Plates and labels .......................................................... " 30
Ordering spare part
- When ordering spare parts you must state:
MACHINE MODEL
SERIAL NUMBER
PART REFERENCE NUMBER
Without these references WE WILL NOT SUPPLY the spares. See point 10.1 - list of spare parts -
Guarantee
- The Company guarantees that the machine to which this manual refers has been designed and built to comply with safety regulations and that it has been tested for functionality in the factory.
- The machine is guaranteed for 12 months: the guarantee does not cover the electric motors, electric components, pneumatic
components or any damage due to dropping or to bad machine management, the failure to observe maintenance standards or bad
handling by the operator.
- The buyer has only the right to replacement of the faulty parts, while transport and packing costs are at his expense.
- The serial number on the machine is a primary reference for the guarantee, for after-sales assistance and for identifying the
machine for any necessity.
2
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Machine certification and identification marking
MACHINE LABEL
via Pasubio, 32 36033 ISOLA VIC. - ITALIA
TRAD 300 MMTRAD 300 MM
TRAD 300 MM
TRAD 300 MMTRAD 300 MM
MODEL
TYPE
SERIAL NUMBER
YEAR OF MANUFACTURE
SUPER TRAD 300
MULTI MODE
(Space reserved for the NAME and STAMP of the DEALER and/or IMPORTER)
3
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REFERENCE TO ACCIDENT - PREVENTION REGULATIONS
1
This machine has been built to comply with the national and community accident-prevention regulations in force. Improper use
and/or tampering with the safety devices will relieve the manufacturer of all responsibility.
1.1 - Advice for the operator
- Check that the voltage indicated on the plate, normally fixed to the machine motor, is the same as the line voltage.
- Check the efficiency of your electric supply and ear thing system; connect the power cable of the machine to the socket and the
earth lead (yellow-green in colour) to the earthing system.
- When the saw frame is in suspend mode (up) the toothed blade must not move.
- Only the blade section used for cutting must be kept unprotected. Remove guarding by operating on the adjustable head.
- It is forbidden to work on the machine without its shields (these are all white, blue or grey in colour).
- Always disconnect the machine from the power socket before blade change or carrying out any maintenance job, even in the case
of abnormal machine operation.
- It is f orbidden to disconnect the "man present" device , known more correctly in the EEC as the " safety switch with hold-down action"
- Always wear suitable eye protection.
- Never put your hands or arms into the cutting area while the machine is operating.
- Do not shift the machine while it is cutting.
- Do not wear loose clothing with slee ves that are too long, gloves that are too big, bracelets, chains or any other object that could get
caught in the machine during operation; tie back long hair.
- Keep the area free of equipment, tools or any other object.
- Perform only one operation at a time and never have several objects in your hands at the same time. Keep your hands as clean as
possible.
- All internal and/or internal operations, maintenance or repairs, must be performed in a well-lit area or where there is sufficient light
from extra sources so as to avoid the risk of even slight accidents.
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1.2 - Location of shields against accidental contact with the tool
- Blue, grey right and left hand metal shields, fastened with screws onto the guide blade stationary head ( Rif. A ).
- Blue or grey metal shield fastened with screws onto the blade guide adjustable head, ensures covering of blade section not used in
cutting operation ( Rif. B ).
- Grey metal guard, fastened with knobs onto the saw frame, to protect from flywheels ( Rif. C ).
C
B
A
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1.3 - Electrical equipment according to Euro-pean Standard"CENELEC EN 60 204-1" whic h assimilates,
with some integrating modifications, the publication "IEC 204-1"
- The electrical equipment ensures protection against electric shock as a result of direct or indirect contact. The active parts of this
equipment are housed in a box to which access is limited by screws that can only be removed with a special tool; the parts are fed
with alternating current at low voltage (24 V). The equipment is protected against splashes of water and dust.
- Protection of the system against short circuits is ensured by means of rapid fuses and earthing; in the event of motor overload,
protection is provided by a thermal probe.
- In the event of a power cut, the specific start-up button must be reset.
- The machine has been tested in conformity with EN 60204.
1.4 - Emergencies according to European Standard "CENELEC EN 60 204-1"
- In the event of incorrect operation or of danger conditions, the machine may be stopped immediately by pressing the red mushro om
button.
- The casual or voluntary removal of the protection shield of the flywheels causes the stepping-in of a microswitch that automatically
stops all machine functions.
- In case blade breaks, the tightening micro switch stops all machine functions.
NOTE:Resetting of machine operation after each emergency stop is achieved by reactivating the specific restart button.
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RECOMMENDATIONS AND ADVICE FOR USE
2
2.1 - Recommendations and advice for using the machine
- The machine has been designed to cut metal building materials, with different shapes and profiles, used in workshops, turner’s
shops and general mechanical structural work.
- For the use of the machine, one operator having basic technical knowledge should stand in the position shown here below:
- Before starting each cutting operation, ensure that the part is firmly gripped in the vice and that the end is suitably supported.
These figures show examples of suitable clamping of different section bars, bearing in mind the cutting capacities of the machine in
order to achieve a good efficiency and blade durability.
