tions provided with this power tool. Failure to follow all in-
structions listed below may result in electric shock, fire and/
or serious injury.
Save all warnings and instructions for future reference.
The term "power tool" in the warnings refers to your mainsoperated (corded) power tool or battery-operated (cordless) power tool.
Work area safety
u Keep work area clean and well lit. Cluttered or dark
areas invite accidents.
u 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.
u Keep children and bystanders away while operating a
power tool. Distractions can cause you to lose control.
Electrical safety
u 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.
u Avoid body contact with earthed or grounded sur-
faces, such as pipes, radiators, ranges and refrigerators. There is an increased risk of electric shock if your
body is earthed or grounded.
u Do not expose power tools to rain or wet conditions.
Water entering a power tool will increase the risk of electric shock.
u Do not abuse the cord. Never use the cord for carry-
ing, 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.
u When operating a power tool outdoors, use an exten-
sion cord suitable for outdoor use. Use of a cord suitable for outdoor use reduces the risk of electric shock.
u If operating a power tool in a damp location is un-
avoidable, use a residual current device (RCD) protected supply. Use of an RCD reduces the risk of electric
shock.
Personal safety
u 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 inatten-
Read all safety warnings, instructions, illustrations and specifica-
tion while operating power tools may result in serious personal injury.
u 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.
u 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.
u 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.
u Do not overreach. Keep proper footing and balance at
all times. This enables better control of the power tool in
unexpected situations.
u Dress properly. Do not wear loose clothing or jew-
ellery. Keep your hair and clothing away from moving
parts. Loose clothes, jewellery or long hair can be caught
in moving parts.
u If devices are provided for the connection of dust ex-
traction and collection facilities, ensure these are connected and properly used. Use of dust collection can re-
duce dust-related hazards.
u Do not let familiarity gained from frequent use of tools
allow you to become complacent and ignore tool
safety principles. A careless action can cause severe in-
jury within a fraction of a second.
Power tool use and care
u 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.
u 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.
u Disconnect the plug from the power source and/or re-
move the battery pack, if detachable, 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.
u 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.
u Maintain power tools and accessories. Check for mis-
alignment 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.
1 609 92A 502 | (31.07.2019)Bosch Power Tools
English | 5
u Keep cutting tools sharp and clean. Properly main-
tained cutting tools with sharp cutting edges are less
likely to bind and are easier to control.
u 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.
u Keep handles and grasping surfaces dry, clean and
free from oil and grease. Slippery handles and grasping
surfaces do not allow for safe handling and control of the
tool in unexpected situations.
Battery tool use and care
u Recharge only with the charger specified by the manu-
facturer. A charger that is suitable for one type of battery pack may create a risk of fire when used with another
battery pack.
u Use power tools only with specifically designated bat-
tery packs. Use of any other battery packs may create a
risk of injury and fire.
u When battery pack is not in use, keep it away from
other metal objects, like paper clips, coins, keys,
nails, screws or other small metal objects, that can
make a connection from one terminal to another.
Shorting the battery terminals together may cause burns
or a fire.
u Under abusive conditions, liquid may be ejected from
the battery; avoid contact. If contact accidentally occurs, flush with water. If liquid contacts eyes, additionally seek medical help. Liquid ejected from the bat-
tery may cause irritation or burns.
u Do not use a battery pack or tool that is damaged or
modified. Damaged or modified batteries may exhibit
unpredictable behaviour resulting in fire, explosion or risk
of injury.
u Do not expose a battery pack or tool to fire or excess-
ive temperature. Exposure to fire or temperature above
130 C maycause explosion.°
u Follow all charging instructions and do not charge the
battery pack or tool outside the temperature range
specified in the instructions. Charging improperly or at
temperatures outside the specified range may damage
the battery and increase the risk of fire.
Service
u 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.
u Never service damaged battery packs. Service of bat-
tery packs should only be performed by the manufacturer
or authorized service providers.
Safety instructions for nibblers
u This power tool is not suitable for bench-mounted use.
