JPW Promac SX-823DGVI User manual

Metallbandsäge
Scie à ruban
SX-823DGVI
SX-827DGVI
Metal Band Saw
06-2017
Schweiz / Suisse
JPW (TOOL) AG
Tämperlistrasse 5
CH-8117 Fällanden Switzerland
www.promac.ch
France
TOOL France / PROMAC
57, rue du Bois Chaland, Z.I. du Bois Chaland
case postale 2935 FR-91029 Evry Cedex
www.promac.fr

CE-Conformity Declaration
CE-Konformitätserklärung
Déclaration de Conformité CE
Product / Produkt / Produit:
Metal Band Saw
Metallbandsäge
Scie à ruban
SX-823DGVI / SX-827DGVI
Brand / Marke / Marque:
PROMAC
Manufacturer / Hersteller / Fabricant:
JPW (Tool) AG, Tämperlistrasse 5, CH-8117 Fällanden
Schweiz / Suisse / Switzerland
We hereby declare that this product complies with the regulations
Wir erklären hiermit, dass dieses Produkt der folgenden Richtlinie entspricht
Par la présente, nous déclarons que ce produit correspond aux directives suivantes
2006/42/EC
Machinery Directive
Maschinenrichtlinie
Directive Machines
2014/30/EU
electromagnetic compatibility
elektromagnetische Verträglichkeit
compatibilité électromagnétique
designed in consideration of the standards
und entsprechend folgender zusätzlicher Normen entwickelt wurde
et été développé dans le respect des normes complémentaires suivantes
EN ISO 12100:2010
EN 13898:2003+A1:2009
EN 60204-1:2006+A1:2009
EN 61000-6-2:2005
EN 61000-6-4:2007+A1:2011
Responsible for the Documentation / Dokumentations-Verantwortung / Résponsabilité de Documentation:
Hansjörg Meier
Head Product-Mgmt. / Leiter Produkt-Mgmt. / Resp. Gestion des Produits
JPW (Tool) AG
2016-05-24 Alain Schmid, General Manager
JPW (Tool) AG, Tämperlistrasse 5, CH-8117 Fällanden
Schweiz / Suisse / Switzerland

GB - ENGLISH
Operating Instructions
Dear Customer,
Many thanks for the confidence you have shown in us with the purchase of your new machine. This manual has been prepared
for the owner and operators of a SX-823DGVI / SX-827DGVI metal band saw to promote safety during installation, operation
and maintenance procedures. Please read and understand the information contained in these operating instructions and the
accompanying documents. To obtain maximum life and efficiency from your machine, and to use the machine safely, read this
manual thoroughly and follow instructions carefully.
…Table of Contents
1. Declaration of conformity
2. Warranty
3. Safety
4. Machine dimensions, Transport, Installation and
Dismantling
5. Functional parts of the machine
6. Advice on using your bandsaw
7. Adjusting your machine
8. Routine and spezial maintenance
9. Technical characteristics
10. Material classification and choice of tools
11. Environmental protection
12. Available accessories
13. Troubleshooting
1. Declaration of conformity
On our own responsibility we hereby declare that this
product complies with the regulations* listed on page 2.
Designed in consideration with the standards**.
2. Warranty
The Seller guarantees that the supplied product is free
from material defects and manufacturing faults. This
warranty does not cover any defects which are caused,
either directly or indirectly, by incorrect use, carelessness,
accidental damage, repair, inadequate maintenance or
cleaning and normal wear and tear.
Guarantee and/or warranty claims must be made within
twelve months from the date of purchase (date of invoice).
Any further claims shall be excluded.
This warranty includes all guarantee obligations of the
Seller and replaces all previous declarations and
agreements concerning warranties.
The warranty period is valid for eight hours of daily use. If
this is exceeded, the warranty period shall be reduced in
proportion to the excess use, but to no less than three
months.
Returning rejected goods requires the prior express consent
of the Seller and is at the Buyer’s risk and expense.
Further warranty details can be found in the General Terms
and Conditions (GTC). The GTC can be viewed at
www.jettools.com or can be sent by post upon request.
The Seller reserves the right to make changes to the product
and accessories at any time.
3. Safety
3.1 Authorized use
This machine is designed for sawing machinable metal and
plastic materials only.
Machining of other materials is not permitted and may be
carried out in specific cases only after consulting with the
manufacturer.
Never cut magnesium-high danger to fire!
The workpiece must allow to safely be loaded and clamped
for machining.
The proper use also includes compliance with the operating
and maintenance instructions given in this manual.
The machine must be operated only by persons familiar with
its operation and maintenance and who are familiar with its
hazards.
The required minimum age must be observed
The machine must only be used in a technically perfect
condition.
When working on the machine, all safety mechanisms and
covers must be mounted.
In addition to the safety requirements contained in these
operating instructions and your country’s applicable
regulations, you should observe the generally recognized
technical rules concerning the operation of metalworking
machines.
1

