Garrick BS712 User manual

METAL CUTTING BAND SAW
Model BS712
INSTRUCTION MANUAL
For your safety, read all instructions carefully.
** This product carries the following approvals. CE, GS, CSA, and CU-L
ISO-9001:2008 Certied

SAFETY RULES
“Warning! When using electric tools basic safety precaution should always be followed to reduce
the risk of fore, electric shock and personal injury, including the following.
Read all these instructions before attempting to operate this product and save these instructions.”
1. Keep work area clear
-Cluttered areas and benches invite injuries.
2. Consider work area environment
-Do not expose tools to rain.
-Do not use tools in damp or wet locations.
-Keep work area well lit.
-Do not use tools in the presence of flammable liquids or gases.
3. Guard against electric shock
-Avoid body contact with earthed or grounded surfaces.
-Make certain the machine is properly grounded.
4. Keep other persons away
-Do not let persons, especially children, not involved in the work touch the tool or the extension
cord and keep them away from the work area.
5. Store idle tools
-When not in use, tools should be stored in a dry locked-up place, out of reach of children.
6. Do not force the tool
-It will do the job better and safer at the rate for which it was intended.
7. Use the right tool
-Do not force small tools to do the job of a heavy-duty tool.
-Do not use tools for purposes not intended; for example do not use circular saws to cut tree
limbs or logs.
8. Dress property
-Do not wear loose clothing or jeweler; they can be caught in moving pans.
-Non-skid footwear is recommended when working outdoors.
-Wear protective hair covering to contain long hair.
9. Use protective equipment
-Use approved safety glasses/face shields while using this machine.
-Use face or dust mask if cutting operations create dust.
10. Connect dust extraction equipment
-If device are provided for the connection of dust extraction and collecting equipment, ensure
these are connected and properly used.
11. Do not abuse the cord
-Never yank the cord to disconnect it from the socket. Keep the cord away from heat, oil and
sharp edges.

12. Secure work
-Where possible use clamps or a vice to hold the work. It is safer than using your hand.
13. Do not overreach
-Keep proper footing and balance at all times.
14. Maintain tools with care
-Keep cutting tools sharp and clean for better and safer performance.
-Follow instructions for lubricating and changing accessories.
-Inspect tool cords periodically and replace if damaged.
-Keep handles dry, clean and free from oil and grease.
15. Disconnect tools
-When not in use, before servicing and when changing accessories such as blades, bits and
cutters, disconnect tools from the power supply.
16. Remove adjusting keys and wrenches
-Form the habit of checking to see that keys and adjusting wrenches are removed from the tool
before turning it on.
17. Avoid unintentional starting
-Ensure switch is in “off” position when plugging in.
18. Use outdoor extension leads
-When the tool is used outdoors, use only extension cords intended for outdoor use and so
marked.
19. Stay alert
-Watch what you are doing, use common sense and do not operate the tool when you are tired.
20. Check damaged pans
-Before further use of tool. It should be carefully checked to determine that it will operate
properly and perform its intended function.
-Check for alignment of moving parts, binding of moving parts, breakage of parts, mounting
and any other conditions that may affect its operation.
-A guard or other pan that is damaged should be properly repaired or replaced by an authorized
service center unless otherwise indicated in this instruction manual.
-Have defective switches replaced by an authorized service center.
-Do not use the tool if the switch does no turn it on and off.
21. Warning
-The use of any accessory or attachment other than one recommended in this instruction
manual may present a risk of personal injury.
22. Have your tool repaired by a qualified person
-This electric tool complies with the relevant safety rules. Repairs should only be carried out
by qualified persons using original spare parts, otherwise this may result in considerable
danger to the user.
23. Never stand on tool. Serious injury could occur if the tool is tipped or if the cutting tool is
accidentally contacted.
24. As to the power supply, the error of the voltage should be within +/- 10% V, the rate error
should be within +/- 1Hz.
25. Operating condition.