It must not be clamped into a vice or fastened to a workbench, for example.
u Wear protective gloves during work. Sharp burrs de-
velop on the cut sheets; these can cause injury.
u In case of damage and improper use of the battery, va-
pours may be emitted. The battery can set alight or explode. Ensure the area is well ventilated and seek medical
attention should you experience any adverse effects. The
vapours may irritate the respiratory system.
u Do not open the battery. There is a risk of short-circuit-
ing.
u The battery can be damaged by pointed objects such
as nails or screwdrivers or by force applied externally.
An internal short circuit may occur, causing the battery to
burn, smoke, explode or overheat.
u Only use the battery with products from the manufac-
turer. This is the only way in which you can protect the
battery against dangerous overload.
Protect the battery against heat, e.g. against
continuous intense sunlight, fire, dirt, water
and moisture. There is a risk of explosion and
short-circuiting.
Product Description and
Specifications
Read all the safety and general instructions.
Failure to observe the safety and general instructions may result in electric shock, fire
and/or serious injury.
Please observe the illustrations at the beginning of this operating manual.
Intended Use
The power tool is intended for cutting sheet metal without
deforming the material and is suitable for straight cuts, cutouts and narrow curves.
Product features
The numbering of the product features refers to the diagram
of the power tool on the graphics page.
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(10)
(11)
A)
Accessories shown or described are not included with the
product as standard. You can find the complete selection of
accessories in our accessories range.
A)
Battery
Battery release button
A)
On/off switch
Die holder screw
Handle (insulated gripping surface)
O-ring
Die holder
Punch
Die
Rubber ring for knurled screw
Knurled screw for die
Bosch Power Tools1 609 92A 502 | (31.07.2019)
6 | English
Technical data
NibblerGNA 18V-16
Article number
3601E295..
Rated voltageV=18
No-load stroke rate n
Max. steel sheet cutting
A)
capacity
0
−1
min
mm1.6
1400
Cutting widthmm5
Smallest curve radiusmm40
Weight according to
kg2.2−3.0
EPTA-Procedure 01:2014
Recommended ambient tem-
°C0 to +35
perature during charging
Permitted ambient temperat-
°C−20 to +50
ure during operationC) and
during storage
Recommended batteriesGBA 18V…
ProCORE18V…
Recommended chargersGAL 18...
GAX 18...
GAL 36...
A) with reference to steel sheet of up to 400N/mm
B) Depends on battery in use
C) Limited performance at temperatures <0°C
2
Assembly
Charging the Battery
u Use only the chargers listed in the technical data. Only
these chargers are matched to the lithium-ion battery of
your power tool.
Note: The battery is supplied partially charged. To ensure
full battery capacity, fully charge the battery in the charger
before using your power tool for the first time.
The lithium-ion battery can be charged at any time without
reducing its service life. Interrupting the charging process
does not damage the battery.
The lithium-ion battery is protected against deep discharge
by the "Electronic Cell Protection (ECP)". When the battery
is discharged, the power tool is switched off by means of a
protective circuit: The application tool no longer rotates.
u Do not continue to press the On/Off switch after the
power tool has automatically switched off. The battery
can be damaged.
Removing the battery
The battery(1) is equipped with two locking levels to prevent the battery from falling out if the battery release button(2) is pressed unintentionally. As long as the battery is
inserted in the power tool, it is held in position by means of a
spring.
To remove the battery(1), press the battery release button(2) and pull the battery out of the power tool. Do not use
force to do this.
Battery charge indicator
The green LEDs on the battery charge indicator indicate the
state of charge of the battery. For safety reasons, it is only
possible to check the state of charge when the power tool is
not in operation.
Press the button for the battery charge indicator or to
show the state of charge. This is also possible when the bat-
B)
tery is removed.
If no LED lights up after pressing the button for the battery
charge indicator, then the battery is defective and must be
replaced.
Battery model GBA 18V...
LEDsCapacity
3× continuous green light60−100%
2× continuous green light30−60%
1× continuous green light5−30%
1× flashing green light0−5%
Battery model ProCORE18V...