Any other use exceeds authorization.
In the event of unauthorized use of the machine, the
manufacturer renounces all liability and the responsibility
is transferred exclusively to the operator.
3.2 General safety notes
Metalworking machines can be dangerous if not used
properly. Therefore the appropriate general technical
rules as well as the following notes must be observed.
Read and understand the entire instruction manual before
attempting assembly or operation.
Keep this operating instruction close by the machine,
protected from dirt and humidity, and pass it over to the
new owner if you part with the tool.
No changes to the machine may be made.
Daily inspect the function and existence of the safety
appliances before you start the machine.
Do not attempt operation in this case, protect the
machine by unplugging the mains cord.
Remove all loose clothing and confine long hair.
Before operating the machine, remove tie, rings, watches,
other jewellery, and roll up sleeves above the elbows.
Wear safety shoes; never wear leisure shoes or sandals.
Always wear the approved working outfit
Do not wear gloves while operating this machine.
For the safe handling of saw blades wear work gloves.
Wear goggles when working
Install the machine so that there is sufficient space for
safe operation and workpiece handling.
Keep work area well lighted.
The machine is designed to operate in closed rooms and
must be placed stable on firm and levelled ground.
Make sure that the power cord does not impede work and
cause people to trip.
Keep the floor around the machine clean and free of
scrap material, oil and grease.
Never reach into the machine while it is operating or
running down.
Stay alert!
Give your work undivided attention. Use common sense.
Keep an ergonomic body position.
Maintain a balanced stance at all times.
Do not operate the machine when you are tired.
Do not operate the machine under the influence of drugs,
alcohol or any medication. Be aware that medication can
change your behaviour.
Keep children and visitors a safe distance from the work
area.
Never leave a running machine unattended.
Before you leave the workplace switch off the machine.
Do not operate the electric tool near inflammable liquids or
gases.
Observe the fire fighting and fire alert options, for example
the fire extinguisher operation and place.
Do not use the machine in a dump environment and do not
expose it to rain.
Insure that the workpiece does not roll when cutting round
pieces.
Use suitable table extensions and supporting aids for difficult
to handle workpieces.
Always adjust the blade guide close to the workpiece.
Remove cut and jammed workpieces only when motor is
turned off and the machine is at a complete standstill.
Work only with well sharpened tools.
Bearbeiten Sie nur ein Werkstück, das sicher auf dem Tisch
aufliegt.
Specifications regarding the maximum or minimum size of
the workpiece must be observed.
Do not stand on the machine.
Never operate with the guards not in place – serious risk of
injury!
Connection and repair work on the electrical installation may
be carried out by a qualified electrician only.
Have a damaged or worn cord replaced immediately.
Make all machine adjustments or maintenance with the
machine unplugged from the power source.
Remove defective saw blades immediately
3.3 Remaining hazards
When using the machine according to regulations some
remaining hazards may still exist
The moving saw blade in the work area can cause injury.
Broken saw blades can cause injuries.
Thrown cutting chips and noise can be health hazards.
Be sure to wear personal protection gear such as safety
goggles and ear protection.
The use of incorrect mains supply or a damaged power cord
can lead to injuries caused by electricity.
2

4. Machine dimensions, Transport, Installation and
Dismantling
4.1 Machine dimensions
SX-823DGVI
SX-827DGVI
4.2 Assembling the Saw and the Base
- Join panels A, B, and C by inserting tenon into mortise as
shown in circle diagram 1 and 2.
- Fasten bottom panel D into the joined panels A, B, and C
using setscrews that are provided
- Attach panel F to panel C with provided setscrews.
- Attach control box with two provided setscrews.
- Mount the saw unit on the base as shown in drawing 5.
- Fasten the saw unit to the base with provided set screws.
3