- Do not use blades of a different size from those stated in the machine specifications.
- If the blade gets stuck in the cut, release the running button immediately, switch off the machine, open the vice slowly, remove the
part and check that the blade or its teeth are not broken. If they are broken, change the tool.
- Check saw frame return spring to ensure proper balancing.
- Before carrying out any repairs on the machine, consult the dealer or apply to THOMAS.
5
TECHNICAL
3
CHARACTERISTICS
3.1 - T ab le of cutting capacity and technical details
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MACHINE DIMENSIONS
TRANSPORT
4
INSTALLATION
DISMANTLING
4.1 - Machine dimensions
0°
45°
45° DX
60°
BLADE MOTORKw1 - 1,4
COOLANT LIQUID
MOTOR
BLADE DIMENSIONSmm2750 x 27 x 0,9
255250300 x 200
160140170 x 120
190180190 x 170
110110110 x 150
If the machine has to be shifted in its own packing, use a forklift truck or sling it with straps as illustrated.
4.3 - Minimum requirements for the premises
housing the machine
- Mains voltage and frequency complying with the machine
motor characteristics.
- Environment temperature from -10 °C to +50 °C.
- Relative humidity not over 90%.
- Position the machine on a firm cement floor, maintaining, at
the rear, a minimum distance of 1000 mm from the wall; anchor it to the ground as shown in the diagram, using screws
and expansion plugs or tie rods sunk in cement, ensuring that
it is sitting level.
4.5 - Instructions for electrical connection
- The machine is not provided with an electric plug, so the customer must fit a suitable one for his own working conditions:
1 - WIRING DIAGRAM FOR 4-WIRE SYSTEM FOR THREE-
PHASE MACHINE - SOCKET FOR A 16A PLUG
R = L1
S = L2
T = L3
PE = GND
4.6 - Instructions for assembly of the loose parts
and accessories
Fit the components supplied:
- Mount bar-stop rod
4.4 - Anchoring the machine
355
8080
PROFILO BASAMENTO
80.080.0
355
355
355
884
- Mount and align the roll supporting arm as per the countervice table.
- Mount the metal protection against coolant splashing on the
left side of the machine base.
4.7 - Disactivating the machine
- If the sawing machine is to be out of use f or a long period, it is
advisable to proceed as follows:
1)detach the plug from the electric supply panel
2)loosen blade
3)release the arch retur n spring
4)empty the coolant tank
5)carefully clean and grease the machine
6)if necessar y, cover the machine.
FRONTE
MACCHINA
7
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4.8 - Dismantling
(because of deterioration and/or obsolescence)
General rules
If the machine is to be permanently demolished and/or scrapped,
divide the material to be disposed of according to type and composition, as follows:
1) Cast iron or ferrous materials, composed of
secondary raw materials, so they may be taken to an iron
foundry for re-smelting after having removed the contents
(classified in point 3);
2) electrical components, including the cable and electronic material (magnetic cards, etc.), fall within the category of material classified as being assimilable to urban waste according to the laws of the European community, so they may be
set aside for collection by the public waste disposal service;
3) old mineral and synthetic and/or mixed oils, emulsified oils
and greases are special refuse, so they must be collected,
transported and subsequently disposed of by the old oil disposal service.
NOTE:since standards and legislation concerning refuse in gen-
eral is in a state of continuous evolution and therefore
subject to changes and variations, the user must keep
informed of the regulations in force at the time of disposing of the machine tool, as these may differ from those
described above, which are to be considered as a general guide line.
metal alone, are
5.2 - Vice
- System fro clamping the material during the cutting operation, operated with approach handwheel and locking lever or
by a pneumatic device (optional).
MACHINE FUNCTIONAL
5
PARTS
5.1 - Operating head or saw frame
- Machine part consisting of the members that transfer the motion (gearmotor, flywheels), and tension/guide (blade-guides,
blade tension slide) and lowering control (optional) of tool.
5.3 - Bed
- Support structure for the OPERA TING HEAD OR SA W FRAME
(rotating arm for gradual cutting, with respective blocking system), the ELECTRIC BOX, the VICE, the BAR STOP, the material support ROLLER and the housing for the cutting coolant TANK and pump.
8
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DESCRIPTION OF THE
6
OPERATING CYCLE
Before operating, all the main organs of the machine must
be set in optimum conditions (see the chapter on “Regulat-
ing the machine”).
6.1 - Starting up and cutting cycle
CUTTING CYCLE
-Manual vice locking;
-Manual sawframe downfeed;
-Manual sawframe lift;
-Manuale vice opening.
- Make sure the machine is not in emergency stop; if so, release the red mushroom push-button.
- Tur n the blade tension Handwheel ( 2 ) clockwise untill the
microswitch button ( 3 ) is pressed down.
- Select the cutting speed on switch ( 5 ):
position 1 = 33 m/min
position 2 = 66 m/min
ATTENTION: Make sure that the vice has been positioned to
the far right or left of the countervice to avoid accidental impact
with the sawblade. Also make sure that the relevant lever has
been locked
- Place the piece to be cut inside the vice by moving jaw to
about 3 - 4 mm and lock with lever ( 8 pag. 11 ).
