Page 1
AG 125-7SE
AG 125-8SE
Printed: 08.09.2017 | Doc-Nr: PUB / 5373346 / 000 / 00
English
Page 2
Printed: 08.09.2017 | Doc-Nr: PUB / 5373346 / 000 / 00
Page 3
1 Information about the documentation
1.1 About this documentation
• Read this documentation before initial operation or use. This is a
prerequisite for safe, trouble-free handling and use of the product.
• Observe the safety instructions and warnings in this documentation and
on the product.
• Always keep the operating instructions with the product and make sure
that the operating instructions are with the product when it is given to
other persons.
1.2 Explanation of symbols used
1.2.1 Warnings
Warnings alert persons to hazards that may occur when handling or using the
product. The following signal words are used in combination with a symbol:
DANGER! Draws attention to an imminent hazard that will lead to
serious personal injury or fatality.
WARNING! Draws attention to a potential hazard that could lead to
serious personal injury or fatality.
CAUTION! Draws attention to a potentially dangerous situation that
could lead to minor personal injury or material damage.
1.2.2 Symbols in the documentation
The following symbols are used in this document:
Read the operating instructions before use
Instructions for use and other useful information
1.2.3 Symbols in the illustrations
The following symbols are used in illustrations:
These numbers refer to the corresponding illustrations found at the
beginning of these operating instructions.
The numbering reflects the sequence of operations shown in the
illustrations and may deviate from the steps described in the text.
Item reference numbers are used in the overview illustration and
refer to the numbers used in the key in the product overview section.
This symbol is intended to draw special attention to certain points
when handling the product.
Printed: 08.09.2017 | Doc-Nr: PUB / 5373346 / 000 / 00
English 1
Page 4
1.3 Product-dependent symbols
1.3.1 Symbols on the product
The following symbols are used on the product:
Wear eye protection.
Revolutions per minute
Revolutions per minute
Rated speed
Diameter
Protection class II (double-insulated)
1.4 Product information
Hilti products are designed for professional use and may be operated, ser-
viced and maintained only by trained, authorized personnel. This personnel
must be informed of any particular hazards that may be encountered. The
product and its ancillary equipment may present hazards when used incorrectly by untrained personnel or when used not as directed.
The type designation and serial number are printed on the rating plate.
▶ Write down the serial number in the table below. You will be required to
state the product details when contacting Hilti Service or your local Hilti
organization to enquire about the product.
Product information
Angle grinder AG 125-8SE | AG 125-7SE
Generation 05
Serial no.
1.5 Declaration of conformity
We declare, on our sole responsibility, that the product described here
complies with the applicable directives and standards. A copy of the
declaration of conformity can be found at the end of this documentation.
The technical documentation is filed and stored here:
Hilti Entwicklungsgesellschaft mbH | Tool Certification | Hiltistrasse 6 | 86916
Kaufering, Germany
2 Safety
2.1 General power tool safety warnings
WARNING
Read all safety warnings and all instructions. Failure to follow the warnings
and instructions may result in electric shock, fire and/or serious injury.
Save all warnings and instructions for future reference.
2 English
Printed: 08.09.2017 | Doc-Nr: PUB / 5373346 / 000 / 00
Page 5
The term “power tool” in the warnings refers to your mains-operated (corded)
power tool or battery-operated (cordless) power tool.
Work area safety
▶ Keep work area clean and well lit. Cluttered or dark areas invite
accidents.
▶ Do not operate power tools in explosive atmospheres, such as in
the presence of flammable liquids, gases or dust. Power tools create
sparks which may ignite the dust or fumes.
▶ Keep children and bystanders away while operating a power tool.
Distractions can cause you to lose control.
Electrical safety
▶ Power tool plugs must match the outlet. Never modify the plug in any
way. Do not use any adapter plugs with earthed (grounded) power
tools. Unmodified plugs and matching outlets will reduce risk of electric
shock.
▶ Avoid body contact with earthed or grounded surfaces, such as
pipes, radiators, ranges and refrigerators. There is an increased risk of
electric shock if your body is earthed or grounded.
▶ Do not expose power tools to rain or wet conditions. Water entering a
power tool will increase the risk of electric shock.
▶ Do not abuse the cord. Never use the cord for carrying, pulling or
unplugging the power tool. Keep cord away from heat, oil, sharp
edges or moving parts. Damaged or entangled cords increase the risk
of electric shock.
▶ When operating a power tool outdoors, use an extension cord suitable
for outdoor use. Use of a cord suitable for outdoor use reduces the risk
of electric shock.
▶ If operating a power tool in a damp location is unavoidable, use
a residual current device (RCD) protected supply. Use of an RCD
reduces the risk of electric shock.
