Bosch GBH Professional 3-28 DFR User Manual

English | 15
Bosch Power Tools 1 619 92A 06A | (2.10.13)
Technical Data
Noise/Vibration Information
Measured sound values determined according to EN 60745.
Typically the A-weighted noise levels of the product are:
Sound pressure level 91 dB(A); sound power level
102 dB(A). Uncertainty K=3 dB.
Wear hearing protection!
GBH 3-28 DRE:
Vibration total values a
h
(triax vector sum) and uncertainty K
determined according to EN 60745:
Hammer drilling into concrete: a
h
=14.5m/s
2
, K=1.6 m/s
2
,
Chiselling: a
h
=10m/s
2
, K=1.5 m/s
2
,
Drilling in metal: a
h
<2.5m/s
2
, K=1.5 m/s
2
,
Screwdriving without impact: a
h
<2.5m/s
2
, K=1.5 m/s
2
GBH 3-28 DFR:
Vibration total values a
h
(triax vector sum) and uncertainty K
determined according to EN 60745:
Hammer drilling into concrete: a
h
=13m/s
2
, K=2 m/s
2
,
Chiselling: a
h
=9.5m/s
2
, K=1.5 m/s
2
,
Drilling in metal: a
h
<2.5m/s
2
, K=1.5 m/s
2
,
Screwdriving without impact: a
h
<2.5m/s
2
, K=1.5 m/s
2
GBH 3-28 DRE/GBH 3-28 DFR:
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
applications of the tool. However if the tool is used for differ-
ent applications, with different accessories or insertion
tools or is poorly maintained, the vibration emission may dif-
fer. This may significantly increase the exposure level over
the total working period.
An estimation of the level of exposure to vibration should al-
so take into account the times when the tool is switched off
or when it is running but not actually doing the job. This may
significantly reduce the exposure level over the total work-
ing 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
patterns.
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: EN 60745
according to the provisions of the directives 2011/65/EU,
2004/108/EC, 2006/42/EC.
Technical file (2006/42/EC) at:
Robert Bosch GmbH, PT/ETM9,
D-70745 Leinfelden-Echterdingen
Robert Bosch GmbH, Power Tools Division
D-70745 Leinfelden-Echterdingen
Leinfelden, 07.10.2013
Rotary Hammer GBH 3-28 DRE GBH 3-28 DFR
Article number
3 611 B3A 0.. 3 611 B4A 0..
Speed control
 
Stop rotation
 
Right/left rotation
 
Quick change chuck
– 
Rated power input
W800800
Impact rate
min
-1
0–4000 0–4000
Impact energy per stroke according to EPTA-Procedure 05/2009
J3.13.1
Speed
min
-1
0–900 0–900
Tool holder
SDS-plus SDS-plus
Spindle collar diameter
mm 50 50
Permissible drilling diameter, max.:
(also see page 16)
–Concrete*
– Brickwork (with core bit)
– Steel
– Wood
mm
mm
mm
mm
28
82
13
30
28
82
13
30
Weight according to EPTA-Procedure 01/2003
kg 3.5 3.6
Protection class
/II /II
*not suitable with core bit
The values given are valid for a nominal voltage [U] of 230 V. For different voltages and models for specific countries, these values can vary.
Henk Becker
Executive Vice President
Engineering
Helmut Heinzelmann
Head of Product Certification
PT/ETM9
OBJ_BUCH-770-007.book Page 15 Wednesday, October 2, 2013 10:37 AM

Bosch GBH Professional 3-28 DFR Specifications

General

Brand	Bosch
Model	GBH Professional 3-28 DFR
Category	Rotary Hammer
Language	English

Summary

Safety Notes

General Power Tool Safety Warnings

Read all safety warnings and instructions. Failure to follow may result in electric shock, fire and/or serious injury.

Work Area Safety

Keep work area clean and well lit. Do not operate in explosive atmospheres. Keep children and bystanders away.

Electrical Safety

Ensure plugs match outlets, avoid body contact with earthed surfaces, protect from rain/wet, do not abuse the cord.

Personal Safety

Stay alert, use common sense, wear personal protective equipment (eye protection, etc.).

Hammer Safety Warnings

Product Description and Specifications

Intended Use

The machine is intended for hammer drilling in concrete, brick, stone, and light chiselling work.

Technical Data

Noise/Vibration Information

Measured sound values determined according to EN 60745. Wear hearing protection!

Assembly

Selecting Drill Chucks and Tools

Information on selecting and using SDS-plus and other tools with the machine.

Operation

Starting Operation

Observe correct mains voltage. Set the operating mode with the mode selector switch 9.

Safety Clutch

Information on the safety clutch and how to react if the tool insert becomes caught.