Bosch GNA 2,0 Professional Notice Originale page 6

6 | English
Wear protective gloves during work and pay particu-
u
lar attention to the cord. Sharp burrs develop on the cut
sheets; these can cause injury or damage the cord.
Exercise caution when handling the cutting chips. The
u
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 takes place during the upward motion of the punch.
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.
If the punch should become wedged during cutting, switch
the power tool off, relubricate the punch and release the ten-
sion of the steel sheet. Do not exert force, otherwise the
punch and the die will become damaged.
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 follow-
ing thicknesses:
Material max. strength
(N/mm
Steel 400
600
800
Aluminium 200
Lubricating/cooling the punch
To extend the service life of the punch (5), 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.
For long periods of continual use or for work with high fric-
tional wear (e.g. when cutting aluminium), the application
tool should be immersed in a container of lubricant at regular
intervals.
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 tem-
plate.
For inside cuts, a hole with a diameter of 16 mm must be
pre-drilled.
Maintenance and Service
Maintenance and Cleaning
Pull the plug out of the socket before carrying out any
u
work on the power tool.
To ensure safe and efficient operation, always keep
u
the power tool and the ventilation slots clean.
1 609 92A 503 | (31.07.2019)
depends on
max
d
max
2
) (mm)
2.0
1.4
1.0
2.5
In order to avoid safety hazards, if the power supply cord
needs to be replaced, this must be done by Bosch or by an
after-sales service centre that is authorised to repair Bosch
power tools.
Clean and lubricate the punch (5) and die (4) 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 (5) and the die (4) may not be resharpened.
Changing the die
With the die (4) locked, loosen the clamping screw (3).
Unscrew the cap nut (2) using an open-ended spanner
(width across flats 30 mm). Pull the die (4) off.
Insert a new, well lubricated die (4). Retighten the cap
nut (2).
Changing the punch
To change the punch (5) remove the die (4) as described
above.
Then unscrew the hollow screw (6) and remove the
punch (5).
Insert a new, well lubricated punch (5) and tighten it with
the hollow screw (6). Reattach the die (4) as described
above.
Accessories/replacement parts
Die (universal)
Punch:
– For curved cuts
– For straight cuts
– Universal
For corrugated and sheet metal up to 1.2 mm thick:
– Die
– Set (punch/die)
After-Sales Service and Application Service
Our after-sales service responds to your questions concern-
ing 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 accessor-
ies.
In all correspondence and spare parts orders, please always
include the 10‑digit article number given on the nameplate
of the product.
Cambodia
Robert Bosch (Cambodia) Co., Ltd
Unit 8BC, GT Tower, 08th Floor, Street 169,
Czechoslovakia Blvd, Sangkat Veal Vong
Khan 7 Makara, Phnom Penh
VAT TIN: 100 169 511
Tel.: +855 23 900 685
2 608 639 900
2 608 639 013
2 608 639 016
2 608 639 022
2 608 639 021
2 608 639 902
Bosch Power Tools