MachineryHouse BS-912 User manual

INSTRUCTION MANUAL
BS-912
Metal Cutting Band Saw (240V)
305 x 178mm (W x H) Rectangle
B014
Page 1
Instruction Manual for BS-912 (B014)
03/12/2014

WARNING
!!
Some dust created by power sanding, sawing,
grinding,
drilling, and other construction activities
contains
chemicals known to the State of California to
c
a
u
secancer,birth defects or other reprodrctive harm.
Someexamples of these chemical are:
‧Lead from lead-based paints.
‧Crystalline silica from bricks, cement and other
masonry products.
‧Arsenic and chromium from chemically-treated
lumber.
Yourriskfrom these exposures varies, depending on
how often you do this type of work. To reduce your
exposure to these chemicals: Work in a well ventilated
area,andwordwith approved safety equipment, such
asthosedust masks that are specially designed to
filter out microscopic particles.
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Instruction Manual for BS-912 (B014)
03/12/2014

TableOfContents PageNo
1 Warning ….………………………………………………………………..…
2 Safety rules for all tools ..……………………………………………………
3 Specification ……………………………………………………………...…
4 Transportation of machine ……………………………………………….…
5 Installation ……………………………………………………………………..
6 Minimum Room Space For Machine Operation ……………………………
7 Make proper tooth selection ……………………………………………….…
8 BI-Metal speeds and feeds .………………………………………………….
9 Assembly ……………………………………………………………………..
10 Operation …………………………………………………………………...
11 Blade guide bearing adjustment …..………………………………………..
12 Blade track adjustment .…………………………………………………….
13 Maintenance …………………..……………………………………………….
14 Lubrication …………………………………………………………………….
15 Trouble Shooting ………………………………………………………………
16 Circuit Diagram ……………………….………………………………………
CAUTION
Install saw blade and blade guard
before use. Set proper blade tension
to prevent any danger caused by
damaged saw blade or work piece.
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7
8
8
10
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13
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17
19
20
21
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Instruction Manual for BS-912 (B014)
03/12/2014

Switch
Interlock switch
Guide adjustable knob Motor pulley cover
Blade adjustable knob
Hand vise wheel
Stop block
Cylinder
Vise jaw bracket
Gear box
Switch
Interlock switch
Guide adjustable knob
Blade adjustable handle
Cylinder
Hand vise wheel
Vise jaw bracket
Stop block
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Instruction Manual for BS-912 (B014)
03/12/2014

WARNING: FAILURE TO FOLLOW THESE RULES
MAY RESULT IN SERIOUS PERSONAL INJURY
As with all machinery there are certain hazards involved with operation and use of the machine.
Using the machine with respect and caution will considerably lessen the possibility of personal
injury. However, if normal safety precautions are overlooked or ignored, personal injury to the
operator may result.
This machine was designed for certain applications only. We strongly recommends that this
machine NOT be modified and/or used for any application other than for which it was designed. If
you have any questions relative to its application DO NOT use the machine until you contact with
us and we have advised you.
Always install the plastic belt cover before operating the machine.
Your machine might not come with a power socket or plug. Before using this machine, please
Do ask your local dealer to install the socket or plug on the power cable end.
SAFETY RULES FOR ALL TOOLS
A. USER:
(1). WEAR PROPER APPAREL. No loose clothing, gloves, rings, bracelets, or other jewelry to
get caught in moving parts.
Non-slip foot wear is recommended. Wear protective hair covering to contain long hair.
(2). ALWAYS WEAR EYE PROTECTION. Refer to ANSLZ87.1 standard for appropriate
recommendations.
Also use face or dust mask if cutting operation is dusty.
(3). DON'T OVERREACH. Keep proper footing and balance at all times.
(4). NEVER STAND ON TOOL. Serious injury could occur if the tool is tipped or if the cutting
tool is accidentally contacted.
(5). NEVER LEAVE TOOL RUNNING UNATTENDED. TURN POWER OFF. Don't leave
tool until it comes to a complete stop.
(6). DRUGS, ALCOHOL, MEDICATION. Do not operate tool while under the influence of
drug, alcohol or any medication.
(7). MAKE SURE TOOL IS DISCONNECTED FROM POWER SUPPLY. While motor is
being mounted, connected or reconnected.
(8). ALWAYS keep hands and fingers away from the blade.
(9). STOP the machine before removing chips.
(10). SHUT- OFF power and clean the BAND SAW and work area before leaving the machine.
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Instruction Manual for BS-912 (B014)
03/12/2014