- Strike the start/reset push-button ( 6 ).
- Tur n the selector ( 4 ) to the desired function mode:
(also see Chapter 7 paragraph 7.3)
.
2
5
3
6
Cutting cycle selection
MANUAL MODE WITH DOWNFEED DAMPER
- As you turn the selector ( 4 ) to the left ( see figure A ), you
can pull down the sawframe manually at the feed rate set on
the regulator ( 9 ).
- If you w ant to approach the sawframe to the workpiece quic kly
( blade not started ), press the button located on top of the
trigger switch ( 6 - figure D ); as you release the button, the
sawframe stops.
- Press the trigger switch ( 7 - figure D ) to start the blade and
pull down the sawframe manually to cut the workpiece. The
motor will stop automatically as soon as you release the trigger
switch..
Note: the sawframe return spring ( 8 - figure E ) must be
tensioned as much as to counterbalance the weight of the
sawframe.
FIGURA A
4
1
9
9
MANUAL MODE
- Turn the selector ( 4 ) to the center ( see figure B ) to pull
down the sawframe with no damping.
- Start the blade by pressing the trigger switch ( 7 - figure D )
and pull down the sawframe to cut y our workpiece. The motor
will stop at the end of the cut as soon as you release the
trigger switch..
Note: the sawframe return spring ( 8 - figure E ) must be
tensioned as much as to counterbalance the weight of the
sawframe.
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FIGURE D
6
FIGURE B
SELF DOWNFEED MODE
- As you turn the selector ( 4 ) to the right ( see figure C ), you
allow the automatic sawframe downfeed.
- Release the tension of the spring ( 8 - figure E ) by means of
the relevant lever.
- You can approach the sawframe to the workpiece quickly by
pressing the button ( 6 - figure D ); we advise to approach the
blade up to 10mm from the workpiece.
- Press the trigger switch ( 7 - figure D ) to start the blade. The
sawframe will feed down automatically to cut the workpiece.
The motor will stop automatically at the end of the cut by a
special endstroke microswitch.
- Adjust the sawframe downfeed rate on the regulator ( 9 ) according to the specifications of your workpiece.
7
8
FIGURE E
10
FIGURE C
Tension spring position
Release spring position
- Once you selected the function mode ( see paragraph 6.1 ),
place the piece to be cut inside the vice by moving jaw to
about 3 - 4 mm and lock with lever ( 8 ).
- Reach for handgrip ( 7 ) of the SAW FRAME control lever,
strike the push-button and check that the blade is tur ning in
the direction indicated ( if not, invert the two phase leads);
- Make sure that the cooling liquid flows regularly.
8
ò
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REGULATING
7
THE MACHINE
7.1 - Blade tension assembly
The ideal tension of the blade is achie ved rotating the handwheel
until it stops against the microswitch button ( A ).
WARNING: the projection of the microswitch is f actory set during
inspection, after having tightened the blade on the lengthening
values indicated by its manufacturer as per specific dimensions
set with the help of a special gauge. If, when replacing the b lade,
the thickness and the width differ, it will be necessary to correct
the projection of the microswitch. For this purpose we suggest
to strictly select blades having the same features as the ones
mounted originally.
A
Ne pas approcher les mains ou les bras à la
zone
de coupe quand la machine fonctionne.
Note: In case the saw is not used for a period of time, release
the blade tension to avoid useless stress.
The band saw is now ready to start work, bearing in mind that
the CUTTING SPEED and the TYPE of BLADE - combined with
a suitable descent of the head - are of decisive importance for
cutting quality and for machine performance (for further details
on this topic, see below in the chapter on “Material classifica-
tion and blade selection”).
- When starting to cut with a new blade, in order to safe-
guard its life and efficiency, the first two or three cuts
must be made while exerting a slight pressure on the part,
so that the time taken to cut is about double the normal
time (see below in the chapter on “Material classification
and blade selection” in the section on
- Press the red emergency button ( 1 ) when there are condi-
tions of danger or malfunctions in general, so as to stop ma-
chine operation immediately.
Blade running-in
).
7.2 - Blade guide blocks
The blade is guided by means of adjustable pads set in place
during inspection as per the thickness of the blade with minimum play as shown in the figure.
11
In case the blade needs to be replaced, make sure to always
install 0.9 mm thick blades for which the blade guide pads have
been adjusted. In the case of toothed b lades with diff erent thic knesses adjustment should be carried out as follows:
- Loosen nut ( C ), screw ( B ) and loosen dowel ( D ) widening
the passage between the pads.
- Loosen the nuts ( H ) and the dowels ( I ) and rotate the pins
( E - G ) to widen the passage between the bearings ( F ).
- Mount the new blade, place the pad ( A ) on the blade and,
loosening the dowel, allow a play of 0.04 mm for the sliding of
the toothed blade; lock the relative nut and screw ( B ):
- Rotate the pins ( E - G ) until the bearings rest against the
blade as indicated in the figure and then secure the dowels ( I
) and nut ( H ).