Personal safety
▶ Stay alert, watch what you are doing and use common sense when
operating a power tool. Do not use a power tool while you are tired
or under the influence of drugs, alcohol or medication. A moment
of inattention while operating power tools may result in serious personal
injury.
▶ Use personal protective equipment. Always wear eye protection.
Protective equipment such as dust mask, non-skid safety shoes, hard
hat, or hearing protection used for appropriate conditions will reduce
personal injuries.
▶ Prevent unintentional starting. Ensure the switch is in the off‐position
before connecting to power source and/or battery pack, picking up
or carrying the tool. Carrying power tools with your finger on the switch
or energising power tools that have the switch on invites accidents.
English 3
Printed: 08.09.2017 | Doc-Nr: PUB / 5373346 / 000 / 00
Page 6
▶ Remove any adjusting key or wrench before turning the power tool
on. A wrench or a key left attached to a rotating part of the power tool
may result in personal injury.
▶ Do not overreach. Keep proper footing and balance at all times. This
enables better control of the power tool in unexpected situations.
▶ Dress properly. Do not wear loose clothing or jewellery. Keep your
hair, clothing and gloves away from moving parts. Loose clothes,
jewellery or long hair can be caught in moving parts.
▶ If devices are provided for the connection of dust extraction and
collection facilities, ensure these are connected and properly used.
Use of dust collection can reduce dust-related hazards.
Power tool use and care
▶ Do not force the power tool. Use the correct power tool for your
application. The correct power tool will do the job better and safer at the
rate for which it was designed.
▶ Do not use the power tool if the switch does not turn it on and off.
Any power tool that cannot be controlled with the switch is dangerous
and must be repaired.
▶ Disconnect the plug from the power source and/or the battery
pack from the power tool before making any adjustments, changing
accessories, or storing power tools. Such preventive safety measures
reduce the risk of starting the power tool accidentally.
▶ Store idle power tools out of the reach of children and do not
allow persons unfamiliar with the power tool or these instructions
to operate the power tool. Power tools are dangerous in the hands of
untrained users.
▶ Maintain power tools. Check for misalignment or binding of moving
parts, breakage of parts and any other condition that may affect the
power tool’s operation. If damaged, have the power tool repaired
before use. Many accidents are caused by poorly maintained power
tools.
▶ Keep cutting tools sharp and clean. Properly maintained cutting tools
with sharp cutting edges are less likely to bind and are easier to control.
▶ Use the power tool, accessories and tool bits etc. in accordance with
these instructions, taking into account the working conditions and
the work to be performed. Use of the power tool for operations different
from those intended could result in a hazardous situation.
Service
▶ Have your power tool serviced by a qualified repair person using only
identical replacement parts. This will ensure that the safety of the power
tool is maintained.
4 English
Printed: 08.09.2017 | Doc-Nr: PUB / 5373346 / 000 / 00
Page 7
2.2 Safety warnings common for grinding, sanding, wire brushing, polishing or abrasive cutting-off operations:
▶ This power tool is intended to function as a grinder, sander, wire brush
or cut-off tool. Read all safety warnings, instructions, illustrations
and specifications provided with this power tool. Failure to follow all
instructions listed below may result in electric shock, fire and/or serious
injury.
▶ Operations such as polishing are not recommended to be performed
with this power tool. Operations for which the power tool was not
designed may create a hazard and cause personal injury.
▶ Do not use accessories which are not specifically designed and
recommended by the tool manufacturer. Just because the accessory
can be attached to your power tool, it does not assure safe operation.
▶ The rated speed of the accessory must be at least equal to the
maximum speed marked on the power tool. Accessories running faster
than their rated speed can break and fly apart.
▶ The outside diameter and the thickness of your accessory must
be within the capacity rating of your power tool. Incorrectly sized
accessories cannot be adequately guarded or controlled.
▶ Threaded mounting of accessories must match the grinder spindle
thread. For accessories mounted by flanges, the arbour hole of the
accessory must fit the locating diameter of the flange. Accessories
that do not match the mounting hardware of the power tool will run out of
balance, vibrate excessively and may cause loss of control.
▶ Do not use a damaged accessory. Before each use inspect the
accessory such as abrasive wheels for chips and cracks, backing
pad for cracks, tear or excess wear, wire brush for loose or cracked
wires. If power tool or accessory is dropped, inspect for damage or
install an undamaged accessory. After inspecting and installing an
accessory, position yourself and bystanders away from the plane of
the rotating accessory and run the power tool at maximum no-load
speed for one minute. Damaged accessories will normally break apart
during this test time.
