Operator's manual
english
N 350 - 3
E301en1_2.doc N 350-3 GB 1
N i b b l e r N350-3 Fig. 10191
N350-3 specifications
Max. material thickness:
• Steel up to 400 N/mm² 3.5 mm
• Steel up to 600 N/mm² 2.3 mm
• Steel up to 800 N/mm² 1.8 mm
• Aluminium 250 N/mm² 3.5 mm
Smallest radius for curve-shaped cutouts 7 mm
Starting hole ∅ for die min. 30 mm
Cutting track width 14 mm
Working speed approx. 1.3 m/min
Nominal power consumption 1100W
Number of strokes under maximum load 530/min
Weight 4.6kg
Operating pressure (flow pressure) 6 bar
Air consumption at 6 bar 1.7 m³/min
Required inner ∅
of compressed air tube 18 mm
(maximum output is not reached
if ∅ is smaller)
Noise / Vibration
Measured values established according to EN 50144.
The A-weighted noise level of the unit is typically:
sound level 90 dB (A); acoustic capacity level
98 dB (A).
Wear ear protection!
The hand-arm vibration is typically lower than 2.5
m/s².
Proper use
The TRUMPF Nibbler N350-3 is a pneumatic hand
machine
• used to part plate-shaped workpieces made of
material such as aluminium, non-ferrous heavy
metals, and plastic
• to nibble straight or curved outer edges and inside
cutouts
• to nibble according to a scribed line or template
• to nibble using a guide device (optional)
Nibbling produces undistorted cutting edges.
The hollow punch of the nibbler allows you to rotate
the machine and continue machining in any direction.
GB
3 Die carrier
5 Liner (= knurled nut to
clamp the die)
6 Punch
7 Shaft
15 Handle
31 Locking lever ( = to clamp
the die carrier)
318 Lever and On/off switch
320 Pushbutton (retaining pin)
330 Quick-release coupling
S Chip ejection
2GB N 350-3 E301en1_2.doc
Safety instructions
Safe operation of the appliance is only
possible when the operator's manual and the
supplied safety information (red print,
TRUMPF order no. 125699) have been
completely read and the instructions contained
within have been strictly adhered to.
Danger of injury
Check the unit, compressed-air tube and
reception coupling before each use.
Have all damaged parts repaired by an expert.
Danger of injury
Hot chips are ejected from the chip ejector at
extremely high speeds. You should therefore
use a swarf box to collect the ejected chips.
Danger of injury
The machine is supported by the workpiece
as long as they are in contact when the
cutting arrangement is "normal" (workpiece is
horizontal). Remember that the entire weight
of the machine must be supported as soon
as the workpiece is cut, as the machine no
longer has contact to the workpiece. (aid:
hook with balancer or retaining rope).
Always wear safety glasses, ear
protection, protective gloves and
proper footwear when working with
the machine.
• Do not connect the compressed air unless the
machine is turned off.
• Always disconnect the compressed-air tube from
the machine before beginning any work on the
machine!
• Always guide the compressed-air tube back away
from the unit.
• Use only original TRUMPF accessories.
Before initial use
1. Read chapter on safety.
For your safety
2. Mount the handle (new machines are delivered
with the handle detached).
3. Check whether the installed tools (punch and
die) are suitable for the material that is to be
machined. Use special cutting tools for high-
tensile sheets (<400 N/mm²
Punch and die selection
4. Sharpen or replace the tools if blunt.
Regrind the tools
5. The flow pressure of the compressed air must
be 6 bar at the point of extraction.
6. Oil lubrication must take place for the
compressed-air motor.
Maintenance
E301en1_2.doc N 350-3 GB 3
Operating instructions
Damage to property
Check the tools for wear and the oil
lubrication of the compressed-air motor
every hour.
Never work with blunt tools!
(the compressed-air motor may stop).
Turning the unit on and off
Fig. 10220
Turning on the unit:
Press pushbutton 1 (releases compressed-air). Shift
lever 2 (= motor ON). The motor runs as long as the
lever is pressed. Pushbutton 1 can be released.
Turning off the unit:
Release lever 2 (the lever springs back into intial
position and the flow of compressed air is interrupted).