- Make sure that between the blade and the upper teeth of the
pad ( L ) this is at least 0.2 - 0.3 mm of play; if necessar y,
loosen the screws that fasten the blocks and adjust accordingly.
7.3 - Vice
- The vice can be positioned either to the right or to the left of
the blade. Tight Lever ( 2 ) after positioning the vice to the far
right/left. The vice can slide very quickly by meand of the
handle ( 1 ); in case the the vice moves too loose along the
guide, tight the screws ( 3 ).
- Approach the vice jaw allowing 3-4 mm clearance between
jaw and material.
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3
4
5
2
7.5 - Cutting angle adjustment
- Unlock lever ( 11 ) and rotate the saw frame arm until you
reach mechanical stop and check if the index corresponds to
45°; if not operate on the set screws to make measures meet.
3
1
2
7.4 - Saw frame lowering control device
It is an accessory, ideal for the cutting of thin or STAINLESS
STEEL section bars, that determines a constant lowering and
consequently a good efficiency of the blade throughout the work
phase. By adjusting the ring nut on the base ( 9 ), this device
can be accommodated to the different situations and applications. Defectiveness in the control of the low ering may be caused
by the drop in braking power of the device due to the long-term
blow-by of the braking fluid.
Push rod (2) back into its seat and loosen plug (3). Use recommended oil to top up oil tank (4) with the help of a syringe-type
pump. Bleed air, after ha ving tightened plug (3) and loosen screw
(5) lightly until a little oil drip out; when this has been completed, secure the screw.
Use SHELL HYDRAULIC OIL 32 or similar.
11
7.6 - Blade cleaning brush
It is an ideal accessory for the cleaning of the blade during the
cutting cycle. P eriodically chec k the condition of the brush and if
necessary proceed to further adjustment to ensure cleaning of
the blade.
12
BEFORE PERFORMING THE FOLLOWING OPERATIONS,
THE ELECTRIC POWER SUPPLY AND THE POWER CABLE
MUST BE COMPLETELY DISCONNECTED.
7.7 - Changing the blade
To change the blade:
- Lift the saw frame.
- Loosen the blade with the handwheel, remove the mobile
blade-guard cover, open the flywheel guards and remove the
old blade from the flywheels and the blade guide blocks.
- Assemble the new blade by placing it first between the pads
and then on the race of the flywheels, paying particular attention to the cutting direction of the teeth.
- Tension the blade and make sure it perfectly fits inside the
seat of the flywheels.
- Assemble the mobile blade-guide enf the flywheel guard and
fasten it with the relative knobs. Check that the safety
microswitch is activated otherwise when electric connection
will be restored the machine will not start.
WARNING: always assemble blades having dimensions speci-
fied in this manual and for which the blade guide
heads have be set: otherwise, see chapter on “Description of the operating cycle” in the section Starting-up.
7.8 - Replacing saw frame return spring
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8.1 - Daily maintenance
- General cleaning of the machine to remove accumulated shavings.
- Clean the lubricating coolant drain hole to avoid excess fluid.
- Top up the level of lubricating coolant.
- Check blade for wear.
- Rise of saw frame to top position and partial slackening of the
blade to avoid useless yield stress.
- Check functionality of the shields and emergency stops.
8.2 - Weekly maintenance
- More accurate general cleaning of the machine to remove
shavings, especially from the lubricant fluid tank.
- Removal of pump from its housing, cleaning of the suction
filter and suction zone.
- Clean the filter of the pump suction head and the suction
area.
- Cleaning with compressed air the blade guide heads (guide
bearings and drain hole of the lubricating cooling).
- Cleaning flywheel housings and blade sliding surfaces on flywheels.
8.3 - Monthly maintenance
- Check the tightening of the motor flywheel screws.
- Check that the blade guide bearings on the heads are perfect
running condition.
- Check the tightening of the screws of the gearmotor, pump
and accident protection guarding.
8.4 - Six-monthly maintenance
- Continuity test of the equipotential protection circuit.
8.5 - Maintenance of the operating machine
members
The worm drive gear box mounted on the machine is maintenance-free guaranteed by its manufacture.
- When performing this operation it is necessary to keep saw
frame up using the lifting device.
- Replace the spring by loosening the upper coupling rod and
releasing it from the lower tie-rod.
RELY ON SKILLED AND QUALIFIED PERSONNEL TO REPLACE OTHER MA CHINE MEMBERS SUCH AS REDUCTION
UNIT OR VARIATOR, PUMP MOTOR AND ELECTRICAL
COMPONENTS.
ROUTINE
AND SPECIAL
8
MAINTENANCE
THE MAINTENANCE JOBS ARE LISTED BELOW , DIVIDED
INTO DAILY, WEEKLY, MONTHLY AND SIX-MONTHLY INTERVALS. IF THE FOLLOWING OPERATIONS ARE NEGLECTED, THE RESULT WILL BE PREMATURE WEAR
OF THE MACHINE AND POOR PERFORMANCE.