▶ Wear personal protective equipment. Depending on application,
use face shield, safety goggles or safety glasses. As appropriate,
wear dust mask, hearing protectors, gloves and workshop apron
capable of stopping small abrasive or workpiece fragments. The
eye protection must be capable of stopping flying debris generated by
various operations. The dust mask or respirator must be capable of
filtrating particles generated by your operation. Prolonged exposure to
high intensity noise may cause hearing loss.
▶ Keep bystanders a safe distance away from work area. Anyone
entering the work area must wear personal protective equipment.
Printed: 08.09.2017 | Doc-Nr: PUB / 5373346 / 000 / 00
English 5
Page 8
Fragments of workpiece or of a broken accessory may fly away and
cause injury beyond immediate area of operation.
▶ 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.
▶ Position the cord clear of the spinning accessory. If you lose control,
the cord may be cut or snagged and your hand or arm may be pulled into
the spinning accessory.
▶ Never lay the power tool down until the accessory has come to a
complete stop. The spinning accessory may grab the surface and pull
the power tool out of your control.
▶ Do not run the power tool while carrying it at your side. Accidental
contact with the spinning accessory could snag your clothing, pulling the
accessory into your body.
▶ Regularly clean the power tool’s air vents. The motor’s fan will draw the
dust inside the housing and excessive accumulation of powdered metal
may cause electrical hazards.
▶ Do not operate the power tool near flammable materials. Sparks could
ignite these materials.
▶ Do not use accessories that require liquid coolants. Using water or
other liquid coolants may result in electrocution or shock.
Kickback and related warnings
Kickback is a sudden reaction to a pinched or snagged rotating wheel,
backing pad, brush or any other accessory. Pinching or snagging causes
rapid stalling of the rotating accessory which in turn causes the uncontrolled
power tool to be forced in the direction opposite of the accessory’s rotation
at the point of the binding.
For example, if an abrasive wheel is snagged or pinched by the workpiece,
the edge of the wheel that is entering into the pinch point can dig into the
surface of the material causing the wheel to climb out or kick out. The wheel
may either jump toward or away from the operator, depending on direction
of the wheel’s movement at the point of pinching. Abrasive wheels may also
break under these conditions.
Kickback is the result of power tool misuse and/or incorrect operating
procedures or conditions and can be avoided by taking proper precautions
as given below.
▶ Maintain a firm grip on the power tool and position your body and arm
to allow you to resist kickback forces. Always use auxiliary handle,
if provided, for maximum control over kickback or torque reaction
during start-up. The operator can control torque reactions or kickback
forces, if proper precautions are taken.
6 English
Printed: 08.09.2017 | Doc-Nr: PUB / 5373346 / 000 / 00
Page 9
▶ Never place your hand near the rotating accessory. Accessory may
kickback over your hand.
▶ Do not position your body in the area where power tool will move if
kickback occurs. Kickback will propel the tool in direction opposite to
the wheel’s movement at the point of snagging.
▶ Use special care when working corners, sharp edges etc. Avoid
bouncing and snagging the accessory. Corners, sharp edges or
bouncing have a tendency to snag the rotating accessory and cause loss
of control or kickback.
▶ Do not attach a saw chain woodcarving blade or toothed saw blade.
Such blades create frequent kickback and loss of control.
Safety warnings specific for grinding and abrasive cutting-off operations:
▶ Use only wheel types that are recommended for your power tool and
the specific guard designed for the selected wheel. Wheels for which
the power tool was not designed cannot be adequately guarded and are
unsafe.
▶ The grinding surface of centre depressed wheels must be mounted
below the plane of the guard lip. An improperly mounted wheel that
projects through the plane of the guard lip cannot be adequately protected.
▶ The guard must be securely attached to the power tool and positioned
for maximum safety, so the least amount of wheel is exposed towards
the operator. The guard helps to protect the operator from broken wheel
fragments, accidental contact with wheel and sparks that could ignite
clothing.
▶ Wheels must be used only for recommended applications. For
example: do not grind with the side of cut-off wheel. Abrasive
cut-off wheels are intended for peripheral grinding, side forces applied to
these wheels may cause them to shatter.
▶ Always use undamaged wheel flanges that are of correct size and
shape for your selected wheel. Proper wheel flanges support the wheel
thus reducing the possibility of wheel breakage. Flanges for cut-off wheels
may be different from grinding wheel flanges.
▶ Do not use worn down wheels from larger power tools. Wheel intended
for larger power tool is not suitable for the higher speed of a smaller tool
and may burst.
Additional safety warnings specific for abrasive cutting-off operations:
▶ Do not "jam" the cut-off wheel or apply excessive pressure. Do not
attempt to make an excessive depth of cut. Overstressing the wheel
increases the loading and susceptibility to twisting or binding of the wheel
in the cut and the possibility of kickback or wheel breakage.
▶ Do not position your body in line with and behind the rotating wheel.