Damage to property
Do not begin machining the workpiece until
after the machine has been turned on and
has reached maximum speed!
The machine must never be turned off while
the punch is in the workpiece when the
cutting tracks end in the workpiece. In this
case, guide the machine back along the
freshly cut track a few millimeters before
turning it off.
Cooling and lubrication
The cutting results are improved and the service life of
the punch is increased if
• before machining the workpiece
the cutting track is coated with oil.
Recommended for steel:
Punching and nibbling oil, order no. 103387
Recommended for aluminium:
Wisura oil, order no. 125874
Changing the cutting direction Fig. 9766
The tool (i.e. the cutting direction) can be turned 90°
to the left or right if necessary, e.g. if space is
restricted.
• Loosen the locking lever (31).
• Turn the die carrier (3) 90° in the desired
direction.
• Close the locking lever (31).
Nibbling with a template
• The template should be at least 3-4 mm thick.
• The contour of the template should be 5.5 mm
away from the contour that is to be nibbled.
• The nibbler must be guided in such a way that the
outside edge of the punch guide always rests
against the template.
• Ensure that a minimum radius of 7 mm (punch
radius) is maintained.
Inner cutouts
Inner cutouts require a starting hole with a diameter of
at least 30 mm ∅.
1 Pushbutton 2 Lever
4GB N 350-3 E301en1_2.doc
Fig. 16462 + Fig. 16463
Punch and die selection
Two different tool sets may be used to machine
sheets with various tensile strengths:
Tensile strength of
the material to be
machined up to 400 N/mm² greater than
400 N/mm²
e.g Mild steel Chrome steel
Type of punch Punch (standard) Punch for
high-tensile sheets
Order no. (punch) 093538 103545
Distinctive
punch
features
Die type Die
(standard) Die for high-tensile
sheets
Order no. (die) 093536 103546
Distinctive die
features
Cr
Changing tools
Danger of injury
Always disconnect the compressed-air
tube from the machine before beginning
any work on the machine!
If the punch and/or the die are blunt, resharpen the
punch or change tools.
Resharpening tools
Detaching the punch Fig. 9766
a) Loosen the locking lever (31).
b) Turn the die carrier (3) 45°.
c) Pull the die carrier (3) out from the bottom.
d) Turn the punch 180° and pull it out from the
bottom.
Attaching the punch Fig. 9766
Grease the punch and die carrier opening lightly with
lubricating grease "S1" TRUMPF order no. 121486.
See "F" in Fig. 9766
Guide device (optional, order no. 104587)
The guide device can be used to produce workpieces
with parallel edges, circular cutouts etc.
A Parallel guide (rotated during circular cutting)
B 25-370 mm strips
C 60-750 mm diameter
D Circle guide (required borehole in workpiece:
∅ 10 mm)
E Starting hole > ∅ 30 mm
(if machining is to begin inside the sheet plate)
F Workpiece
Spacer for < 2 mm sheet (optional, order no. 110104)
When cutting sheets < 2 mm, this spacer (H) allows you
to adjust the clearance between stripper and die to the
respective sheet thickness.
Æ
1 0 C
D
Æ
3 0
B
E
F
> 2 - 3 , 5 m m
A
H
2 m m
E301en1_2.doc N 350-3 GB 5
Changing the die Fig. 9766
Loosen and push up the knurled nut (= liner 5) to
change the die (2).
• Clean the bearing surfaces of the die carrier (3).
• Tighten the new die in the die carrier with liner 5.
N350 punch change Fig. 9766
Resharpening tools
Punches can be resharpened until they reach the
specified minimum length.
• Sharpen the face of the punch and provide proper
cooling.
• Touch up the cutting edge with a fine oil stone.
• Ensure that the length is at least 51.5 mm.
Punches that are shorter must be replaced.
Punch (standard)
Order no. 093538
Punch
for high-tensile sheets
Order no. 103545
Punch for Nibbler N350 Fig. 9907
Dies cannot be resharpened.