8.6 - Oils for lubricating coolant
Considering the vast range of products on the market, the user
can choose the one most suited to his own requirements, using
as reference the type SHELL LUTEM OIL ECO.
THE MINIMUM PERCENTAGE OF OIL DILUTED IN WATER
IS 8 - 10 %.
8.7 - Oil disposal
The disposal of these products is controlled by strict regulations. Please see the Chapter on “Machine dimensions -Transport - Installation” in the section on
Dismantling
.
8.8 - Special maintenance
Special maintenance operations must be carried out by skilled
personnel. However, we advise contacting THOMAS or their
dealer and/or importer. Also the reset of protective and safety
equipment and devices, of the reducer, the motor, the motor
pump and electric components is to be considered extraordinary maintenance.
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MATERIAL
CLASSIFICATION AND
9
CHOICE OF TOOL
Since the aim is to obtain excellent cutting quality, the various parameters such as hardness of the material, shapeand thickness, transverse cutting section of the par t to
be cut, selection of the type of cutting blade, cuttingspeed and control of saw frame lowering.These specifications must therefore be harmoniously combined in a single operating condition according to practical considerations
and common sense, so as to achieve an optimum condition
that does not require countless operations to prepare the
machine when there are many variations in the job to be
performed.The various problems that crop up from time to
time will be solved more easily if the operator has a good
knoledge of these specifications.
WE THEREFORE RECOMMEND YOU TO ALWAYS USE
GENUINE SP ARE BLADES THAT GUARANTEE SUPERIOR
QUALITY AND PERFORMANCE.
9.1 - Definition of materials
The table at the foot of the page lists the characteristics of the
materials to be cut, so as to choose the right tool to use.
words, the number of teeth per inch (25,4 mm) suitable for
thematerial to be cut, according to these criteria:
- parts with a thin and/or variable section such as profiles, pipes
and plate, need close toothing, so that the number of teeth
used simultaneously in cutting is from 3 to 6;
- parts with large transverse sections and solid sections need
widely spaced toothing to allow for the greater volume of the
shavings and better tooth penetration;
- parts made of soft material or plastic (light alloys, mild bronze,
teflon, wood, etc.) also require widely spaced toothing;
- pieces cut in bundles require combo tooth design.
9.3 - Teeth pitch
As already stated, this depends on the following factors:
- hardness of the material
- dimensions of the section
- thickness of the wall.
BLADE TEETH SELECTION TABLE
THICKNESS MM
TILL 1.51410/14
FROM 1 TO 288/12
FROM 2 TO 366/10
FROM 3 TO 565/8
FROM 4 TO 664/6
MORE THAN 644/6
Z CONTINUOUS
TOOTH DESIGN
Z COMBO
TOOTH DESIGN
9.2 - Selecting blade
First of all the pitch of the teeth must be chosen, in the other
TYPES OF ST EELCHARACTERISTICS
USE
Construction
steels
Carbon
steels
Spring
steels
Alloyed steels for
hardening and
tempering and for
nitriding
Alloyed
casehardening
steels
Alloyed for
bearings
Tool steel
Stainless
steels
Copper alloys
Special brass
Bronze
Cast iron
I
UNI
Fe360
Fe430
Fe510
C20
C40
C50
C60
50CrV4
60SiCr8
35CrMo4
39NiCrMo4
41CrAlMo7
18NiCrMo7
20NiCrMo2
100Cr6100Cr6100C6534 A 995210020795690÷980
52NiCrMoKU
C100KU
X210Cr13KU
58SiMo8KU
X12Cr13
X5CrNi1810
X8CrNi1910
X8CrNiMo1713
Aluminium copper alloy G-CuAl11Fe4Ni4 UNI 5275
Special manganese/silicon brass G-CuZn36Si1Pb1 UNI5038
Manganese bronze SAE43 - SAE430
Phosphor bronze G-CuSn12 UNI 7013/2a
Gray pig iron G25
Spheroidal graphite cast iron GS600
Malleable cast iron W40-05
TILL 3085/8
FROM 30 TO 6064/6
FROM 40 TO 804
MORE THAN 903
Z CONTINUOUS
TOOTH DESIGN
Ø = DIAMETER L = WIDTH
Z COMBO
TOOTH DESIGN
4/6
3/4
9.4 - Cutting and advance speed
The cutting speed (m/min) and the advance speed (cm2/min =
area travelled by the disk teeth when removing shavings) are
limited by the development of heat close to the tips of the teeth.
- The cutting speed is subordinate to the resistance of the material (R = N/mm
sions of the widest section.
- Too high an advance speed (= lowering of the saw frame)
tends to cause the disk to deviate from the ideal cutting path,
producing non rectilinear cuts on both the vertical and the
horizontal plane.
The best combination of these two parameters can be seen
directly examining the chips.
2
), to its hardness (HRC) and to the dimen-
9.7 - Blade type
They differ essentially in their constructive characteristics, such
as:
- shape and cutting angle of tooth
- pitch
- set
Shape and angle of tooth
REGULAR TOO TH: 0° rake and constant pitch.