When the wheel, at the point of operation, is moving away from your body,
Printed: 08.09.2017 | Doc-Nr: PUB / 5373346 / 000 / 00
English 7
Page 10
the possible kickback may propel the spinning wheel and the power tool
directly at you.
▶ When wheel is binding or when interrupting a cut for any reason,
switch off the power tool and hold the power tool motionless until
the wheel comes to a complete stop. Never attempt to remove the
cut-off wheel from the cut while the wheel is in motion otherwise
kickback may occur. Investigate and take corrective action to eliminate
the cause of wheel binding.
▶ Do not restart the cutting operation in the workpiece. Let the wheel
reach full speed and carefully re-enter the cut. The wheel may bind,
walk up or kickback if the power tool is restarted in the workpiece.
▶ Support panels or any oversized workpiece to minimize the risk of
wheel pinching and kickback. Large workpieces tend to sag under their
own weight. Supports must be placed under the workpiece near the line
of cut and near the edge of the workpiece on both sides of the wheel.
▶ Use extra caution when making a "pocket cut" into existing walls or
other blind areas. The protruding wheel may cut gas or water pipes,
electrical wiring or objects that can cause kickback.
Safety warnings specific for sanding operations:
▶ Do not use excessively oversized sanding disc paper. Follow man-
ufacturers recommendations, when selecting sanding paper. Larger
sanding paper extending beyond the sanding pad presents a laceration
hazard and may cause snagging, tearing of the disc or kickback.
Safety warnings specific for wire brushing operations:
▶ Be aware that wire bristles are thrown by the brush even during
ordinary operation. Do not overstress the wires by applying excessive
load to the brush. The wire bristles can easily penetrate light clothing
and/or skin.
▶ If the use of a guard is recommended for wire brushing, do not allow
any interference of the wire wheel or brush with the guard. Wire wheel
or brush may expand in diameter due to work load and centrifugal forces.
Safety warnings specific for polishing operations:
▶ Do not allow any loose portion of the polishing bonnet or its attach-
ment strings to spin freely. Tuck away or trim any loose attachment
strings. Loose and spinning attachment strings can entangle your fingers
or snag on the workpiece.
2.3 Additional safety instructions
Personal safety
▶ Only use the product if it is in perfect working order.
▶ Never tamper with or modify the tool in any way.
▶ Avoid touching rotating parts – risk of injury!
▶ Wear protective gloves also when changing the accessory tool. Touching
the accessory tool presents a risk of injury (cuts or burns).
8 English
Printed: 08.09.2017 | Doc-Nr: PUB / 5373346 / 000 / 00
Page 11
▶ Before starting work, check the hazard class of the dust that will be pro-
duced when working. Use an industrial vacuum cleaner with an officially
approved protection class in compliance with the locally applicable dust
protection regulations. Dust from materials such as lead-based paint,
certain types of wood and concrete/masonry/stone containing quartz,
minerals or metal may be harmful to health.
▶ Make sure that the workplace is well ventilated and, where necessary,
wear a respirator appropriate for the type of dust generated. Contact with
or inhalation of the dust may cause allergic reactions and/or respiratory
or other diseases among operators or bystanders. Certain kinds of dust
are classified as carcinogenic such as oak and beech dust, especially
in conjunction with additives for wood conditioning (chromate, wood
preservative). Material containing asbestos may be handled only by
specialists.
▶ Take breaks between working and do physical exercises to improve the
blood circulation in your fingers. Exposure to vibration during long periods
of work can lead to disorders of the blood vessels and nervous system in
the fingers, hands and wrists.
Electrical safety
▶ Before beginning work, check the working area for concealed electric
cables or gas and water pipes. External metal parts of the power tool may
give you an electric shock if you damage an electric cable accidentally.
Using and handling power tools with care
▶ Do not use cutting discs for grinding.
▶ Tighten the accessory tool and flange securely. If the accessory tool and
flange are not tightened securely, the accessory tool may work loose from
the spindle due to the braking effect of the motor after switching off.
▶ Comply with the manufacturer's instructions for handling and storing
grinding discs.
Printed: 08.09.2017 | Doc-Nr: PUB / 5373346 / 000 / 00
English 9
Page 12
3 Description
3.1 Product overview
10 English
Printed: 08.09.2017 | Doc-Nr: PUB / 5373346 / 000 / 00
Page 13
Arbor lockbutton
@
Steadying rib for set-down
;
On/off switch
=
Speed adjustment thumb-
%
wheel
Side handle
&
Pin wrench
(
Clamping nut
)
Abrasive cutting disc/abrasive
+
grinding disc
3.2 Intended use
The product described is a hand-held electric angle grinder. It is designed
for cutting, grinding and sanding metal and mineral materials without use of
water.