If the machine needs to be moved in its own packing, use
a forklift truck or sling it with straps as illustrated in
drawing above.
4.3 Minimum requirements for housing the machine
- Main voltage and frequency must comply with the
machine’s motor requirements.
- Environment temperature should fall within –10 ºC to
+50 ºC.
- Relative humidity cannot be over 90%.
4.4 Anchoring the machine
Position the machine on a firm cement floor, maintaining,
at the rear, a minimum distance of 800 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 assembly of the loose parts and
accessories
Fit the components supplied:
Detail 1 Mount bar-stop rod
Detail 2 Mount and align the roll-supporting arm as per the
counter-vise table.
4.6 Deactivation of machine
- If the sawing machine is to be out of use for 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 return spring
4) Empty the coolant tank
5) Carefully clean and grease the machine
6) If necessary, cover the machine.
4.7 Dismantling (due to 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 metal
alone, are 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 assimilated to urban waste
according to the laws of your local, state, or federal
government, 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 considered hazardous or special refuse, so
they must be collected, transported and disposed of at a
special waste disposal service.
NOTE: The standards and legislation concerning refuse is in
a constant state of evolution, therefore is subject to changes.
The user must keep informed of the regulations at the time of
disposal as these may differ from those described above.
5 The machine´s functional parts
5.1 The saw arm
Machine parts consisting of drive members (gear motor or
variable speed motor, flywheels), tightening and guide (blade
tightening slide, blade guide blocks) of tool.
4

SX-823DGVI
SX-827DGVI
5.2 Controls
A. Hydraulic Flow control valve
B. Hydraulic regulation valve
C Trigger Switch
D Blade Tension gauge
C1 Manual position
C2 Auto position
C. Fork handle
S. Spring knob
5

SX-823DGVI / SX-827DGVI
A. Main connect switch
B. Manual/Auto selector
C. Indicator light
D. Auto start cutting button
E. Emergency push button
F. Blade Speed adjusting knob
G. Blade Speed display
5.3 Vise adjustment
- The device does not require any particular adjustment;
in case of excess play of the sliding guide, tighten slide
screw more.
To move the vise in either direction, the vise jaw must be
unlocked at two points.
- Release the track support by turning handle (1) counter-
clockwise.
- Release the vise by moving the lever (2) to the left.
- The vise (5) may now be moved to right position (7) or left
position (6) by pushing it with one hand on the vise and the
other hand on the track handle (1).
- Once in position, move the lever (2) to the right to lock it
into position.
- Lock the track support (1) by turning handle clockwise.
Clamping the Work Piece
- Place work piece between the jaws.
- Use the hand wheel to approach the vise jaws to the work
piece, make the vise jaw to against the material. Lock the
work piece by push down the lever (4).
Push start cutting button (D). When the cutting cycle is
finished, release vise by pulling lever (4) up. Upon releasing
the lever (4), the vise jaw will open. This allows for rapid
loading of same size material.
5.4 Cutting angle adjustment
Cutting at angles
- Using the right side, angles can be cut up to 60 degrees.
This requires that vise jaw to be set on the left side (6).
- Using the left side, angles can be cut up to 45 degrees.
This requires the vise jaw to be set on the right side (7).
- Unlock lever (3) and rotate the saw frame arm until you
reach mechanical stop and check if the index corresponds to
45 degrees; if not, operate on the set screws to make
measures meet.
5.5 The base
- A structure supporting the SAW ARM (revolving arm for
gradual cutting and respective blocking system), the VISE,
the BAR STOP, the ROLLER for the support of the material.
The base houses the cooling liquid TANK and PUMP.
6

SX-823 DGVI
SX-827DGVI
5.6 Saw frame moving down flow control
The hydraulic cylinder is 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 flow control valve (A), this device can be
accommodated to the different situations and applications. (B)
level is on/off switch to control hydraulic flow.
5.7 The operation cycle
Before operating, all the main organs of the machine must be
set in optimum conditions.
C1 Manual position
7