1) The temperature of the environment should range from 5°to 40°.
2) The relative humidity should be within 30%~95%.
3) The altitude should not be higher than 1000M.
4) In transiting and storing condition, the machine should be kept within the temperature between
-25°and 55°.
26. The power supply must be installed with undervoltage protecting facility.
27. The power supply must be installed with overvoltage protecting facility.
28. Guarding gloves, glasses and earplugs of PPE is needed when operating the saw.
29. The oil in use should be void of any poison and danger.
30. Before any maintenance the power plug has to be removed from the supply socket.
31. WARNING:Attach all protective parts before operating this saw.
★WARNING
1. Keep machine guards in place at all times when the machine is in use. If removed for
maintenance purposes, use extreme caution and replace the guards immediately.
2. Do not over reach. Maintain a balanced stance at all times so that you do not fall or lean against
blades or other moving parts.
3. Replace warning labels if they become obscured or removed.
4. Give your work undivided attention. Looking around, carrying on a conversation, and
“horse-play” are careless acts that can result in serious injury. Never leave tool running
unattended. Turn power off. Don’t leave tool until it comes to a complete stop.
5. Always keep hands and fingers away from the blade when the machine is running.
6. Never hold the material with the saw in the horizontal position. Always use the vise and clamp
it securely.
7. Read and understand warnings posted on the machine.
8. Keep the belt guard and wheel covers in place and in working order.
9. Always provide adequate support for long and heavy material.
10. In urgent circumstances, the oil jar should be closed immediately to keep away from accident.
11. Never clean the saw blade or band wheel of a band saw using a hand-held brush or scraper
whilst the saw blade is in motion.
12. Adjust and position the blade guide arm before starting the cut. Keep blade guide arm tight. A
loose blade guide arm will affect sawing accuracy. Make sure that blade tension and blade
tacking are properly adjusted. Recheck blade tension after initial cut with a new blade. To
prolong blade life always release blade tension at the end of each workday. Make sure blade
speed is set correctly for material being cut.
13. Check coolant daily: low coolant level can cause foaming and high blade temperatures. Dirty
or weak coolant can clog pump, cause crooked crust, low cutting rate and permanent blade
failure. Dirty coolant can cause the growth of bacteria with ensuing skin irritation.
14. When cutting magnesium never use soluble oils or emulsions (oil-water mix) as water will
greatly intensify any accidental magnesium chip fire. See your industrial coolant supplier for
specific coolant recommendations when cutting magnesium.
15. Stop the machine before removing workpieces.

16. Make all adjustments with the power off. Before any maintenance the power plug has to be
removed form the supply socket.
17. Disconnect machine from power source when making repairs.
Shut off power and clean the blade saw and work area before leaving the machine. Clear away
the waste residue so as to avoid accidental injury after working.
18. This machine is only used for horizontal metal cutting, not vertical woodworking cutting.
About the safety of optional accessories
There are two optional safety accessories. Please read in detail from this clause about the safety
use of these devices as following.
1. Optional positive mode interlock for pulley cover. If the cutting speed need to be changed
very often, you must choose this option.
2. Optional handle operated power disconnection device. If your machine is equipped with this
option, please disconnect power through this device for some situation. Otherwise, disconnect
power according to the instruction in the clause of operation.
Environment Requirements for Installation.
1. Be sure to provide sufficient light for operation according to the codes or regulations
published for local area. If your do not get the information about lighting, a light intensity of
300 Lux is the least value to be supplied.
2. The place where machine install must be flat and big enough for the operation.
Noise Level
1. The noise level of this machine is about 75 db (A) during operation.
2. While taking provisions for the risk of noise, the noise level of working environment should
be taken into consideration also.
Handling & Transportation of Machine
1. The total weight of this machine must be ensured before handling.
2. This machine can not be handled without help of lifting tools.
Transportation Methods
1. Always keep balance of the machine in transportation. Watch the gravity!
2. Drive folklift slowly and carefully.

WIRING DIAGRAM
Grounding:
The grounding of this model is carried out by connecting the yellow/green terminal of supply
cable to the grounding terminal of power source. Be sure to ground your machine before
connecting machine to power source in any situation.
WARNING!
Do not disconnect grounding terminal before disconnecting power source.