LEDsCapacity
5× continuous green light80−100%
4× continuous green light60−80%
3× continuous green light40−60%
2× continuous green light20−40%
1× continuous green light5−20%
1× flashing green light0−5%
Operation
Starting Operation
Inserting the Battery
Push the charged battery(1) into the base of the power tool
until the battery is securely locked.
Switching On and Off
To switch on the power tool, slide the on/off switch(3) forwards so that I appears on the switch.
To switch off the power tool, slide the on/off switch(3)
backwards so that 0 appears on the switch.
Changing the cutting direction
To change the cutting direction, the die holder(7) can be
turned to three positions, each offset by 90°. Cutting to-
1 609 92A 502 | (31.07.2019)Bosch Power Tools
English | 7
wards the rear (towards the housing of the machine) is not
possible.
To turn the die holder(7), loosen the die holder screw(4)
until the die holder can be turned. Turn it 90° to the right or
the left in relation to the longitudinal axle of the power tool.
Make sure that the screw(4) engages in the drill hole of the
die holder(7). Tighten the screw.
Working Advice
u Remove the battery from the power tool before carry-
ing out work on the power tool (e.g. maintenance,
changing tool, etc.). The battery should also be removed for transport and storage. There is risk of injury
from unintentionally pressing the on/off switch.
u This power tool is not suitable for bench-mounted use.
It must not be clamped into a vice or fastened to a workbench, for example.
u Wear protective gloves during work. Sharp burrs de-
velop on the cut sheets; these can cause injury.
u Exercise caution when handling the cutting chips. The
chips have sharp tips that can cause injuries.
Apply the power tool to the workpiece only when switched
on. Always hold the power tool vertical to the surface of the
steel sheet and do not tilt it.
The cut is made as the punch moves downwards. Guide the
power tool evenly, pushing it gently in the cutting direction.
Applying too much pressure to the power tool will significantly reduce the service life of application tools and can
damage the power tool.
The power tool operates more quietly when it is raised
slightly during cutting. If the punch jams during cutting,
switch the power tool off, lubricate the punch and release
the sheet. Do not use force to do this, as this will damage the
punch and the die.
Maximum steel sheet cutting capacity
The maximum steel sheet cutting capacity d
the strength properties of the material to be cut.
The power tool allows for cutting of metal sheet to the following thicknesses:
Materialmax. strength
(N/mm2)
Steel400
600
800
Aluminium200
Lubricating/cooling the punch
To extend the service life of the punch(8), a lubricating
agent with good cooling properties (e.g. cutting oil) should
be used.
Apply a line of lubricant to the top side of the metal sheet
along the intended cutting line.
depends on
max
d
max
(mm)
1.6
1.0
0.7
2.0
Cutting along a cutting mark or with a guide
Straight cuts are carried out easier when the power tool is
guided alongside a rule.
Contours can be cut by guiding the power tool along a template.
For inside cuts, a hole with a diameter of 21mm must be
pre-drilled.
Temperature Dependent Overload Protection
In normal conditions of use, the power tool cannot be overloaded. If the power tool is overloaded or the battery temperature is outside the permitted range, the stroke rate is reduced or the power tool shuts down. When the stroke rate is
reduced, the power tool will not run at the full stroke rate
again until the battery temperature is back within the permitted range. In the event of automatic shutdown, switch off the
power tool and allow the battery to cool down before switching the tool on again.
Recommendations for Optimal Handling of the Battery
Protect the battery against moisture and water.
Only store the battery within a temperature range of −20 to
50°C. Do not leave the battery in your car in the summer, for
example.
Occasionally clean the ventilation slots on the battery using a
soft brush that is clean and dry.
A significantly reduced operating time after charging indicates that the battery has deteriorated and must be replaced.
Follow the instructions on correct disposal.
Maintenance and Service
Maintenance and Cleaning
u Remove the battery from the power tool before carry-
ing out work on the power tool (e.g. maintenance,
changing tool, etc.). The battery should also be removed for transport and storage. There is risk of injury
from unintentionally pressing the on/off switch.
u To ensure safe and efficient operation, always keep
the power tool and the ventilation slots clean.
