Bosch DBH 740 R Notice Originale page 15

OBJ_BUCH-2092-002.book Page 15 Thursday, February 23, 2017 11:46 AM
5 Mode selector switch
6 On/Off switch
7 Connection socket at air intake
8 Air outlet with silencer
9 Hose fitting
10 Auxiliary handle
11 Depth stop
12 Hose clamp
13 Supply-air hose
14 Securing screw for key type drill chuck*
15 Key chuck*
16 SDS-plus adapter shank for drill chuck*
*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
Pneumatic rotary hammer
Article number
Rotational speed under load,
max. min
Impact rate min
Output power
Drilling diameter, max.:
– Concrete
– Steel
– Wood
Tool holder
Max. working pressure for tool
Thread size of hose connection
Inner diameter of hose
Air consumption at no-load
Weight according to EPTA-
Procedure 01:2014
Noise/Vibration Information
Measured sound values determined according to
EN ISO 15744.
Typically the A-weighted noise levels of the pneumatic tool
are: Sound pressure level 89 dB(A); sound power level
100 dB(A). Uncertainty K=3 dB.
Wear hearing protection!
Vibration total values a (triax vector sum) and uncertainty K
h
determined according to EN 28927:
Hammer drilling in concrete: a =5 m/s
h
2 2
Chiselling: a =6 m/s , K=1.1 m/s ,
h
2
Drilling in metal: a <2.5 m/s , K=1.5 m/s
h
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:
Bosch Power Tools
EN ISO 11148 according to the provisions of the directive
2006/42/EC.
Technical file (2006/42/EC) at:
Robert Bosch Power Tools GmbH, PT/ECS,
70538 Stuttgart, GERMANY
Henk Becker
Executive Vice President
Engineering
Robert Bosch Power Tools GmbH
70538 Stuttgart, GERMANY
Stuttgart, 01.01.2017
Assembly
Auxiliary Handle (see figure A)
For safety reasons, the pneumatic tool must only be used with
0 607 557 501
mounted auxiliary handle 10.
The auxiliary handle 10 can be set to any position for a secure
-1
850
and low-fatigue working posture.
-1
3900
– Turn the wing bolt for adjustment of the auxiliary handle 4
in anticlockwise direction and set the auxiliary handle 10
W 740
to the required position. Then tighten the wing bolt 4 again
in clockwise direction.
mm 20
mm 13
Exhaust-air Guidance
mm 30
With exhaust-air guidance, the exhaust air can be diverted
SDS-plus
through an exhaust-air hose away from your workplace, while
bar 5
at the same time achieving optimal sound-proofing. Addition-
ally, your working conditions are improved, as your workplace
psi 72.5
can no longer be contaminated though oil-containing air and
G 1/4"
dispersed dust or chips.
mm 13
– Unscrew the silencer at air outlet 8 and replace it with a
l/s 15
hose fitting 9.
cfm 31.8
– Loosen hose clamp 12 of the exhaust-air hose , mount the
exhaust-air hose to hose fitting 9 and retighten the hose
kg 3.0
clamp.
lbs 6.6
Connecting the Air Supply (see figure B)
 Ensure that the air pressure is not lower than 5 bar
(72.5 psi) because the pneumatic tool is designed for
this operating pressure.
For maximum performance, the values for the inner hose di-
ameter as well as the connection threads must be adhered to
as listed in the "Technical Data" Table. To maintain the full
performance, only use hoses with a maximum length of 4 m.
The compressed air supplied should be free of foreign materi-
2 2
, K=1.0 m/s ,
al and moisture to protect the tool from damage, contamina-
tion, and the formation of rust.
2
.
Note: The use of a compressed-air maintenance unit is neces-
sary. This ensures proper function of the pneumatic tools.
Observe the operating instructions of the maintenance unit.
All fittings, connecting lines and hoses must be dimensioned
for the pressure and the required air volume.
English | 15
Helmut Heinzelmann
Head of Product Certification
PT/ECS
1 609 92A 33X | (23.2.17)