B. USE OF MACHINE:
(1). REMOVE ADJUSTING KEYS AND WRENCHES. Form habit of checking to see that
keys and adjusting wrenches are removed from tool before turning it "on".
(2). DON'T FORCE TOOL. It will do the job better and be safer at the rate for which it was
designed.
(3). USE RIGHT TOOL. Don't force tool or attachment to do a job for which it was not
designed.
(4). SECURE WORK. Use clamps or a vise to hold work when practical. It's safer than using
your hand frees both hands to operate tool.
(5). MAINTAIN TOOLS IN TOP CONDITION. Keep tools sharp and clean for best and safest
performance. Follow instructions for lubricating and changing accessories.
(6). USE RECOMMENDED ACCESSORIES. Consult the owner's manual for recommended
accessories. The use of improper accessories may cause hazards.
(7). AVOID ACCIDENTAL STARTING. Make sure switch is in “OFF” position before
plugging in power cord.
(8). DIRECTIONOF FEED. Feed work into a blade or cutter against the direction of rotation of
the blade or cutter only.
(9). ADJUST AND POSITION the blade guide arm before starting the cut.
(10). KEEP BLADE GUIDE ARM TIGHT, A loose blade guide arm will affect sawing
accuracy .
(11). MAKE SURE blade speed is set correctly for material being cut.
(12). CHECK for proper blade size and type.
(13). STOP the machine before putting material in the vise.
(14). ALWAYS have stock firmly clamped in vise before starting cut.
(15). GROUNDALL TOOLS. If tool is equipped with three-prong plug, it should be plugged
into a three-hole electrical receptacle. If an adapter is used to accommodate atwoprong receptacle,
the adapter lug must be attached to a known ground. Never removed the third prong.
C. ADJUSTMENT :
MAKE all adjustments with the power off. In order to obtain the machine. precision and correct
ways of adjustment while assembling, the user should read the detailed instruction in this manual.
D. WORKING ENVIRONMENT:
(1). KEEP WORK AREA CLEAN. Cluttered areas and benches invite accidents.
(2). DON'T USE IN DANGEROUS ENVIRONMENT. Don't use power tools in damp or wet
locations, or expose them to rain. Keep work area well-lighted.
(3). KEEP CHILEREN AND VISITIORS AWAY. All children and visitors should be kept a
safe distance from work area.
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Instruction Manual for BS-912 (B014)
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(4). DON’T install & use this machine in explosive, dangerous environment.
E. MAINTENANCE:
(1). DISCONNECT machine from power source when making repairs.
(2). CHECK DAMAGED PARTS. Before further use of the tool, a guard or other part that is
damaged should be carefully checked to ensure 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 part that is
damaged should be properly repaired or replaced.
(3). DISCONNECT TOOLS before servicing and when changing accessories such as blades, bits,
cutters, etc.
(4). MAKE SURE that blade tension and blade tacking are properly adjusted.
(5). RE-CHECK blade tension after initial cut with a new blade.
(6). TO RPOLONG BLADE LIFE ALWAYS release blade tension at the end of each work day.
(7).CHECK COOLANT DAILY Low coolant level can cause foaming and high blade
temperatures. Dirty or week coolant can clog pump, cause crooked. Cast, low cutting rate and
permanent blade failure. Dirty coolant can cause the growth of bacteria with ensuing skin
irritation.
(8). 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.
(9). TO PRNMT corrosion of machined surfaces when a soluble on is used as coolant, pay
particular attention to wiping dry the surfaces where fluid accumulates and does not evaporate
quickly, such as between the machine bed and vise.
F. SPECTIFIED USAGE:
This machine is used only for general metals cutting within the range of cutting capacity.
G. NOISE:
A weighted sound pressure level : 80 dB.
H. SAFETY DEVICE:
By the time the saw arm cover is opened, the interlock switch will function to stop the
machine. do not remove this switch from machine for any reason, and check it's function
frequently.
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Instruction Manual for BS-912 (B014)
03/12/2014

1.SPECIFICATION
MOTOR 3∮(1HP) 1∮(1.5HP)
919G (G9743) 60HZ 45 66 86 50HZ 38 55 72
Saw Blade Spee
d
(MPM) 912B 60HZ 32 60 88 115 50HZ 26 50 73 95
912G (G9743) 60HZ 148 216 282 50HZ 125 180 236
Saw Blade Speed
(FPM) 912B 60HZ 105 196 288 377 50HZ 85 164 240 312
Blade Size 25 x 0.9 x 2655 mm ( 1”x 0.035” x 104.5”)
Dimension LxWxH (mm) 1325x460x1080(G) 1380x460x1050(B)
N.W / G.W (kgs) 170 / 200(G) 160/185(B)
○(mm) 229(9”)
0°□(mm) 178x305(7”x12”)
○(mm) 150(6”)
Working Capacity
±45°□(mm) 127x150(5”x6”)
Packing Measurement (mm) LxWxH 1450x660x1150(G) 1420x530x1117(B)
Noise 80 dB MAX
2.TRANSPORTATION OF MACHINE:
Unpacking
1. Transportation to desired location before unpacking, please use lifting jack.(Fig. B)
2. Transportation after unpacking, please use heavy duty fiber belt to lift up the machine.
Fig. B
ALLWAYS KEEP PROPER FOOTING & BALANCE WHILE MOVING THIS MACHINE.
Installation:
As this machine weights 155 kg. It is recommended that the machine shall be transported, with
help of lifting jack.
Transportation Recommendation:
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Instruction Manual for BS-912 (B014)
03/12/2014

