EURO • Printed in Germany • BA 1 619 929 474 • GBH 3-28 E • GB • OSW 02/01
English - 1
1 619 929 474 • TMS • 05.02.01
Measured values determined according to
EN 50 144.
Typically the A-weighted noise levels of the prod-
uct are: sound pressure level: 87 dB (A); sound
power level: 100 dB (A).
Wear ear protection!
The typical weighted acceleration is 13 m/s
2
.
1 Dust protection cap
2 Locking sleeve
3 Mode selector switch
4 On/Off switch
5 Auxiliary handle
6 Depth stop
Not all of the accessories illustrated or described are
included as standard delivery.
Working safely with this ma-
chine is possible only when the
operating and safety information
are read completely and the in-
structions contained therein are
strictly followed. In addition, the
general safety instructions in the
enclosed booklet must be fol-
lowed. Before using for the first
time, ask for a practical demon-
stration.
If the mains cable is damaged or
cut through while working, do not
touch the cable but immediately
pull the mains plug. Never use the
machine with a damaged cable.
Wear ear protection.
Wear safety glasses and sturdy
shoes.
■
For long hair, wear hair protection. Work only
with closely fitting clothes.
■
During pauses in the work, when not in use or
during work on the machine itself (e. g. chang-
ing the working tools, repairs, cleaning, adjust-
ment), pull the mains plug.
■
Always direct the cable to the rear away from
the machine.
■
Insert the mains plug only when the machine is
switched off.
■
Always switch off the machine and allow to
come to a stop before placing it down.
■
Use the machine only with the auxiliary han-
dle 5.
■
When working with the machine, always hold it
firmly with both hands and provide for a secure
stance.
■
Connect machines that are used in the open
via a residual current device (RCD) with an ac-
tuating current of 30 mA maximum. Use only
extension cables that are approved for outdoor
use.
■
Never allow children to use the machine.
■
Bosch is only able to ensure perfect function-
ing of the machine if the original accessories
intended for it are used.
Tool Specifications
Rotary Hammer
GBH 3-28 E
Part number
0 611 239 7..
Rated power
720 W
Output power
400 W
Rated speed
0 – 800 rpm
Impact rate
0 – 4000 bpm
Impact energy per stroke
3.3 J
Tool holder
SDS-plus
Spindle neck diameter
Ø 56 mm
Drilling output:
- Concrete (Twist drill bit)
max. 28 mm
- Masonry (Core bit)
max. 80 mm
- Wood
max. 30 mm
- Steel
max. 13 mm
Weight (without
optional extras) approx.
3.3 kg
Safety class
/ II
Noise/Vibration Information
Machine Elements
For Your Safety
GBH 3-28 (474) - Buch Seite 1 Donnerstag, 8. Februar 2001 8:35 08