Most common form for transversal or inclined cutting of solid
small and average cross-sections or pipes, in laminated mild
steel and grey iron or general metal.
Very fine or pulverized chips indicate lack
of feed and/or cutting pressure.
Thick and/or blue chips indicate overload
of the blade.
9.5 - Blade running-in
When cutting for the first time, it is good practice to run in
the tool making a series of cuts at a low advance speed
(= 30-35 cm
spect to the cutting capacity and solid section of normal steel
with R = 410-510 N/mm
area with lubricating coolant.
2
/min on material of average dimensions with re-
2
), generously spraying the cutting
Particular use for crosswise or inclined cuts in solid sections or
large pipes, but above all harder materials (highly alloyed and
stainless steels, special bronze and forge pig).
COMBO TOO TH: pitch varies between teeth and consequently
varying teeth size and varying gullet depths. Pitch varies between teeth which ensures a smoother, quieter cut and longer
blade life owing to the lack of vibration.
distance between teeth
Another advantage offered in the use of this type of blade in the
fact that with an only blade it is possible to cut a wide range of
different materials in size and type.
COMBO TOO TH: 9° - 10° positive rake.
positive
9.6 - Blade structure
Bi-metal blades are the most commonly used. They consist in a
silicon-steel blade backing with electron beam or laser welded
high speed steel (HHS) cutting edge. The type of stocks are
classified in M2, M42, M51 and differ from each other because
of their major hardness due to the increasing percentage of
Cobalt (Co) and molybdenum (Mo) contained in the metal alloy.
This type of blade is the most suitable for the cutting of section
bars and large and thick pipes as well as for the cutting of solid
bars at maximum machine capacity. Available pitches: 3-4/4-6.
15
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Set
Saw teeth bent out of the plane of the saw body, resulting in a
wide cut in the workpiece.
REGULAR OR RAKER SET: Cutting teeth right and left, alternated by a straight tooth.
Of general use for materials with dimensions superior to 5 mm.
Used for the cutting of steel, castings and hard nonferrous materials.
WAVY SET: Set in smooth waves.
9.7.1 - RECOMMENDED CUTTING PARAMETERS
This set is associated with very fine teeth and it is mainly used
for the cutting of pipes and thin section bars (from 1 to 3 mm).
ALTERNATE SET (IN GROUPS): Groups of cutting teeth right
and left, alternated by a straight tooth.
This set is associated with very fine teeth and it is used for
extremely thin materials (less than 1 mm).
ALTERNATE SET (INDIVIDUAL TEETH): Cutting teeth right
and left.
This set is used for the cutting of nonferrous soft materials,
plastics and wood.
SB1Mushroom button
SB2Luminous button
HLPilot lamp
KMRemote-control switch
ST1Band motor
temperature probe
THOMAS
THOMAS
23
- Schema Idraulico
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12
This chapter lists the probable faults and malfunctions that could occur while the machine is being used and suggests possible
remedies for solving them.
The first paragraph provides diagnosis for TOOLS and CUTS, the second for ELECTRICAL COMPONENTS.
TROUBLESHOOTING
12.1 - Blade and cut diagnosis
FAULTPROBABLE CAUSEREMEDY
TOOTH BREAKAGE
Too fast advance
Wrong cutting speed
Wrong tooth pitch
Chips sticking onto teeth and in the
gullets or material that gums
Defects on the material or material too
hard
Ineffective gripping of the part in the
vice
The blade gets stuck in the material
Starting cut on sharp or irregular section bars
Poor quality blade
Previously broken tooth left in the cut
Cutting resumed on a groove made
previously
Vibrations
Wrong tooth pitch or shape
Insufficient lubricating refrigerant or
wrong emulsion
Teeth positioned in the direction opposite the cutting direction
Decrease advance, exerting less cutting
pressure. Adjust the braking device.
Change speed and/or type of blade.
See chapter on “Material classificationand blade selection”, in the section
Blade selection table according to cutting
and feed speed.
Choose a suitable blade. See Chapter
“Material classification and blade selection”.
Check for clogging of cooling liquid drain
holes on the blade-guide blocks and that
flow is plentiful in order to facilitate the
removal of chips from the blade.
Material surfaces can be oxidised or covered with impurities making them, at the
beginning of the cut, harder that the blade
itself, or have hardened areas or inclusions inside the section due to productive agents used such as casting sand,
welding wastes, etc. Avoid cutting these
materials or in any case perform cutting
with extreme care, cleaning and removing such impurities as quickly as possible.
Check the gripping of the part.
Reduce feed and exert less cutting pressure.
Pay more attention when you start cutting.
Use a superior quality blade.
Accurately remove all the parts left in.
Make the cut elsewhere, turning the part.
Check gripping of the part.
Replace blade with a more suitable one.
See “Material classification and bladeselection” in the
Adjust blade guide pads.
Check level of liquid in the tank. Increase
the flow of lubricating refrigerant, checking that the hole and the liquid outlet pipe
are not blocked.
Check the emulsion percentage.