The tool may be operated only when connected to a power supply providing
a voltage and frequency in compliance with the information given on its
rating plate.
• The power tool may be used for cutting, slitting and grinding mineral
materials only when equipped with the corresponding guard and front
cover.
• A dust removal hood together with a suitable Hilti vacuum cleaner must
be used for working on mineral materials such as concrete or stone.
3.3 Items supplied
Angle grinder, side handle, standard guard, front cover, clamping flange,
clamping nut, wrench, operating instructions.
Other system products approved for use with this product can be found at
your local Hilti Store or online at: www.hilti.group | USA: www.hilti.com
3.4 Speed preselection
This angle grinder has adjustable speed preselection with 6 speeds:
• AG 125 7SE: 6000 - 11500 rpm
• AG 125 8SE: 3500 - 11500 rpm
3.5 Restart interlock
The power tool does not restart by itself when the on/off switch is locked
in the on-position and the power returns after an interruption in the electric
supply. The on/off switch must first be released and then pressed again to
restart.
Clamping flange with O-ring
§
Guard
/
Clamping lever
:
Adjusting screw
∙
Arbor
$
Keyed locating lug
£
Threaded socket for side han-
|
dle
Printed: 08.09.2017 | Doc-Nr: PUB / 5373346 / 000 / 00
English 11
Page 14
3.6 Front cover for the disc guard
When grinding with straight grinding discs and cutting with cutting discs
in metalworking applications, use the standard guard with front cover.
3.7 DG-EX 115/4,5" dust hood for grinding (accessory)
The grinding system is suitable only for occasional use with diamond cup
wheels for grinding mineral materials.
CAUTION Use of this hood for working on metal is prohibited.
12 English
Printed: 08.09.2017 | Doc-Nr: PUB / 5373346 / 000 / 00
Page 15
3.8 DC-EX 125/5"C dust hood for cutting (accessory)
Use the DC-EX 125/5"C dust hood when cutting masonry and concrete.
CAUTION Use of this hood for working on metal is prohibited.
4 Consumables
Only synthetic resin-bonded, fiber-reinforced discs with a maximum diameter of Ø 125 mm which are approved for use at a rotational speed of at least
11,500/min and a peripheral speed of 80 m/s may be used.
The maximum grinding disc thickness is 6.4 mm and the maximum cutting
disc thickness is 2.5 mm.
WARNING! When cutting or slitting with cutting discs, always use the
standard guard with additional cover plate.
Discs
Application Designation Material
Abrasive cutting disc Cutting, slitting ACD Metal
Diamond cutting disc Cutting, slitting DC-TP, DC-D
Mineral
(SPX, SP, P)
Abrasive grinding disc Rough grind-
ing
Diamond grinding disc Rough grind-
ing
Wire brushes Wire brushes 3CS, 4CS,
AGD, AFD,
AND
DG-CW (SPX,
SP, P)
Metal
Mineral
Metal
3SS, 4SS
Abrasive resin-fiber
disc
Rough grinding
AP-D Metal
Printed: 08.09.2017 | Doc-Nr: PUB / 5373346 / 000 / 00
English 13
Page 16
Suitability of discs for the equipment used
Item Equipment ACD AGD,
AFD,
AND
DG-
CW
(SPX,
SP, P)
DC-
TP,
DC-D
(SPX,
AP-D 3CS,
4CS,
3SS,
4SS
SP, P)
A Guard X X X X X X
B Front cover (in
X — — X — —
combination
with A)
C DG-EX 115/4.5"
— — X — — —
dust hood for
grinding (only
for 115 DG-CW)
D DC-EX 125/5"C
— — — X — —
dust hood for
cutting (only in
conjunction with
A)
E Side handle X X X X X X
F Clamping nut X X X X — —
G Clamping flange X X X X — —
H Clamping nut
— — — — X —
for abrasive
resin-fiber disc
I Support plate — — — — X —
5 Technical data
5.1 Angle grinder
Note
For rated voltage, frequency, current and input power, please refer to
the country-specific type identification plate.
If the device is powered by a generator or transformer, the generator or
transformer’s power output must be at least twice the rated input power
shown on the type identification plate of the device. The operating voltage
of the transformer or generator must always be within +5% and -15% of the
rated voltage of the device.
AG 125-7SE AG 125-8SE
Rated power input
Rated speed
710 W 800 W
11,500 /min 11,500 /min
14 English
Printed: 08.09.2017 | Doc-Nr: PUB / 5373346 / 000 / 00
Page 17
AG 125-7SE AG 125-8SE
Maximum disc diameter
Thread diameter
Thread length
Weight in accordance with EPTA
125 mm 125 mm
M14 M14
22 mm 22 mm
2.0 kg 2.0 kg
procedure 01
5.2 Noise information and vibration values in accordance with EN 60745
The sound pressure and vibration values given in these instructions have
been measured in accordance with a standardized test and may be used to
compare one power tool with another. They may be used for a preliminary
assessment of exposure.
