Noise/Vibration Information; Technical Data - Bosch GCB 120 Professional Notice Originale

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OBJ_BUCH-2519-001.book Page 9 Friday, June 12, 2015 12:34 PM

Noise/Vibration Information

Sound emission values determined according to
EN 60745-2-20.
Typically the A-weighted noise levels of the product are:
Sound pressure level 86 dB(A); Sound power level 97 dB(A).
Uncertainty K =3 dB.
Wear hearing protection!
Vibration total values a (triax vector sum) and uncertainty K
h
determined according to EN 60745-2-20:
2
Cutting metal: a =1.8 m/s , K=1.5 m/s
h
The vibration 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 anoth-
er. It may be used for a preliminary assessment of exposure.
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 insertion tools or is
poorly maintained, the vibration emission may differ. This
may significantly increase 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
period.
Identify additional safety measures to protect the operator
from the effects of vibration such as: maintain the tool and the
accessories, keep the hands warm, organisation of work pat-
terns.

Technical Data

Band Saw
Article number
Rated power input
No-load speed
Saw blade dimensions
Weight according to
EPTA-Procedure 01:2014
Protection class
Permissible workpiece dimensions (maximum/minimum) see page 11.
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.
Only for EC countries:
Declaration of Conformity
We declare under our sole responsibility that the product de-
scribed under "Technical Data" is in conformity with all rele-
vant provisions of the directives 2009/125/EC (Regulation
1194/2012), 2011/65/EU, until 19 April 2016:
2004/108/EC, from 20 April 2016 on: 2014/30/EU,
2006/42/EC including their amendments and complies with
the following standards: EN 60745-1, EN 60745-2-20.
Technical file (2006/42/EC) at:
Robert Bosch GmbH, PT/ETM9,
70764 Leinfelden-Echterdingen, GERMANY
Bosch Power Tools
Henk Becker
Executive Vice President
Engineering
Robert Bosch GmbH, Power Tools Division
70764 Leinfelden-Echterdingen, GERMANY
Leinfelden, 02.06.2015
2
Assembly
 Avoid unintentional starting of the machine. During as-
sembly and for all work on the machine, the power plug
must not be connected to the mains supply.
Inserting/Replacing the Band-saw Blade
 Always wear protective gloves when mounting the
band-saw blade. Danger of injury when touching the
band-saw blade.
 Always wear safety goggles. Safety goggles will reduce
the risk of injuries.
Selecting a Band-saw Blade
An overview of recommended band-saw blades can be found
at the end of these instructions.
Inserting/Replacing the Band-saw Blade
(see Fig. A1 – A4)
– Swing the lever 15 by 180° to release the pre-
tension on the band-saw blade 12.
– Unscrew the two cross-head screws 16 and fold up the
GCB 120
cover 17.
3 601 M36 0..
– Freehand cutting: Guide the band-saw blade 12 step by
step between the saw blade guides 18. The back of the saw
W 850
blade must touch the bearings in the lower part of the saw
-1
min 61–230
blade guides 18.
mm 1140 x 12.7 x 0.5
Cutting close to walls: Place the band-saw blade 12 step
by step in front of the saw blade guides 19. The back of the
kg 6.4
saw blade must touch the bearings in the lower part of the
saw blade guides 19.
/II
– Guide the band-saw blade 12 step by step around the two
rollers 20.
– Swing the lever 15 by 180° to tension the
band-saw blade 12.
– Check whether the band-saw blade 12 is positioned cor-
rectly around both rollers 20. Fold down the cover 17 and
tighten both cross-head screws 16.
 Check that the band-saw blade 12 is seated correctly.
Switch the power tool on and off two or three times to
ensure that the band-saw blade is running correctly in
the saw blade guides. If the band-saw blade is not mount-
ed correctly, it can come undone and injure you.
English | 9
Helmut Heinzelmann
Head of Product Certification
PT/ETM9
1 609 92A 19N | (12.6.15)