C2 Auto position
Operation Procedure:
A. Trigger switch operation by manual
- Raise the saw arm.
- Close the hydraulic flow control valve on the cylinder (B)
(5.6) by turning the valve clockwise all the way to the end.
- Lift the spring knob (S) to release the pin from its slot.
This will free the fork handle (C). Move the handle to the
manual position (C1). Lift the spring knob (S) and secure
its pin into its slot.
- Use manual/auto selector (B) to select handle icon.
- Preset cutting speed by turning speed selector knob (F).
- Turn main connect switch (A) to the ON position. Check
that the indicator light (C) is on.
- Load work piece and clamp it properly.
- Fully open the hydraulic flow regulation valve (B) (5.6)
by turning the valve counter-clockwise all the way to the
end and also fully open the flow control knob (A) by turn it
counter-clockwise.
- Press trigger switch (C) to start operation.
- Reset blade speed.
- If cutting pipe with thin walls, reduce the saw arm descent
rate by adjusting the flow control valve (A).
- Press the emergency push button (E) down to shut off all
functions. To release the emergency push button rotate the
mushroom shaped button (E) clock-wise. The button will
pop up and then the cutting cycle can be restarted.
- In general, start cuts by slightly turning hydraulic flow
control valve (A) counter-clockwise from 2 to 3 to control the
saw arm descent rate. If the arm descends too quickly, turn
the hydraulic flow regulation valve (B) clockwise all the way
back to stop its descent. A saw arm dropping too quickly
can cause the blade to stall on the work piece and the
machine will shut off. Push down on emergency push
buttons (E) on the panel and (K) SX-823DG on the base to
immediately stop all machine functions.
B. Auto cutting operation
- Raise the saw arm.
- Close the hydraulic flow control valve (A) by turning the
valve clockwise all the way to the end.
- Lift the spring knob (S) to release the pin from its slot.
This will free the fork handle (C). Move the handle to the
auto position (C2). Lift the spring knob (S) and secure its
pin into its slot.
- Use manual/auto selector (B) to select auto.
- Select cutting speed by turning speed selector (F).
- Turn main connect switch (A) to the ON position.
Check that the indicator light (C) is on.
- Load work piece and clamp it properly.
- Press start button (D) to start machine. Check that the
blade is running in the correct direction.
- Slightly pull the saw arm down to get rid of air bubbles from
the hydraulic cylinder.
- Adjust hydraulic flow control valve (A) by slightly turning
the valve counter-clockwise to let saw arm descend and start
cutting.
- Press the emergency push button (E) down to shut off all
functions. To release the emergency shut off rotate
emergency push button (E) clock-wise. The button will pop
up and then the cutting cycle can be restarted.
- In general, start cuts by slightly turning hydraulic flow
control valve (A) counter-clockwise from 2 to 3 to control the
saw arm descent rate. If the arm descends too quickly, turn
hydraulic flow regulation valve (B)(5.6) clockwise all the way
back to stop its descent. A saw arm dropping too quickly
can cause the blade to stall on the work piece and the
machine will shut off. Push down on emergency push
button (E) to immediately stop all machine functions.
8

Blade cutting direction
6. Advice on using your bandsaw
6.1 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.
Only one operator is needed to use the machine, that
must stand as shown in the picture.
- Before starting each cutting operation ensure that the
part is firmly clamped in the vise and that the end is
suitably supported.
- These figures below 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 vise slowly,
remove the part and check that the blade or its teeth are not
broken. If they are broken, change the tool.
- Before carrying out any repairs on the machine, consult the
dealer.
7. Adjusting your machine
7.1 Blade tension assembly
The ideal tension of the blade is achieved rotating the hand
wheel until the needle reaches the proper blade tension on
the tension gauge (A).
The machine will not operate if the micro switch does not
actuate by contacting the tension device (C).
If the tension is set properly, but the micro switch (B) does
not contact or trigger properly, make this adjustment.
If the tension is set properly, but the micro switch (B) does
not contact or trigger properly, make this adjustment.
If the tension is set properly, but the micro switch (B) does
not contact or trigger properly, make this adjustment.
- Loosen the setscrews (D).
9