The data given represents the main applications of the power tool. However,
if the power tool is used for different applications, with different accessory
tools or is poorly maintained, the data may vary. This may significantly
increase exposure over the total working period.
An accurate estimation of exposure should also take into account the times
when the power tool is switched off, or when it is running but not actually
being used for a job. This may significantly reduce exposure over the total
working period.
Identify additional safety measures to protect the operator from the effects
of noise and/or vibration, for example: Maintaining the power tool and
accessory tools, keeping the hands warm, organization of work patterns.
Noise emission values
AG 125-7SE AG 125-8SE
Sound power level (LWA)
Uncertainty for the sound power
96.3 dB(A) 96.3 dB(A)
3 dB(A) 3 dB(A)
level (KWA)
Emission sound pressure level
85.3 dB(A) 85.3 dB(A)
(LpA)
Uncertainty for the sound pres-
3 dB(A) 3 dB(A)
sure level (KpA)
Total vibration
AG 125-7SE AG 125-8SE
Surface grinding with the
4.8 m/s² 4.8 m/s²
vibration-absorbing side handle
(a
)
h,AG
Sanding (a
h,DS
Uncertainty (K)
)
3.6 m/s² 3.6 m/s²
1.5 m/s² 1.5 m/s²
Printed: 08.09.2017 | Doc-Nr: PUB / 5373346 / 000 / 00
English 15
Page 18
6 Operation
6.1 Preparations at the workplace
CAUTION
Risk of injury! Inadvertent starting of the product.
▶ Unplug the supply cord before making adjustments to the power tool
or before changing accessories.
Observe the safety instructions and warnings in this documentation and on
the product.
6.2 Fitting the side handle
▶ Screw the side handle into one of the threaded bushings provided.
6.3 Guard
▶ Observe the instructions for fitting the applicable guard.
6.3.1 Fitting the guard
Note
The keying on the guard ensures that only a guard designed for use
with the power tool can be fitted. The keyed locating lug also prevents
the guard from coming into contact with the disc.
1. Release the clamping lever.
2. Fit the guard onto the spindle collar so that the keyed locating lug engages
in the recess provided.
3. Rotate the guard to the required position.
16 English
Printed: 08.09.2017 | Doc-Nr: PUB / 5373346 / 000 / 00
Page 19
4. Secure the guard by closing the clamping lever.
Note
The guard is already set to the correct tension by way of the adjusting
screw. If the tension is too low when the guard is fitted, the adjusting
screw can be tightened slightly to increase the tension.
6.3.2 Adjusting the guard
1. Release the clamping lever.
2. Turn the guard to the required position.
3. Secure the guard by closing the clamping lever.
6.3.3 Removing the guard
1. Release the clamping lever.
2. Rotate the guard until the keyed locating lug is aligned with the keyed
locating groove and then remove the guard.
6.4 Fitting or removing the front cover
1. Position the front cover with the closed side on the standard guard and
push it on until it engages.
2. To remove it, release the catch for the front cover and then lift the front
cover away from the standard guard.
English 17
Printed: 08.09.2017 | Doc-Nr: PUB / 5373346 / 000 / 00
Page 20
6.5 Fitting or removing the discs
CAUTION
Risk of injury. The accessory tool may be hot.
▶ Wear protective gloves when changing the accessory tool.
Note
Diamond discs must be replaced when their cutting or grinding performance drops significantly. This generally is the case when the diamond
segments reach a height of less than 2 mm (1/16").
Other discs must be replaced when their cutting performance drops
significantly or other parts of the angle grinder (not the disc) come into
contact with the material you are working on.
Abrasive discs must be replaced when their expiry date has been
reached.
6.5.1 Fitting the grinding disc
1. Disconnect the mains plug from the power outlet.
2. Check that the O-ring is in place in the clamping flange and that it is
undamaged.
Result
The O-ring is damaged.
There is no O-ring in the clamping flange.
▶ Fit a new clamping flange with O-ring.
3. Fit the clamping flange onto the drive spindle.
4. Fit the grinding disc.
5. Screw on the clamping nut corresponding to the type of accessory tool
fitted.
6. Press the spindle lockbutton and hold it in this position.
7. Use the pin wrench to tighten the clamping nut securely, then release the
spindle lockbutton and remove the wrench.
18 English
Printed: 08.09.2017 | Doc-Nr: PUB / 5373346 / 000 / 00
Page 21
6.5.2 Removing the grinding disc
1. Disconnect the mains plug from the power outlet.
CAUTION
Risk of breakage and irreparable damage. If the spindle lockbutton
is pressed while the spindle is rotating, this may cause the accessory
tool to work loose or detach from the power tool.
