Bosch GBH 4-32 DFR Professional Original Operating Instructions page 9

OBJ_BUCH-411-001.book Page 9 Friday, July 13, 2007 8:09 AM
Technical Data
Rotary Hammer
Article number
Rated power input
Rated speed
Impact rate
Impact energy per
stroke
Chisel positions
Tool holder
Lubrication
Max. drilling dia.
– Concrete (with twist
drill)
– Brickwork (with core
bit)
– Steel
– Wood
Weight according to EP-
TA-Procedure 01/2003
Protection class
The values given are valid for nominal voltages [U] of
230/240 V. For lower voltages and models for specific
countries, these values can vary.
Please observe the article number on the type plate of
your power tool. The trade names of individual tools
may vary.
Assembly
Before any work on the power tool itself,
pull the mains plug.
Auxiliary Handle
Operate your power tool only with the auxil-
iary handle 10.
The auxiliary handle 10 can be set to any position
for a secure and low-fatigue working posture.
Bosch Power Tools
Turn the bottom part of the auxiliary handle 10 in
counterclockwise direction and swivel the auxil-
iary handle 10 to the desired position. Then re-
GBH 4-32 DFR
tighten the bottom part of the auxiliary handle 10
Professional
by turning in clockwise direction.
3 611 C32 0..
Adjusting the Drilling Depth (see figure A)
3 611 C32 1..
The required drilling depth X can be set with the
W 900
depth stop 11.
rpm 0–760
Press the button for the depth stop adjustment 9
and insert the depth stop into the auxiliary han-
bpm 0–3600
dle 10.
Insert the SDS-plus drilling tool to the stop into
J 5.0
the SDS-plus tool holder 1. Otherwise, the mov-
12
ability of the SDS-plus drilling tool can lead to in-
SDS-plus
correct adjustment of the drilling depth.
Central
Pull out the depth stop until the distance be-
permanent
tween the tip of the drill bit and the tip of the
lubrication
depth stop correspond with the desired drilling
depth X.
The knurled surface of the depth stop 11 must
mm 32 face downward.
mm 90
Selecting the Tool Holder
mm 13
For hammer drilling, SDS-plus drilling tools that
mm 32
can be inserted into the SDS-plus tool holder 1
are required.
kg 4.7
For drilling without impact in wood, metal, ce-
/ II
ramic and plastic as well as for screwdriving and
tapping, use non-SDS-plus drilling tools (e. g.,
drill bits with cylindrical shank). A keyless drill
chuck is required for such drilling tools.
Note: Do not use tools without SDS-plus for ham-
mer drilling or chiseling! Tools without SDS-plus
and their drill chucks are damaged by hammer
drilling or chiseling.
The SDS-plus tool holder 1 can easily be exchanged
against the quick change keyless chuck 12.
Changing the Tool Holder
Dismounting the SDS-plus Tool Holder or the
Keyless Replacement Chuck (see figure B)
Pull the lock ring of the tool holder 4 firmly in the
direction of the arrow, hold it in this position and
pull off the tool holder 1 or the keyless replace-
ment chuck 12 toward the front.
English | 9
1 619 929 755 | (13.7.07)