Specifications
Cutting Capacity: 7”Round 7” ×
12”Rectangle
Blade speeds: 34-41-59-98MPM50Hz
41-49-69-120MPM60Hz
Blade size: 3/4”×0.032×93”
Unpacking and clean-up
1. Finish uncrating the saw. Inspect it for
shipping damage. If any damage has
occurred, contact your distributor.
2. Unbolt the saw from the skid and place it
on a level surface.
3. Clean rust protected surfaces with
kerosene, diesel oil, or a mold solvent. Do
not use cellulose-based solvents such as
paint thinner or lacquer thinner. These
will damage painted surfaces.
Assembly
1. Place blocking under the ends of the saw
base to allow wheel installation. Caution:
Make sure saw is steady while
temporarily supported.
2. Slide wheel axles through holes in base.
3. Slide wheels onto axles and fasten with
pins. Bend pins to hold in place.
4. Slide material stop bar (1, Fig.2) into base,
then take out nut and washer to tighten the
bar (1). Slide material stop (2) onto bar
and tighten bolt (3).
5. Slide cylinder bar (1,Fig.3) into base and
tighten. Slide cylinder (3) onto bar and
tighten nut (4). Slide the screw (2) into the
cylinder and tighten.
6. Remove transportation strap and keep for
later use should the saw be moved any
distance.
Coolant Tank Preparation
★ WARNING: Disconnect bandsaw from
the power source before making any
repairs or adjustments! Failure to
comply may cause serious injury!
★
Use of a water-soluble coolant will increase
cutting efficiency and prolong blade life. Do
not use black cutting oil as a substitute.
Change cutting oil often and follow
manufacturers instructions as to its use and
precautions.
1. Disconnect machine from the power

source.
2. Remove coolant return hose from tank
cover.
3. Slide tank out of saw base and carefully
remove lid containing coolant pump.
4. Fill tank to approximately 80% of
capacity.
5. Place lid back onto tank and place tank
assembly back into base.
6. Replace return hose back into hole in tank
lid.
Hydraulic feed selector
operation
The hydraulic feed selector is used to control
the blade feed rate and to lock the arm in the
vertical position. To increase the federate, turn
knob (1,Fig.4) counter-clockwise. To decrease
the feed rate, turn knob (1) clockwise. To turn
off the flow of hydraulic fluid, turn lever as in
figure 4. to turn the hydraulic cylinder on,
raise lever (2) to position.
Prior to operation
1. Check to see blade tooth direction
matches diagram on saw body.
2. Check to see that blade is properly seated
on wheels after proper tension has been
applied.
3. Set blade guide roller bearings snug
against blade. See “adjusting blade guide
bearings” for more detail.
4. Check for slight clearance between back
up rollers and back of blade.
5. Position both blade guides as close to
work as possible.
6. Select proper speed and feed rate for
material being cut.
7. Material to be cut must be held securely
in vise.
8. Check to see that coolant level is
adequate.
9. Do not start cut on a sharp edge. File it off
first.
10. Keep machine lubricated. See
“lubrication” section.
Changing blade speed
1. Disconnect machine from the power
source.
2. Loose motor plate lock bolt (1, Fig.5).
3. Loose motor plate slide bolt (2) until belt
can be moved on the pulleys.
4. Move belt to the desired pulley
combination.
5. Tighten motor plate slide bolt (2) to
re-tension belt.
6. Tighten machine to the power source.