▶ Press the spindle lockbutton only when the spindle has stopped
rotating.
2. Press the spindle lockbutton and hold it in this position.
3. Release the clamping nut by gripping it with the pin wrench and turning
the nut counterclockwise.
4. Release the spindle lockbutton and remove the grinding disc.
6.6 Fitting the wire brush
1. Disconnect the mains plug from the power outlet.
2. Fit the side handle. → page 16
3. Fit the guard. → page 16
4. Place the wire brush in position and tighten it hand-tight.
5. Press the spindle lockbutton and hold it in this position.
6. Tighten the wire brush with a suitable open-end wrench.
7. Then release the spindle lockbutton and remove the open-end wrench.
Printed: 08.09.2017 | Doc-Nr: PUB / 5373346 / 000 / 00
English 19
Page 22
6.7 Fitting the abrasive resin-fiber disc
1. Disconnect the mains plug from the power outlet.
2. Fit the side handle. → page 16
3. Fit the guard. → page 16
4. Fit the support plate and the abrasive resin-fiber disc, screw on the
clamping nut and tighten it securely.
5. Press the spindle lockbutton and hold it in this position.
6. Use the pin wrench to tighten the clamping nut securely, then release the
spindle lockbutton and remove the wrench.
6.8 Types of work
WARNING
Damaged power cords are a safety hazard! If the supply cord or
extension cord is damaged while work is in progress, immediately
disconnect the device and the cord from the electricity supply. Do not
touch the damaged part of the cord.
▶ Regularly check all supply cords. Replace defective extension cords.
Have damaged power cords replaced by a qualified specialist.
Use of a ground fault circuit interrupter (residual current device, RCD) with a
maximum tripping current of 30 mA is recommended.
6.9 Switching on
1. Plug the supply cord into the power outlet.
2. Press the rear section of the on/off switch.
3. Slide the on/off switch forward.
4. Lock the on/off switch.
◁ The motor runs.
20 English
Printed: 08.09.2017 | Doc-Nr: PUB / 5373346 / 000 / 00
Page 23
6.10 Cutting
▶ When cutting, apply moderate feed pressure and do not tilt the power
tool or the cutting disc (when working, hold at approx. 90° to the surface
being cut).
Note
For best results when cutting profiles and square tube, start cutting
at the smallest cross section.
6.11 Rough grinding
CAUTION
Risk of injury. The abrasive cutting disc could shatter and flying
fragments may cause injury.
▶ Never use abrasive cutting discs for grinding.
▶ Move the power tool to and fro while maintaining a 5° to 30° angle of
attack and applying moderate pressure.
◁ This will avoid overheating and discoloration of the workpiece and help
ensure an even surface finish.
6.12 Switching off
▶ Press the rear section of the on/off switch.
◁ The on/off switch jumps into the off position and the motor stops.
7 Care and maintenance
7.1 Care and maintenance
WARNING
Danger of electric shock! Carrying out care and maintenance while the
supply cord is connected to the power outlet presents a risk of serious
injuries including burns.
▶ Always unplug the supply cord before carrying out all care and
maintenance tasks.
Care
• Carefully remove stubborn dirt.
• Clean the air vents carefully with a dry brush.
• Use only a slightly damp cloth to clean the casing. Do not use cleaning
agents containing silicone as they can attack the plastic parts.
Maintenance
• At regular intervals, check all visible parts and the controls for signs of
damage and make sure that they all function correctly.
Printed: 08.09.2017 | Doc-Nr: PUB / 5373346 / 000 / 00
English 21
Page 24
• Do not operate the power tool if signs of damage are found or if parts
malfunction. Have damage repaired immediately by Hilti Service.
• After cleaning and maintenance, refit all guards or protective devices and
check that they function correctly.
Note
To help ensure safe and reliable operation, use only genuine Hilti spare
parts and consumables. Spare parts, consumables and accessories
approved by Hilti for use with the product can be found at your local
Hilti Store or online at: www.hilti.group / www.hilti.com
7.2 Replacing the supply cord
7.2.1 Removing the supply cord
1. Disconnect the supply cord plug from the power outlet.
2. Unscrew the screw in the rear part of the housing and remove the rear
part of the housing.
3. Slacken the two strain relief clamp screws.
4. Unscrew the two screws and disconnect and remove the supply cord.
22 English
Printed: 08.09.2017 | Doc-Nr: PUB / 5373346 / 000 / 00
Page 25
7.2.2 Fitting the supply cord
1. Work the supply cord into position in the rear part of the housing.
2. Push the supply cord through the protective sleeve.
3. Strip 5 mm of insulation off the ends of the conductors.
4. Insert both conductors under the strain relief clamp.
5. Slip the supply cord conductors underneath the two screws and tighten
the screws (tightening torque: 0.5-0.8 Nm).