2Die 6Punch
3 Die carrier 31 Locking lever
5 Liner (knurled nut for
clamping the die) F lubricating grease
"S1" TRUMPF
order no. 121486
6GB N 350-3 E301en1_2.doc
Maintenance
Danger of injury
Always disconnect the compressed-air
tube from the machine before beginning
any work on the machine!
Die carrier hole l u b r i c a t i o n
The bore hole in the die carrier into which the punch is
guided is to be lubricated after every tool change.
Original grease: Lubricating grease "S1" tube
TRUMPF order no. 121486
Gear/gear head l u b r i c a t i o n
Gear grease must be refilled or changed after repairs
but no later, however, than after 300 hours of
operation.
Original grease: Lubricating grease "G1"
TRUMPF order no. 139440
Alternative greases: BLASER Blasolube 308
BP Energrease HTB2
FUCHS Renoplex EP 1
MOBIL Mobiltemp SHC 32
Compressed-air motor l u b r i c a t i o n
Damage to property
Lubrication of the compressed-air motor
is very important. The motor will fail if it
is operated without lubrication even for a
short time.
Install oil lubricating device in the compressed-air
line (e.g. Atlas Copco DIM 25).
Checking the oil supply of the motor
Hold a piece of paper in front of the exhaust opening
in the motor housing while the machine is running.
The oil supply is sufficient if oil stains form.
Recommended oils (compressed-air motor
lubrication):
• BP Energol RD 80 (-15 to +10 °C),
• BP Energol RD-E80 (+10 to +30 °C),
• Shell Tellus Oil 15 (-15 to +10 °C),
• Torculla 33 (+10 to +30 °C).
Cleaning
Clean the filter screwed into the connecting piece
(328) every 10 operating hours in order to prevent
throttling or power loss. (Unscrew, blow out with
compressed air and retighten)
See the spare parts list for a diagram of item
328 .
Changing vanes
The performance of the machine decreases if the
vanes are excessively worn.
Vane replacement and all other repair work is to be
carried out by an expert!
Vane set (4) on the rotor of the compressed-
air motor. See Item 305 in the spare parts list
for corresponding diagram.
Repairs
Danger of injury
Pneumatic tools comply with the relevant
safety regulations. Repairs may only be
carried out by qualified electricians in order
to prevent unnecessary accidents.
Use only o r i g i n a l s p a r e p a r t s.
Please note the specifications on the output plate.
You will find a list of TRUMPF representatives
at the back of this operating manual.
E301en1_2.doc N 350-3 GB 7
Wearing parts
N350 Order no.
Standard punch 093538
Punch for high-tensile sheets 103545
Standard die 093536
Die for high-tensile sheets 103546
Original accessories
Accessories delivered with the machine
Description Order no.
Tool set (punch and die, installed)
Quick-release coupling (machine part) 114094
Quick-release coupling (hose part) 114095
Handle, complete 257239
Tube of lubricating grease "S1" 121486
(die carrier hole lubrication)
Case 982540
Operating manual 255697
Safety instructions (red print) 125699
Optional
Chip bag 097210
Guide device 104587
Punching and nibbling oil for steel (0.5l) 103387
Punching and nibbling oil for aluminium (1l) 125874
Hook 097208
Spacer for < 2 mm sheet 110104
When cutting sheets < 2 mm, this spacer allows you
to adjust the clearance between stripper and die to the
respective sheet thickness (see fig. 16463, item H).
Ordering spare parts and wearing
parts
To avoid delays and incorrect deliveries, please order
spare parts as follows:
• When ordering replacement parts, please use the
TRUMPF order number for the corresponding
part.
• More about ordering:
For electrical parts: Voltage data
Number required
Machine type
• Information required for shipping:
Your exact address
Desired mode of shipment (e.g. air mail, express
mail, ordinary freight, parcel post, etc.)
• Send your order to your TRUMPF representative.
You will find a list of TRUMPF
representatives at the back of this operating
manual.
Notes on documentation
The document was written by the Technical
Documentation department of TRUMPF
Werkzeugmaschinen GmbH + Co. KG
All rights reserved, particularly those concerning the
duplication, distribution and translation of this
documentation, even in the event of property right
registration.
TRUMPF Werkzeugmaschinen GmbH + Co. KG
8GB N 350-3 E301en1_2.doc
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