Adjusting Blade Guides
1. Disconnect machine from the power
source.
2. Loosen knob (1, Fig.6) and knob (2).
Slide blade guide assemblies as close as
possible to the material without
interfering with the cut.
3. Tighten knob (1) and knob (2) and
connect machine to the power source.
Vise Adjustment
★ WARNING: Do not make any
adjustments or load/unload material from
vise while machine is running! Failure to
comply may cause serious injury!
To set the vise for 0 to 45 degree cutting:
1. Remove bolt and nut assemblies (C,
Fig.7).
2. Position vise and re-install as pictured in
Fig.8. Pay particular attention to bolt hole
location.
3. Set vise to desired angle, re-install nuts
and bolts, and tighten nut and bolt
assemblies.
4. Adjust movable vise parallel to fixed vise
by loosening bolt (A, Fig.8), adjusting to
parallel, and tightening bolt.
To set vise for maximum width of stock
cutting:
1. Remove nut and bolt assemblies.
2. Position vise and re-install bolt assemblies
as pictured in Fig.7.
Adjusting Blade Tension
★ WARNING: Disconnect machine from
the power source! Blades are sharp! Use
extra care when removing, installing or
adjusting! Failure to comply may cause
serious injury!
Blade tension is important to the proper
operation of the saw. Proper blade tension is
700 to 900 kgs lbs. per square inch as
measured on a blade tension gauge.
To set the blade tension without the use of a
blade tension gauge:
1. Install blade between wheel and insert
blade between bearings on blade guides.
2. Tension blade slightly to remove any sag
in blade between blade wheels.
3. Turn blade tension knob (A, Fig.9) one

and three quarter to two revolutions
clockwise. This equals approximately 800
kgs. of blade tension.
CAUTION: Do not over tighten blade. This
may cause blade to stretch and warp.
4. After blade has been completely installed,
close covers, connect to the power source,
and run saw for two to three minutes so
blade can seat properly.
5. Disconnect machine from the power
source. Open cover and loosen blade just
until it being to sag.
6. Tighten blade until it becomes straight
between blade wheel and all sag has been
eliminated.
7. Tighten blade by turning blade tension
wheel two full revolutions. Blade is now
properly tensioned and ready for use.
8. Close covers and connect machine to the
power source.
Changing Blades
★WARNING: Never operate this saw
unless all blade guards are installed and in
proper working order! Never adjust blade
brush while machine is running! Failure
to comply may cause serious injury!
★CAUTION: This machine is designed and
intended for use with blades that are
19mm wide by 0.9mm thick by 2360mm
long. Use of blades with different
specifications may cause inferior
performance.
1. Disconnect machine from the power
source.
2. Raise saw arm to vertical position and
lock in place by turning hydraulic
cylinder off.
3. Remove red blade guard assembly (A,
Fig.10) by removing two screws (B).
★WARNING：It is essential this guard be
installed after the new blade has been
fitted! Failure to comply may cause
serious injury!
4. Remove brush assembly (C) by removing
two screws (D).
5. Loose blade tension by turning blade
tension knob counter-clockwise.
6. Carefully remove old blade. Caution:
blade teeth are sharp. Handle with
care.
7. Install new blade by placing blade
between blade guides first. Make sure
blade teeth face the same direction as
indicated on the label found on the saw
arm.
8. Place blade around both wheels. Make
sure the blade edge rests near the wheel
flange on both wheels.
9. Turn blade tension knob clockwise to
tension blade. Do not over tension. Se
section titled “Adjusting Blade Tension”.
10. Close blade cover door and secure with
lock knobs.
11. Attach red blade guard and brush
assembly.
12. Connect machine to the power source.
13. Rum saw and make sure blade is tracking
properly.
Adjusting Blade Square to Table
1. Disconnect machine from the power
source.