Clean and lubricate the punch(8) and die(9) every three
operating hours.
Change the punch and die in good time when worn. Only
sharp tools produce a good cutting quality and make the
power tool last longer.
The punch(8) and the die(9) may not be resharpened.
Changing the die
Unscrew the knurled screw(11) from the die holder(7).
Take out the die(9).
If necessary, clean the die holder(7). Put a new, well
greased die(9) into the die holder. Pay attention to the
alignment of the flat side.
Screw back on the knurled screw(11) with the rubber
ring(10) attached. Use a hex key to tighten the screw
against the resistance of the rubber ring (3–4Nm).
Bosch Power Tools1 609 92A 502 | (31.07.2019)
8 | English
Changing the punch
Loosen the die holder screw(4) and pull the die holder(7)
completely out of the housing.
Slide the punch(8) sideways out of the mounting and pull it
out in a downward motion.
Put a new, well greased punch(8) in the groove of the
mounting and centre it.
Push the die holder(7) carefully over the punch and back
into the housing. Turn the die holder into one of the three
possible positions depending on the cutting direction required. Firmly tighten the die holder screw(4).
After-Sales Service and Application Service
Our after-sales service responds to your questions concerning maintenance and repair of your product as well as spare
parts. You can find explosion drawings and information on
spare parts at: www.bosch-pt.com
The Bosch product use advice team will be happy to help you
with any questions about our products and their accessories.
In all correspondence and spare parts orders, please always
include the 10‑digit article number given on the nameplate
of the product.
Bosch Power Tool (China) Co. Ltd.
Bosch Service Center
567, Bin Kang Road
Bin Kang District
Hangzhou, Zhejiang Province
China 310052
Tel.: (0571) 8887 5566 / 5588
Fax: (0571) 8887 6688 x 5566# / 5588#
E-Mail: bsc.hz@cn.bosch.com
www.bosch-pt.com.cn
HK and Macau Special Administrative Regions
Robert Bosch Co. Ltd.
Flat B, 2/F, Yeung Yiu Chung No. 6 Industrial Building,
19 Cheung Shun Street
Cheung Sha Wan
Kowloon, Hong Kong
Customer Service Hotline: +852 2101 0235
Fax: +852 2590 9762
E-Mail: info@hk.bosch.com
www.bosch-pt.com.hk
India
Bosch Service Center
69, Habibullah Road, (Next to PSBB School), T. Nagar
Chennai–600077
Phone: (044) 64561816
Bosch Service Center
18, Community Center
Phase 1, Mayapuri
New Delhi–110064
Phone: (011) 43166190
Indonesia
PT Robert Bosch
Palma Tower 10th Floor
Jalan RA Kartini II-S Kaveling 6
Pondok Pinang, Kebayoran Lama
Jakarta Selatan 12310
Tel.: (21) 3005-5800
www.bosch-pt.co.id
Malaysia
Robert Bosch Sdn. Bhd.(220975-V) PT/SMY
No. 8A, Jalan 13/6
46200 Petaling Jaya
Selangor
Tel.: (03) 79663194
Toll-Free: 1800 880188
Fax: (03) 79583838
E-Mail: kiathoe.chong@my.bosch.com
www.bosch-pt.com.my
Pakistan
Robert Bosch Middle East FZE – Pakistan Liaison Office
2nd Floor Plaza # 10, CCA Block, DHA Phase 5
Lahore, 54810
Phone: +92(303)4444311
Email: Faisal.Khan@bosch.com
Philippines
Robert Bosch, Inc.