- Push the micro switch (B) towards the tension device
(C). Make sure that the plunger is pressed properly.
- Tighten down the setscrews (D) to secure the micro
switch (B) in place.
7.2 Adjusting the blade guide
- Disconnect the machine from the power source.
- Use a Hex. Wrench to loosen Hex. Socket screw (A) on
the square lock plate.
- Hold the handle (B) and slide blade guide block as close
as possible to the material without interfering with the cut
- Tighten the Hex. Socket screw (A).
- Reconnect the machine to power source.
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.
In case the blade needs to be replaced, make sure to always
install 0.9mm thick blades for which the blade guide pads
have been adjusted. In the case of toothed blades with
different thickness 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).
- To mont the new blade: place the pad (A) on the blade,
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 necessary,
loosen the screws that fasten the blocks and adjust
accordingly.
BEFORE PERFORMING THE FOLLOWING OPERATIONS,
THE ELECTRIC POWER SUPPLY AND THE POWER
CABLE MUST BE COMPLETELY DISCONNECTED.
7.Changing the blade
To change the blade:
- Lift the saw arm.
- Loosen the blade with the hand wheel, 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.
10

- Tension the blade and make sure it perfectly fits inside
the seat of the flywheels.
- Assemble the mobile blade-guide end, the flywheel
guard, and fasten it with the relative knobs. Check that
the safety micro switch is activated otherwise when
electric connection will be restored the machine will not
start.
7.4 Adjusting the blade to the blade wheels
1. Loosen the hex nut screws A, B, and C.
2. Use an Allen wrench on setscrew D to adjust the tilt of
the blade wheel.
-Turning the setscrew D clockwise will tilt blade wheel so
that the blade will ride closer to the flange.
-Turning the setscrew D counter-clockwise with tilt the
blade wheels that the blade will ride away from the flange.
If the blade rides away too far then it will come off.
After the adjustment is finished, fasten the hex nut screws
in this order: A, B, and C.
A- A tilt in this direction will cause the blade to ride
towards the flange.
B- A tilt in this direction will cause the blade to ride away from
the flange.
D- Set screw
Checking the adjustment of the blade
E- Paper
F- Flywheel
G- Blade direction
Use a strip of scrap paper and slide it between the blade and
the blade wheel while it is running.
- If the paper is cut then the blade is riding too close to the
flange. Re-adjust.
- If you notice that the blade is riding away from the flange.
Then re-adjust
WARNING: Always assemble blades having dimensions
specified in this manual and for which the blade guide heads
have been set; otherwise, see chapter on "Description of the
operating cycle" in the section Starting-up.
8. Routine and special 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.
8.1 Daily maintenance
- General cleaning of the machine to remove accumulated
shavings.
- Clean the lubricating coolant drain hole to avoid excess
fluid.
- Top off 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.
11

8.2 Weekly maintenance
- Thorough 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.
- Use compressed air to clean the blade guides (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 blade wheel screws.
- Check that the blade guide bearings on the heads are
perfect running condition.
- Check the tightening of the screws of the gear motor,
pump, and accident protection guarding.
8.4 Six-monthly maintenance
- Continuity test of the equipment potential protection
circuit.
8.5 Maintenance of other machine parts
The worm drive gearbox mounted on the machine is
maintenance-free guaranteed by its manufacture.
8.6 Öle für das schmierfähige Kühlmittel
Verwenden Sie das biologisch abbaubare
Kühlschmiermittel Art.: 9176. DER MINIMALE
PROZENTSATZ VON ÖL IN WASSER GELÖST
SOLLTE 8 - 10 % BETRAGEN.
8.7 Oils for lubricating coolant
Considering the vast range of products on the market, the
user can choose the one most suited to their own
requirements, using as reference the type SHELL LUTEM
OIL ECO. THE MINIMUM PERCENTAGE OF OIL
DILUTED IN WATER IS 8 - 10 %.
8.8 The gear box
The gearbox requires periodic changing of oil. The oil must
be changed by the first 6 months of a new machine and
every year thereafter.
To change the gear box oil
- Disconnect the machine from the power source.
- Raise the saw arm to vertical position
- Release the drain hole (O) to draw off gear oil by loosening
the hex socket screw (O).
- Replace the screw (O) after oil completely flows off.
- Place the saw arm back to horizontal position.
- Fill Gear box with approximately .3 liter of gear oil through
the hole of the vent screw (Q)
For reference, use SHELL type gear oil or Mobile gear oil
#90.
8.9 Special maintenance
Special maintenance must be conducted by skilled personnel.
We advise contacting your nearest dealer and/or importer.
Also the reset of protective and safety equipment and
devices (of the reducer), the motor, the motor pump, and
other electrical components requires special maintenance.
12