2. Place machinist’s square on table next
blade as pictured in Fig.11.
3. Check to see blade makes contact with
square along the entire width of the blade.
4. If adjustment is necessary, loose bolts (A,
Fig.11) and rotate blade guide assemblies
slightly in the same direction until blade
makes contact with the square along it’s
entire width.
5. Tighten bolts (A).
6. Connect machine to the power source.
Note: If adjustment to square blade to table is
necessary, be sure to check blade adjustments
again.
Adjusting Blade Square to Vise
1. Disconnect machine from the power
source.
2. Place a machinist’s square as pictured in
figure 12 square should lie along entire
length of vise and blade without a gap.
3. If adjustment is necessary, loosen bolts
holding vice and adjust vise so that square
lines up properly. Tighten bolts.
4. Connect machine to the power source.
Adjusting Blade Tracking
★ WARNING：Blade tracking adjustment
requires running the saw with the back
cover open. This adjustment must be
completed by qualified persons only!
Failure to comply may cause serious
injury!
Note: Before making any tracking
adjustments, try a new blade. Warped blades
will not track.
Blade tracking has been set at the factory and
should not require adjustment. If a tracking
problem occurs, adjust the machine as
follows:
1. Move saw arm to the vertical position and
lack in place by shutting off the hydraulic
cylinder valve.
2. Confirm that blade tension is set properly.
To adjust, see section titled “Adjusting
Blade Tension”.
3. Open back cover by loosening lock
screws.
4. Run saw and observe blade. Blade should
run next to but not tightly against wheel
flange.
5. Loosen bolts (A, Fig.13).
6. Turn set screw (B) while observing blade
tracking on wheel. Turn set screw
clockwise to track blade closer to the
wheel flange. Turn set screw
counter-clockwise to track blade away
from the wheel flange.

7. Once tracking is set, tighten bolts (A).
Adjusting Blade Guide Bearings
CAUTION: This machine is designed and
intended for use with blades that are 19mm
wide by 0.9mm thick by 2360mm long. Use
of blades with different specifications may
cause inferior Performance.
1. Disconnect machine from the power
source.
2. Raise arm to vertical position and lock in
place by turning off the hydraulic cylinder
valve.
3. Loosen hex cap screw (A, Fig.14) and
adjust assembly so that back roller
bearing is approximately
0.08mm~0.12mm from the back of the
blade.
4. Turn nut (B) to adjust eccentric bearing
snug to the blade. Blade should still move
up and down freely when grasped as in
Fig.15.

WARNING: Make sure power is
disconnected and hands are protected
before handing blade. Be sure that blade
teeth do not interfere with the roller
bearings.
5. Repeat for other blade guide assembly.
6. Connect machine to the power source.
Adjusting Bow Weight
Bow weight is one of the most important
adjustments of the saw. If the bow weight is
not set properly, one can expect poor
performance, crooked cuts, tooth stripping,
stalling, and the blade popping off the blade
wheels. The hydraulic feed rate unit will not
compensate for improper bow weight. Bow
weight has been set at the factory and should
not need adjustment. If adjustment is
necessary:
1. Disconnect machine from the power
source.
2. Turn hydraulic cylinder valve on and
place saw arm in horizontal position.
3. Turn feed rate valve on hydraulic cylinder
counter-clockwise until it stops.
4. Place a fish-type scale under blade tension
handle and lift the saw arm. Scale should
indicate approximately 5-6 KG.
5. Adjust tension to approximately 5-6 KGS.
By turning bolt (A, Fig.16).
6. Connect machine to the power source.
Lubrication
Ball bearings on the blade guide assemblies
and the blade wheels are permanently sealed
and require no lubrication.
Lightly lubricate vise screw with #2 tube
grease. Change gear box oil after the first 90
days of operation. There after, change every
six months.
To change gear box oil:
1. Disconnect machine from the power
source.
2. Place saw arm in the horizontal position.
3. Remove screw (A, Fig.17) from the
gearbox and remove cover plate and
gasket.
4. Draw off the oil from gearbox.
5. Place the saw arm in the horizontal
position again. Wipe out remaining oil
with a rag.
6. Fill gearbox with approximately 0.3 liter
of 90 weight gear oil.
7. Replace gasket and cover. Fasten cover
with screws.
8. Connect machine to the power source.
Maintenance
WARNING: Disconnect machine from the
power source before making any repair or
adjustment! Failure to comply may cause
serious injury!
1. Keep all surfaces clean and free and free
of rust, slag, chips, and coolant build-up.
2. Do not use compressed air to clean
bandsaw. Compressed air may force chips
into the guide bearings and other critical
areas of the saw.
3. Use a small paintbrush or parts cleaning
brush to remove metal particles.
4. Wipe saw down with a clean, dry cloth
and oil all unpainted surfaces with light

