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TECHNICAL DATA
Type
Production code
Rated input
Output
Impact energy per stroke according to EPTA-Procedure 05/2009
No-load speed
Speed under load max.
Rate of percussion under load max.
Drilling capacity in concrete
Drilling capacity in steel
Drilling capacity in wood
Light core cutter in bricks and limestone
Chuck neck diameter
Weight according EPTA-Procedure 01/2014
Noise Information:
Measured values determined according to EN 62841.
Typically, the A-weighted noise levels of the tool are:
Sound pressure level / Uncertainty K
Sound power level / Uncertainty K
Wear ear protectors.
Vibration Information: Total vibration values (vector sum in
the three axes) determined according to EN 62841.
Vibration emission value a
/ Uncertainty K
h
Hammer-drilling in concrete:
Chiselling
WARNING
The vibration and noise emission level given in this information sheet has been measured in accordance with a standardized
test given in EN 62841 and may be used to compare one tool with another. 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 diff erent
applications, with diff erent accessories or poorly maintained, the vibration emission may diff er. This may signifi cantly increase
the exposure level over the total working period.
An estimation of the level of exposure to vibration should also take into account the times when the tool is switched off or when
it is running but not actually doing the job. This may signifi cantly reduce the exposure level over the total working period.
Identify additional safety measures to protect the operator from the eff ects of vibration and/or noise such as: maintain the tool
and the accessories, keep the hands warm, organization of work patterns.
WARNING!
Read all safety warnings, instructions,
illustrations and specifi cations provided with this power
tool. Failure to follow all instructions listed below may result
in electric shock, fi re and/or serious injury.
Save all warnings and instructions for future reference.
HAMMER SAFETY WARNINGS
Safety instructions for all operations
Wear ear protectors. Exposure to noise can cause hearing
loss.
Use auxiliary handles supplied with the tool. Loss of
control can cause personal injury.
Hold the power tool by insulated gripping surfaces
only, when performing an operation where the cutting
accessory may contact hidden wiring or its own cord.
Cutting accessory contacting a "live" wire may make exposed
metal parts of the power tool "live" and could give the
operator an electric shock.
Safety instructions when using long drill bits with rotary
hammer
Always start drilling at low speed and with the bit tip in
contact with the workpiece. At higher speeds, the bit is
likely to bend if allowed to rotate freely without contacting the
workpiece, resulting the personal injury.
18
PH 28
Rotary Hammer
3963 01 05 XXXXXX MJJJJ
820 W
410 W
3,4 J
0-1250 min
-1
0-900 min
-1
0-4000 min
-1
28 mm
13 mm
30 mm
68 mm
54 mm
2,7 kg
95 dB(A) / 3 dB(A)
103 dB(A) / 3 dB(A)
24 m/s
/ 1,5m/s
2
2
19,0 m/s
/ 1,5 m/s
2
2
Apply pressure only in direct line with the bit and do not
apply excessive pressure. Bits can bend causing breakage
or loss of control, resulting in personal injury.
ADDITIONAL SAFETY AND WORKING INSTRUCTIONS
Use personal protective equipment. Always wear eye
protection. Protective equipment such as a dust mask, non-
skid safety shoes, hard hat or hearing protection used for
appropriate conditions will reduce personal injuries.
The dust produced when using this tool may be harmful to
health. Do not inhale the dust. Wear a suitable dust protection
mask.
Do not machine any materials that present a danger to health
(e.g. asbestos).
Switch the device off immediately if the insertion tool stalls!
Do not switch the device on again while the insertion tool is
stalled, as doing so could trigger a sudden recoil with a high
reactive force. Determine why the insertion tool stalled and
rectify this, paying heed to the safety instructions.
The possible causes may be:
• it is tilted in the workpiece to be machined
• it has pierced through the material to be machined
• the power tool is overloaded
Do not reach into the machine while it is running.
The insertion tool is sharp-edged and can become hot during
ENGLISH
use.
WARNING! Danger of cuts and burns
- when handling the insertion tools
- when setting the device down.
Wear protective gloves when handling insertion tools.
Chips and splinters must not be removed while the machine
is running.
Keep mains lead clear from working range of the machine.
Always lead the cable away behind you.
When working in walls ceiling, or fl oor, take care to avoid
electric cables and gas or waterpipes.
Clamp your workpiece with a clamping device. Unclamped
workpieces can cause severe injury and damage.
Always disconnect the plug from the socket before carrying
out any work on the machine.
When working with large drill diameters, the auxiliary handle
must be fastened in a right angle with the main handle (see
illustrations, section "Twisting the handle").
SPECIFIED CONDITIONS OF USE
The rotary pneumatic hammer can be used for hammer
drilling, chiselling in stone and concrete and drilling in wood,
metal as well as plastic.
Do not use this product in any other way as stated for normal
use.
RESIDUAL RISK
Even when the product is used as prescribed, it is still
impossible to completely eliminate certain residual risk
factors. The following hazards may arise in use and the
operator should pay special attention to avoid the following:
• Injury caused by vibration.
Hold the product by designated handles and restrict
working time and exposure.
• Exposure to noise can cause hearing injury.
Wear ear protection and limit exposure.
• Injury due to fl ying debris
Wear eye protection, heavy long trousers and substancial
footwear at all times.
• Inhalation of toxic dusts.
MAINS CONNECTION
Appliances used at many diff erent locations including wet
room and open air must be connected via a residual current
device (FI, RCD, PRCD) of 30mA or less.
Connect only to single-phase AC current and only to the
system voltage indicated on the rating plate. It is also
possible to connect to sockets without an earthing contact as
the design conforms to safety class II.
Make sure the machine is switched off before plugging in.
This is a device for professional use which may slightly
exceed the guide values for current harmonics when it is
connected to the public low voltage mains supply. You should
therefore contact your energy supply company before you
connect the device to the public low voltage mains supply.
WORKING INSTRUCTIONS
Do not force too much when drilling or hammering. Let the
rotary hammer do the work for you.
WORK WHEN IT'S COLD
If the tool is stored for a long period of time or at cold
temperatures, the lubrication may become stiff and the tool
may not working initially or the working may be weak. If this
happens:
1. Insert a bit or chisel into the tool.
2. Run the tool against a scrap piece of concrete.
3. Pull and release the trigger every few seconds.
After 15 seconds to 2 minutes, the tool will start hammering
normally. The colder the tool is, the longer it will take to warm
up.
CLEANING
The ventilation slots of the machine must be kept clear at all
times.
MAINTENANCE
Important note! If the carbon brushes are worn, in addition
to exchanging the brushes the tool should be sent to after-
sales service. This will ensure long service life and top
performance.
If the supply cord of this appliance is damaged, it must only
be replaced by a repair shop appointed by the manufacturer,
to avoid hazardous situations.
Use only Milwaukee accessories and Milwaukee spare parts.
Should components need to be replaced which have not
been described, please contact one of our Milwaukee service
agents (see our list of guarantee/service addresses).
If needed, an exploded view of the tool can be ordered.
Please state the machine type printed as well as the six-
digit No. on the label and order the drawing at your local
service agents or directly at: Techtronic Industries GmbH,
Max-Eyth-Straße 10, 71364 Winnenden, Germany.
ENGLISH
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