9. Technical characteristics
9.1 Table of cutting capacity and technical details
SX-823DGVI
Cutting capacity
Electric motor-blade rotation 1.1kW
Flywheel diameter 295mm
Blade dimensions 27x0,9x2460mm
Blade speed cutting 20~85 m/min
Opening vice 260mm
Saw frame tilting 40°
Working table height 900mm
Weight 280 kg
SX-827DGVI
Cutting capacity
Electric motor-blade rotation 1.5kW
Flywheel diameter 380mm
Blade dimensions 27x0,9x3160mm
Blade speed cutting 20~85 m/min
Opening vice 355mm
Saw frame tilting 40°
Working table height 900mm
Weight 360 kg
9.2 Noise emission
Acoustic pressure level (EN 11202):
Idling Lpa 71,0 dB(A)
Operating Lpa 83,8 dB(A)
The specified values are emission levels and are not
necessarily to be seen as safe operating levels.
As workplace conditions vary, this information is intended to
allow the user to make a better estimation of the hazards and
risks involved only.
10. Choosing the saw band
Choose a toothing that is appropriate to the workpiece being
processed. Ideally, at least 3 teeth should be in action at the
same time.
The toothing should not be smaller than necessary, as the
cutting speed is reduced if there are too many small teeth
working on the workpiece simultaneously, which causes the
saw band to wear more quickly, and makes the cuts crooked
and distorts them.
The following table shows the approximate toothing of the
saw bands for a specific material thickness. For further
information please contact your saw band dealer.
Comments
10/14 toothing provides good cutting results for thin-walled
pipes and profiles.
13

The choice of toothing (i.e. the number of teeth per inch)
should be such that at least 3 teeth are always in action
at the same time.
When cutting thick material, a coarse Tooth Pitch “T” is
needed to accommodate the big chips.
Cutting speed selection
The general rule is the harder the material being cut, the
slower the blade speed.
20 m/min
for stainless steel, alloy steel and bearing bronzes.
30-50 m/min
for mild steel, hard brass or bronze.
60 - 85 m/min
for soft brass, aluminium or other light materials.
Saw band lubricant
The lifetime of the saw band can be extended
significantly by lubricating it with stick wax item no.
100103.
NOTE
Some materials, such as stainless steel or aluminium,
require specific oils.
Rounding of teeth
A carefully broken in blade lasts much longer and gives
better performance.
To break in your new blade, run it at only 30% of normal
pressure for ten minutes.
Then gradually increase to normal pressure.
Feed pressure selection:
A good indication of proper feed pressure is the shape of the
cutting chips.
Perfect:
Loose curled chips
If the chips are thin or powdered increase the feed pressure.
If the chips are burned reduce the cutting speed and
decrease the feed pressure.
10.1Blade structure
Bi-metal blades are the most commonly used. They consist
of a silicon-steel blade backing by a 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
(Cc) and molybdenum (Mo) contained in the metal alloy.
10.2Blade type
They differ essentially in their constructive characteristics
- Shape and cutting angle of tooth,- Pitch
REGULAR TOOTH: Oº 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 gray iron or general metal.
POSITIVE RAKE TOOTH: 9º - 10º positive rake and constant
pitch.
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 iron).
COMBO TOOTH: 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.
14

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 TOOTH: 9º - 10º positive rake.
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.
SETS
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.
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 1mm).
ALTERNATE SET (INDIVIDUAL TEETH): Cutting teeth right
and left.
This set is used for the cutting of nonferrous soft materials,
plastics and wood.
15