machine oil.
5. Keep blade guides clean and free of metal
chips.
6. Check guide bearings frequently to make
sure they are properly adjusted and
turning freely.
Chip cleaning brush
WARNING! Do not attempt to adjust blade
brush with the machine running! Adjust only
when the machine’s power cord has been
removed from the power source!
Failure to comply may cause serious injury!
It is important that the blade cleaning brush be
properly adjusted and kept in good working
order. Replace the brush if it becomes
damaged or worn out. Blade life will be
shortened severely if the brush is allowed to
go out of adjustment, becomes damaged, or is
worn out.
ROUBLE SHOOTING CHART
SYMPTOM POSSIBLE CAUSE (S) CORRECTIVE ACTION
Excessive blade
breakage
1. Incorrect blade tension
2. incorrect speed or feed
3. Material loose in vise
4. Blade rubs on wheel flange
5. Teeth too coarse for
material
6. Teeth in contact with work
before saw is stared
7. Misaligned guides
8. Blade too thick for wheel
diameter
9. Cracking at weld
1. Adjust to where blade just does not slip
on where
2. Check machinist handbook
3. Clamp work securely
4. Adjust wheel alignment
5. Check machinist handbook for
recommended blade type
6. Place blade in contact work after motor
is started
7. Adjust
8. Use thinner blade
9. Make longer annealing cycle
Premature blade
dulling
1. Teeth too coarse
2. Too much speed
3. Inadequate feed pressure
4. Hard spots or scale in/on
material
5. Work hardening of
material (especially
stainless steel)
6. Blade installed backwards
7. Insufficient blade tension
1. Use finer tooth blade
2. Try next lower speed
3. Decrease spring tension on side of saw.
4. Reduce speed increase feed pressure
(scale) increase feed pressure (hard
spots)
5. Increase feed pressure by reducing
spring tension
6. Remove blade twist inside out and
reinstall blade
7. Increase tension to proper level
Bad cuts
(crooked)
1. Work not square
2. Feed pressure too great
3. Guide bearing not adjusted
properly
4. Inadequate blade tension
5. Blade guides spaced out
too much
1. Adjust vise to be square with blade
always clamp work tightly in vise
2. Reduce pressure by increasing spring
tension on side of saw
3. Adjust guide bearings to 001 greater
than max, thickness, including weld of
the saw

6. Dull blade
7. Speed incorrect
8. Blade guide bearing
assembly loose
9. Blade guide bearing
assembly loose
10. Blade tracks too far away
from wheel flanges
4. Increase blade tension a little at a time
5. Move guides as close to work as
possible
6. Replace blade
7. Check manual for recommended
speeds
8. Tighten
9. Tighten
10. Retrace blade according to operating
instructions
Bade cuts (rough) 1. Too much speed or feed
2. Blade is too coarse
1. Reduce speed and feed
2. Replace with finer blade
Unusual wear on
side/back of
blade
1. Blade guides worn
2. Blade guide bearings not
adjusted properly
3. Blade guide bearing
bracket is loose
1. Replace
2. Adjust as per operators manual
3. Tighten
Feeth ripping
form blade
1. Tooth too coarse for work
2. Too heavy feed; too slow
feed
3. Vibrating work piece
4. Gullets loading
1. Use finer tooth blade
2. Increase feed pressure and/or speed
3. Clamp work securely
4. Use coarse tooth blade or brush to
remove workpieces
Motor running
too hot
1. Blade tension too high
2. Drive belt tension too high
3. Blade is too coarse for
work (pipes especial)
4. Blade is too fine for work
(heavier, soft material)
5. Gear not aligned properly
6. Gears need lubrication
7. Idler wheel needs
lubrication
1. Reduce tension on blade
2. Reduce tension on drive belt
3. Use finer blade
4. Use coarser blade
5. Adjust gears so that worm is in center
or gear
6. Check oil bath
7. Oil bearing/shaft on idler wheel

NOTES

Distributed by:
Garrick Herbert Pty Ltd
KIRRAWEE NSW
Australia.
www.garrickherbert.com.au