Turn teeth in correct direction.
Blade Types
section.
25
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FAULTPROBABLE CAUSEREMEDY
PREMATURE BLADE WEAR
Faulty running-in of blade
Teeth positioned in the direction opposite the cutting direction
Poor quality blade
Too fast advance
Wrong cutting speed
Defects on the material or material too
hard
Insufficient lubricating refrigerant or
wrong emulsion
See “Material classification and bladeselection” in the
tion.
Turn teeth in correct direction.
Use a superior quality blade.
Decrease advance, exerting less cutting
pressure. Adjust the braking device.
Change speed and/or type of blade.
See chapter on “Material classificationand blade selection”, in the section
Blade selection table according to cutting
and feed speed.
Material surfaces can be oxidised or covered with impurities making them, at the
beginning of the cut, harder that the blade
itself, or have hardened areas or inclusions inside the section due to productive agents used such as casting sand,
welding wastes, etc. Avoid cutting these
materials or in any case perform cutting
with extreme care, cleaning and removing such impurities as quickly as possible.
Check level of liquid in the tank. Increase
the flow of lubricating refrigerant, checking that the hole and the liquid outlet pipe
are not blocked.
Check the emulsion percentage.
Blade running-in
sec-
BLADE BREAKAGE
Faulty welding of blade
Too fast advance
Wrong cutting speed
Wrong tooth pitch
Ineffective gripping of the part in the
vice
Blade touching material at beginning
of cut
The welding of the blade is of utmost importance. The meeting surfaces must
perfectly match and once they are welded
they must have no inclusions or bubbles;
the welded part must be perfectly smooth
and even. They must be evenly thick and
have no bulges that can cause dents or
instant breakage when sliding between
the blade guide pads.
Decrease advance, exerting less cutting
pressure. Adjust the braking device.
Change speed and/or type of blade.
See chapter on “Material classificationand blade selection”, in the section
Blade selection table according to cutting
and feed speed.
Choose a suitable blade. See Chapter
“Material classification and blade selection”.
Check the gripping of the part.
At the beginning of the cutting process,
never lower the saw frame before starting the blade motor.
26
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FAULTPROBABLE CAUSEREMEDY
STREAKED OR ETCHED BANDS
Blade guide pads not regulated or dirty
because of lack of maintenance
Blade guide block too far from material to be cut
Improper position of blade on flywheels
Insufficient lubricating refrigerant or
wrong emulsion
Damaged or chipped blade guide
pads
Tight or slackened blade guide bearings
Check distance between pads (see “Ma-chine adjustments” in the
Blocks
section): extremely accurate guiding may cause cracks and breakage of
the tooth. Clean carefully.
Approach head as near as possible to
material to be cut so that only the blade
section employed in the cut is free, this
will prevent deflections that would excessively stress the blade.
The back of blade rubs against the support due to deformed or poorly welded
bands (tapered), causing cracks and
swelling of the back contour.
Check level of liquid in the tank. Increase
the flow of lubricating refrigerant, checking that the hole and the liquid outlet pipe
are not blocked. Check the emulsion percentage.
Replace them.
Adjust them (see Chapter “Machine ad-justments” in
Blade guide
Blade Guide
section).
CUTS OFF THE STRAIGHT
Blade not parallel as to the countervice
Blade not perpendicular due to the
excessive play between the guide
pads and maladjustment of the blocks
Too fast advance
Blade guide block too far from material to be cut
Worn out blade
Wrong tooth pitch
Check fastenings of the blade guide
blocks as to the counter-vice so that they
are not too loose and adjust blocks vertically; bring into line the position of the
degrees and if necessary adjust the stop
screws of the degree cuts.
Check and vertically re-adjust the blade
guide blocks; reset proper side guide play
(see Chapter “Machine adjustments” in
Blade guide
Decrease advance, exerting less cutting
pressure. Adjust the braking device.
Approach it as near as possible to material to be cut so that only the blade section employed in the cut is free, this will
prevent deflections that would excessively
stress the blade.
Replace it.
Blade with major density of teeth is being
used, try using one with less teeth (see
Chapter “Material classification andblade selection” in the
tion).
section).
Blade T ypes
sec-
27
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FAULTPROBABLE CAUSEREMEDY
FAULTY CUT
STREAKED CUTTING SURFACE
Broken teeth
Insufficient lubricating refrigerant or
wrong emulsion
Worn out flywheels
Flywheel housing full of chips
Too fast advance
Poor quality blade
Worn out blade or with chipped and/
or broken teeth
Wrong tooth pitch
Blade guide block too far from material to be cut
Irregular work of the blade due to the lack
of teeth can cause deflection in the cut;
check blade and if necessary replace it.
Check level of liquid in the tank. Increase
the flow of lubricating refrigerant, checking that the hole and the liquid outlet pipe
are not blocked.
Check the emulsion percentage.
The support and guide flange of the band
are so worn out that they cannot ensure
the alignment of the blade, causing faulty
cutting; blade rolling and drawing tracks
can have become tapered. Replace them.
Clean with compressed air.