10.3 Materials and characteristics
TYPES OF STEEL CHARACTERISTICS
USE I
UNI
D
DIN
F
AF NOR
GB
SB
USA
AISI-
SAE
Hardne
ss
BRINEL
L HB
Hardness
ROCKWE
LL HB
R=N/mm
2
Constructi
on Steel
Fe360
Fe430
Fe510
St37
St44
St52
E24
E28
E36
----
43
50
----
----
----
116
148
180
67
80
88
360÷480
430÷560
510÷660
Carbon
Steel
C20
C40
C50
C60
CK20
CK40
CK50
CK60
XC20
XC42H1
----
XC55
060 A
20
060 A
40
----
060 A
62
1020
1040
1050
1060
198
198
202
202
93
93
94
94
540÷690
700÷840
760÷900
830÷980
Spring
Steel
50CrV4
60SiCr8
50CrV4
60SiCr7
50CV40
----
735 A
50
----
6150
9262
207
224
95
98
1140÷13
30
1220÷14
00
Alloyed
steels for
hardening
and
tempering
and for
nitriding
35CrMo4
39NiCrMo4
41CrAlMo7
34CrMo4
36CrNiMo4
41CrAlMo7
35CD4
39NCD4
40CADG
12
708 A
37
----
905 M
39
4135
9840
----
220
228
232
98
99
100
780÷930
880÷108
0
930÷113
0
Alloyed
caseharden
ing steels
18NiCrMo7
20NiCrMo2
----
21NiCrMo2
20NCD7
20NCD2
En 325
805 H
20
4320
4315
232
224
100
98
760÷103
0
690÷980
Alloyed
steel for
bearings
100Cr6 100Cr6 100C6 534 A
99 52100 207 95 690÷980
Tool steel
52NiCrMoK
U
C100KU
X210Cr13K
U
58CrMo171
3
56NiCrMoV7C1
00K
C100W1
X210Cr12
----
----
----
Z200C12
Y60SC7
----
BS 1
BD2-
BD3
----
----
S-1
D6-D3
S5
244
212
252
244
102
96
103
102
800÷103
0
710÷980
820÷106
0
800÷103
0
Stainless
steel
X12Cr13
X5CrNi1810
X8CrNi1910
X8CrNiMo1
713
4001
4301
----
4401
----
Z5CN18.
09
----
Z6CDN1
7.12
----
304 C
12
----
316 S
16
410
304
----
316
202
202
202
202
94
94
94
94
670÷885
590÷665
540÷685
490÷685
Copper
alloys ,
Special
brass,
Bronze
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
220
140
120
100
98
77
69
56.5
620÷685
375÷440
320÷410
265÷314
Cast iron
Gray pig iron G25
Spheroidal graphite cast iron GS600
Malleable cast iron W40-05
212
232
222
96
100
98
245
600
420
16

11. Environmental protection
Protect the environment.
Your appliance contains valuable materials which can be recovered or recycled. Please leave it at a specialized institution.
12. Available accessories
Refer to the pricelist for various saw blades.
17

13. Troubleshooting
This chapter lists the probable faults and malfunctions that could occur while the machine is being used and suggests possible
remedies for solving them.
13.1 Blade and cut diagnosis
FAULT PROBABLE CAUSE REMEDY
Tooth Breakage Too fast advance Decrease advance, exerting less cutting
pressure. Adjust the braking device.
Wrong cutting speed
Change speed and/or type of blade.
See chapter on "Material classification
and blade selection", in the section
Blade selection table according to
cutting and feed speed.
Wrong tooth pitch
Choose a suitable blade. See Chapter
"Material classification and blade
selection".
Chips sticking onto teeth and in
the gullets or material that gums
Check for clogging of coolant drain
holes on the blade-guide blocks and
that flow is plentiful in order to facilitate
the removal of chips from the blade.
Defects on the material or material
too hard
Material surfaces can be oxidized 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 a
situation a cut has to be made use
extreme care, cleaning and remove
any such impurities as quickly as
possible.
Ineffective gripping of the part in
the vise
Check the gripping of the part.
The blade gets stuck in the material
Reduce feed and exert less cutting
pressure.
Starting cut on sharp or irregular
section bars
Pay more attention when you start
cutting.
Poor quality blade
Use a superior quality blade
Previously broken tooth left in the
cut
Accurately remove all the parts left in.
Cutting resumed on a groove
made previously
Make the cut elsewhere, turning the part.
Vibrations Check gripping of the part.
18