28th Floor Fort Legend Towers,
3rd Avenue corner 31st Street,
Fort Bonifacio, Global City,
1634 Taguig City
Tel.: (632) 8703871
Fax: (632) 8703870
www.bosch-pt.com.ph
Singapore
Powerwell Service Centre Ptd Ltd
Bosch Authorised Service Centre (Power Tools)
4012 Ang Mo Kio Ave 10, #01-02 TECHplace
Singapore 569628
Tel.: 6452 1770
Fax: 6452 1760
E-Mail: ask@powerwellsc.com
www.powerwellsc.com
www.bosch-pt.com.sg
Bosch Service – Training Centre
La Salle Tower Ground Floor Unit No.2
10/11 La Salle Moo 16
Srinakharin Road
Bangkaew, Bang Plee
Samutprakarn 10540
Tel.: 02 7587555
Fax: 02 7587525
Vietnam
Branch of Bosch Vietnam Co., Ltd in HCMC
14th floor, Deutsches Haus, 33 Le Duan
Ben Nghe Ward, District 1, Ho Chi Minh City
Tel.: (028) 6258 3690
Fax: (028) 6258 3692 - 6258 3694
Hotline: (028) 6250 8555
Email: tuvankhachhang-pt@vn.bosch.com
www.bosch-pt.com.vn
Bahrain
EA Juffali and Brothers for Technical Equipment Company.
Kingdom of Bahrain, Al Aker - Block 0624 - Road 2403 Building 0055D
Phone: +97317704537
Fax: +973177045257
Email: h.berjas@eajb.com.sa
Dallal Establishment for Power Tools
Damascus. Baramkeh street - Ibn Amer street,
Phone: +963112241006 or 009631122414009
Mobile: 00963991141005
Email: rita.dallal@hotmail.com
United Arab Emirates
Central Motors & Equipment,
P.O. Box 26255, Dubai
Dubai: 00971(0)43090920/3090930
Abu Dhabi: 00971(0)24017745
Sharjah: 00971(0)65932777
Al Ain: 00971(0)37157419
E- Mail: Mallappa.Madari@centralmotors.ae
Yemen
Abu Alrejal Trading Corporation
P.O. Box : 17024 , Zubeiry St.
Robert Bosch Ghana Limited
21 Kofi Annan Road Airport Residential Area Accra
Tel. +233(0)302794616
Kenya
Robert Bosch East Africa Ltd
Mpaka Road P.O. Box 856
00606 Nairobi
Nigeria
Robert Bosch Nigeria Ltd.
52–54 Isaac John Street P.O. Box
GRA Ikeja – Lagos
Tanzania
Diesel & Autoelectric Service Ltd.
117 Nyerere Rd., P.O. Box 70839
Vingunguti 12109, Dar Es Salaam
Phone: +255 222 861 793/794
Australia, New Zealand and Pacific Islands
Robert Bosch Australia Pty. Ltd.
Power Tools
Locked Bag 66
Clayton South VIC 3169
Customer Contact Center
Inside Australia:
Phone: (01300) 307044
Fax: (01300) 307045
Inside New Zealand:
Phone: (0800) 543353
Fax: (0800) 428570
Outside AU and NZ:
Phone: +61 3 95415555
www.bosch-pt.com.au
www.bosch-pt.co.nz
Republic of South Africa
Customer service
Hotline: (011) 6519600
Gauteng – BSC Service Centre
35 Roper Street, New Centre
Johannesburg
Tel.: (011) 4939375
Fax: (011) 4930126
E-Mail: bsctools@icon.co.za
TOO “Robert Bosch” Power Tools, After Sales Service
Muratbaev Ave., 180
050012, Almaty, Kazakhstan
Service Email: service.pt.ka@bosch.com
Official Website: www.bosch.com, www.bosch-pt.com
Transport
The contained lithium-ion batteries are subject to the Dangerous Goods Legislation requirements. The batteries are
suitable for road-transport by the user without further restrictions.
When shipping by third parties (e.g.: by air transport or forwarding agency), special requirements on packaging and labelling must be observed. For preparation of the item being
shipped, consulting an expert for hazardous material is required.
Dispatch battery packs only when the housing is undamaged. Tape or mask off open contacts and pack up the battery in such a manner that it cannot move around in the
packaging. Please also observe the possibility of more detailed national regulations.
Disposal
Power tools, rechargeable batteries, accessories and packaging should be sorted for environmental-friendly recycling.
Do not dispose of power tools and batteries/rechargeable batteries into household waste!
Battery packs/batteries:
Li-ion:
Please observe the notes in the section on transport (see
"Transport", page10).