Decrease advance, exerting less cutting
pressure. Adjust the braking device.
Use a superior quality blade.
Replace it.
Blade used probably has too large teeth;
use one with more teeth (see “Materialclassification and blade selection” in
the
Blade Types
Approach it as near as possible to material to be cut so that only the blade section employed in the cut is free, this will
prevent deflections that would excessively
stress the blade.
section).
NOISE ON GUIDE BLOCKS
28
Insufficient lubricating refrigerant or
wrong emulsion
Chipped bearings
Worn out or damaged pads
Check level of liquid in the tank. Increase
the flow of lubricating refrigerant, checking that the hole and the liquid outlet pipe
are not blocked.
Check the emulsion percentage.
Dirt and/or chips between blade and guide
bearings. Replace them.
Replace them.
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12.2 - Electrical components diagnosis
FAULTPROBABLE CAUSEREMEDY
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MACHINE DOES NOT WORK
Power supply
Fuses “FU 1”
"SQ 1" safety microswitch
Speed switch “SA” in position “0”
Emergency button “SB 1” on
Cycle reset or line button “SB 2”
Thermal probe built into the stator
winding has tripped due to motor overheating
Transformer “TC 1”
Fuse “FU 2 - FU 3”
Check:- phases
- cables
- socket
- plug
Voltage must arrive upstream from the
fuses (terminal board).
Check electrical efficiency and check for
shorts that trigger such protections.
Check closing of the flywheel guard.
Check the efficiency of the device; replace
it if damaged.
It must be turned to position 1 or 2.
Ensure that it is off and that its contacts
are unbroken.
Check mechanical efficiency; replace if
damaged.
Check current continuity on the two wires
in the prone after letting the motor cool
for about 10-15 minutes. If after this time
there is no current continuity in the two
wires, the motor must be changed or rewound.
Check that the supply voltage is the same
as the line voltage and that it gives a value
of 24 V at output.
Check fuse efficiency and ensure there
are no short circuits causing the protection to trip.
MOTOR STOPPED WITH PILOT
LIGHT “HL” LIT
13
In accordance with point 1.7.4.f of the Machines Directive EEC 89/392
- The microphone was positioned close to the operator's head, at medium height.
- The saw during normal working condition, delivers the following acoustic pressure:
. On idle running : 65,7 dB (A).
. During cutting cycle sawing a UNI C40 steel bar diam. 50 : 64,4 dB (A).
- The maximum level of the WEIGHTED instantaneous acoustic pressure C was always less than 130 dB.
NOTE: with the machine operating, the noise level will vary according to the different materials being processed. The user must therefore assess the intensity and if necessary provide the operators with the necessary personal protection, as required by Law 277/
1991.
NOISE TESTS
Microswitch “SQ 2” in the handle
Remote-control switch “KM”
Motor “M 1”
Check operation and/or efficiency;
replace if broken
.
Check that phases are present at both
input and output; ensure that it is not
blocked, that it closes when fed, that it
does not cause short circuits; otherwise
change it.
Check that it is not burnt and that it turns
freely.
It may be rewound or changed.
29
PLATES AND LABELS
Non ostruire assolutamente il foro diNon ostruire assolutamente il foro di
Non ostruire assolutamente il foro di
Non ostruire assolutamente il foro diNon ostruire assolutamente il foro di
scarico liquido refrigerante in eccesso.scarico liquido refrigerante in eccesso.
scarico liquido refrigerante in eccesso.
scarico liquido refrigerante in eccesso.scarico liquido refrigerante in eccesso.
Do not obstruct the coolant liquidDo not obstruct the coolant liquid
Do not obstruct the coolant liquid
Do not obstruct the coolant liquidDo not obstruct the coolant liquid
exhaust port.exhaust port.
exhaust port.
exhaust port.exhaust port.
Il ne faut pas obstruer le trou de dégorge-Il ne faut pas obstruer le trou de dégorge-
Il ne faut pas obstruer le trou de dégorge-
Il ne faut pas obstruer le trou de dégorge-Il ne faut pas obstruer le trou de dégorgement du liquide réfrigérant.ment du liquide réfrigérant.
ment du liquide réfrigérant.
ment du liquide réfrigérant.ment du liquide réfrigérant.
Die Kühlflüssigkeitsabflussöffnung nichtDie Kühlflüssigkeitsabflussöffnung nicht
Die Kühlflüssigkeitsabflussöffnung nicht
Die Kühlflüssigkeitsabflussöffnung nichtDie Kühlflüssigkeitsabflussöffnung nicht
verstopfen.verstopfen.
verstopfen.
verstopfen.verstopfen.
No obstruir por ningún motivo el agujeroNo obstruir por ningún motivo el agujero
No obstruir por ningún motivo el agujero
No obstruir por ningún motivo el agujeroNo obstruir por ningún motivo el agujero
de descarga del líquido refrigerante en ex-de descarga del líquido refrigerante en ex-
de descarga del líquido refrigerante en ex-
de descarga del líquido refrigerante en ex-de descarga del líquido refrigerante en exceso.ceso.