection!
Vibration total values a
h
(triax vector sum) and Uncertainty K
determined according to EN 60745:
Surface grinding (with wheel diameter of 25 mm):
a
h
=6.0m/s
2
, K=1.5 m/s
2
.
Surface grinding (with wheel diameter of 50 mm):
a
h
=20.0 m/s
2
, K=1.5 m/s
2
.
The vibration emission level given in this information sheet
has been measured in accordance with a standardised test
given in EN 60745 and may be used to compare one tool with
another. It may be used for a preliminary assessment of expo-
sure.
The declared vibration emission level represents the main ap-
plications of the tool. However if the tool is used for different
applications, with different accessories or poorly maintained,
the vibration emission may differ. This may significantly in-
crease the exposure level over the total working period.
An estimation of the level of exposure to vibration should also
take into account the times when the tool is switched off or
when it is running but not actually doing the job. This may sig-
nificantly reduce the exposure level over the total working pe-
riod.
Identify additional safety measures to protect the operator
from the effects of vibration such as: maintain the tool and the
accessories, keep hands warm, organise work patterns.
Declaration of Conformity
We declare under our sole responsibility that the product de-
scribed under “Technical Data” is in conformity with the fol-
lowing standards or standardization documents: EN 60745
according to the provisions of the directives 2011/65/EU,
2004/108/EC, 2006/42/EC.
Technical file (2006/42/EC) at:
Robert Bosch GmbH, PT/ETM9,
D-70745 Leinfelden-Echterdingen
Robert Bosch GmbH, Power Tools Division
D-70745 Leinfelden-Echterdingen
16.02.2012
Assembly
f Before any work on the machine itself, pull the mains
plug.
Mounting the Grinding Tools (see figure A)
f Only use properly fitting and undamaged open-end
spanners (see “Technical Data”).
– Clean the grinder spindle 3 and all parts to be mounted.
– Hold the grinder spindle 3 with open-end spanner 8 by the
spanner flats.
Loosen the clamping nut 2 with open-end spanner 9 by ap-
plying it to the spanner flats and turning in anticlockwise
direction.
– Insert the clamping shaft of the grinding tool to the stop in-
to the collet chuck 1.
– Hold the grinder spindle 3 firmly with open-end spanner 8
and clamp the tool bit with open-end spanner 9 by the
spanner flats, turning in clockwise direction.
The grinding tools must run completely concentrical. Do not
continue to use out-of-round grinding accessories, instead,
replace before continuing to work.
f Do not tighten the collet chuck of the clamping nut as
long as no grinding accessory is mounted. Otherwise,
the collet chuck can become damaged.
Straight grinder GGS 28 LP
Article number
3 601 B25 0..
Rated power input
W500
Output power
W280
Rated speed
min
-1
29000
Collet chuck diameter, max.
mm 8
Spanner size of
–clamping nut
– grinder spindle
mm
mm
19
13
Spindle collar dia.
– with rubber cap
– without rubber cap
mm
mm
38
34
Thickness of grinding wheels, max.
mm 32
Grinding tool diameter, max.
mm 40
Weight according to
EPTA-Procedure 01/2003
kg 1.7
Protection class
/II
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.
Dr. Egbert Schneider
Senior Vice President
Engineering
Helmut Heinzelmann
Head of Product Certification
PT/ETM9
OBJ_BUCH-1580-002.book Page 12 Friday, March 2, 2012 12:19 PM