6. Position the supply cord so that the protective sleeve fits snugly, without
a gap.
7. Make sure that the cable sheath projects 5 mm past the strain relief
clamp and tighten the screws of the strain relief clamp (tightening torque:
1.35-1.75 Nm).
8. Close the housing and tighten the screw in the rear part of the housing
(tightening torque: 1.35-1.75 Nm).
Printed: 08.09.2017 | Doc-Nr: PUB / 5373346 / 000 / 00
English 23
Page 26
7.3 Replacing the on/off switch
1. Disconnect the supply cord plug from the power outlet.
2. Unscrew the screw in the rear part of the housing and remove the rear
part of the housing.
3. Slacken the two screws and disconnect the two supply cord conductors.
4. Mark the positions of the flat plugs on the on/off switch.
5. Disconnect the four conductors from the on/off switch.
6. Remove the on/off switch by lifting the other tab.
7. Insert the new on/off switch.
8. Connect the four conductors to the on/off switch in accordance with the
markings.
9. Slip the supply cord conductors underneath the two screws and tighten
the screws (tightening torque: 0.5-0.8 Nm).
10.Close the housing and tighten the screw in the rear part of the housing
(tightening torque: 1.35-1.75 Nm).
24 English
Printed: 08.09.2017 | Doc-Nr: PUB / 5373346 / 000 / 00
Page 27
7.4 Replacing the carbon brushes
1. Disconnect the supply cord plug from the power outlet.
2. Unscrew the screw in the rear part of the housing and remove the rear
part of the housing.
3. Use pliers to slide the spring plate to the side.
4. Remove the carbon brush with your fingers or with the aid of a suitable
tool.
5. Unplug the carbon brush.
6. Plug in the new carbon brush.
7. Insert the new carbon brush into the cage.
English 25
Printed: 08.09.2017 | Doc-Nr: PUB / 5373346 / 000 / 00
Page 28
8. Position the spring plate on the carbon brush and press the parts in firmly.
9. Replace the other carbon brush in the same way.
10.Close the housing and tighten the screw in the rear part of the housing
(tightening torque: 1.35-1.75 Nm).
7.5 Checks after care and maintenance work
▶ After carrying out care and maintenance, check that all protective and
safety devices are fitted and that they function faultlessly.
8 Transport and storage
• Do not transport electric tools with accessory tools fitted.
• Always unplug the supply cord before storing an electric tool or appliance.
• Store tools and appliances in a dry place where they cannot be accessed
by children or unauthorized persons.
• Check electric tools or appliances for damage after long periods of
transport or storage.
9 Troubleshooting
If the trouble you are experiencing is not listed in this table or you are unable
to remedy the problem by yourself, contact Hilti Service.
Trouble or fault Possible cause Action to be taken
The tool doesn’t
start.
Interruption in the electric supply.
▶ Plug in another power
tool or appliance
and check whether it
works.
The supply cord or plug
is defective.
▶ Remove the supply
cord. → page 22
▶ Fit the supply cord.
→ page 23
The tool doesn’t
work.
The carbon brushes are
worn.
The tool has been overloaded.
▶ Replace the carbon
brushes. → page 25
▶ Release the on/off
switch and then press
it again. Then allow
the power tool to run
under no load for
approx. 30 seconds.
The tool does not
achieve full power.
The extension cord conductor cross section
(gauge) is inadequate.
▶ Use an extension cord
with an adequate conductor cross section.
26 English
Printed: 08.09.2017 | Doc-Nr: PUB / 5373346 / 000 / 00
Page 29
10 Disposal
Most of the materials from which Hilti tools and appliances are manufactured can be recycled. The materials must be correctly separated before
they can be recycled. In many countries, your old tools, machines or appliances can be returned to Hilti for recycling. Ask Hilti Service or your Hilti
representative for further information.
▶ Disposal of electric tools or appliances together with household
waste is not permissible.
11 Manufacturer’s warranty
▶ Please contact your local Hilti representative if you have questions about
the warranty conditions.
Printed: 08.09.2017 | Doc-Nr: PUB / 5373346 / 000 / 00
English 27
Page 30
28 English
Printed: 08.09.2017 | Doc-Nr: PUB / 5373346 / 000 / 00
Page 31
Printed: 08.09.2017 | Doc-Nr: PUB / 5373346 / 000 / 00
Page 32
Hilti = registered trademark of Hilti Corp., Schaan
Printed: 08.09.2017 | Doc-Nr: PUB / 5373346 / 000 / 00
**
20170904
Loading...