Bosch GBH 3-28 E Operating Instructions Manual page 8

OBJ_BUCH-391-001.book Page 8 Thursday, May 3, 2007 9:19 AM
Technical Data
Rotary Hammer
Article number
Rated power input
Rated speed
Impact rate
Impact energy per stroke
Tool holder
Max. drilling dia.
– Concrete (with twist drill)
– Brickwork (with core bit)
– Steel
– Wood
Weight according to EPTA-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.
Product Features
The numbering of the product features refers to the
illustration of the power tool on the graphics page.
1 SDS-plus tool holder
2 Dust protection cap
3 Locking sleeve
4 Lock ring of the tool holder (GBH 3-28 FE)
5 Button for depth stop adjustment
6 Selector switch for drilling/hammer drilling
7 On/Off switch
8 Auxiliary handle
9 Depth stop
10 Securing screw for key type drill chuck*
11 Key-type drill chuck*
12 SDS-plus adapter shank for drill chuck*
13 Quick change keyless chuck (GBH 3-28 FE)
14 Front sleeve of the quick change keyless chuck
(GBH 3-28 FE)
15 Retaining ring of the quick change keyless chuck
(GBH 3-28 FE)
16 Extraction sleeve of the dust extraction
attachment*
17 Clamping screw for the dust extraction
attachment*
18 Depth stop of the dust extraction attachment*
19 Telescopic pipe of the dust extraction
attachment*
20 Wing bolt of the dust extraction attachment*
21 Guide pipe of the dust extraction attachment*
*The accessories illustrated or described are not
included as standard delivery.
8 | English
GBH 3-28 E
Professional
0 611 239 7..
W 720
rpm 0–800
bpm 0–4000
J 3.3
SDS-plus
mm 28
mm 80
mm 13
mm 30
kg 3.3
/II
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 8.
The auxiliary handle 8 can be set to any position for a
secure and low-fatigue working posture.
Turn the bottom part of the auxiliary handle 8 in coun-
terclockwise direction and swivel the auxiliary handle 8
to the desired position. Then retighten the bottom part
of the auxiliary handle 8 by turning in clockwise direc-
tion.
Adjusting the Drilling Depth (see figure A)
The required drilling depth X can be set with the depth
stop 9.
Press the button for the depth stop adjustment 5 and
insert the depth stop into the auxiliary handle 8.
Insert the SDS-plus drilling tool to the stop into the
SDS-plus tool holder 1. Otherwise, the movability of the
SDS-plus drilling tool can lead to incorrect adjustment
of the drilling depth.
Pull out the depth stop until the distance between the
tip of the drill bit and the tip of the depth stop corre-
spond with the desired drilling depth X.
The knurled surface of the depth stop 9 must face
upward.
GBH 3-28 FE
Professional
0 611 249 7..
720
0–800
0–4000
3.3
SDS-plus
28
80
13
30
3.4
/II
1 619 929 758 • 3.5.07