(1). Tighten all locks before operation.
(2). ALWAYS Keep proper footing & balance while moving this 155kgs machine, and only use
heavy duty fiber belt to lift the machine as Fig. A
(3). TURN OFF the power before wiring, & be sure
machine in proper grounding, Overload & circuit
breaker is recommended for safety wiring.
(4). CHECK carefully if the saw blade is running in
counter-clockwise direction if not , reverse the
wiring per circuit diagram then repeat the running
test.
(5). KEEP machine always out from sun, dust, wet,
raining area. 912(B.G)
6. MINIMUM ROOM SPACE FOR MACHINE OPERATION
7. MAKE PROPER TOOTH SELECTION
For maximum cutting efficiency and lowest cost per cut, it is important to select the blade with
the right number of teeth per inch (TPI) for the material being cut. The material size and shape
dictate tooth selection.
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Instruction Manual for BS-912 (B014)
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TOOTH
SELECTION
You need to consider:
1.The width of the cut. That is, the distance in the cut that each tooth must travel from the point it
enters the workpiece until it leaves the workpiece, and
2.The shape of the workpiece.
 Squares, Rectangles, Flats (Symbol : ■)
Locate the width of cut on the chart. (Inches on the outer circle and millimeters on the
inner circle.) Select the tooth pitch on the ring marked with the square shape which aligns
with the width of cut.
EXAMPLE: 6" (150mm) square, use a 2/3 Vari-Tooth.
 Round Sollds (Symbol : ●)
Locate the diameter of your workpiece on the chart. Select the tooth pitch on the ring
marked with the round shape which aligns with the size of stock you are cutting.
EXAMPLE: 4" (100mm) round, use a 3/4 Vari-Tooth.
 Tubing, Pipe, Structurals( Symbol : O H ^ )
Determine the average width of cut by dividing the area of the workpiece by the distance
the saw blade must travel to finish the cut. Locate the average width of cut on the chart.
Select the tooth Ditch on the ring marked with the tubing and structural shape which
aligns with the average width you are cutting.
EXAMPLE: 4"(100mm) outside diameter, 3"(75mm) inside diameter tubing.
4"(100mm) OD=12.5 sq.ln. (79cm2)
3"(75 mm ) ID = 7.0 sq.ln. (44cm2)
Area = 5.5 sq.ln. (35cm2)
5.5 sq.ln. (35cm2) / 4" (100mm) distance =1.38(35mm) average width
1.38" (35mm), use a 4/6 Vari-Tooth
NOTE: The band speed and cutting rate recommendations presented on this chart are
approximations and are to be used as a starting point for most applications. For exact
sawing parameters' consult your saw blade supplier.
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Instruction Manual for BS-912 (B014)
03/12/2014

8. BI-METAL SPEEDS AND FEEDS
These figures are a guide to cutting 4"(100mm) material (with a 314 Vari-Tooth) when using a
cutting fluid.
Increase Band Speed: 15% When cutting 1/4"(6.4mm) material (l0/l4 Vari-Tooth)
12% When cutting 3/4"(19 mm) material (6/10 Vari-Tooth)
10% When cutting 1-1/4"(32 mm) material(5/8 Vari-Tooth)
5% When cutting 2-1/2" (64 mm) material(4/6 Vari-Tooth)
Decrease Band Speed: 12% When cutting 8"(200mm) material(2/3 Vari-Tooth)
BAND SPEEDMATERIAL ALLOY
ASTM NO. FT./MIN M/MIN
173,932 314 96
330,365 284 87
623,624 264 81
230,260,272 244 74
280,264,632,655 244 74
101,102,110,122,172 234 71
1751,182,220,510 234 71
625,706,715,934 234 71
630 229 70
Coppe
r
Alloy
811 214 65
1117 339 103
1137 289 88
1141,1144 279 85
1141 HI STRESS 279 85
1030 329 100
1008,1015,1020,1025 319 97
1035 309 94
1018,1021,1022 299 91
1026,1513 299 91
A36(SHAPES),1040 269 82
1042,1541 249 76
1044,1045 219 67
1060 199 61
Carbon
Steel
1095 184 56
Ni-Cr-Mo 8615,8620,8622 239 73
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Instruction Manual for BS-912 (B014)
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Alloy Steel 4340,E4340,8630 219 67
8640, 199 61Ni-Cr-Mo
Alloy Steel E9310 174 53
A-6 199 61
A-2 179 55
A-10 159 49
D-2 90 27
Tool Steel
H-11,H-12,H-13 189 58
420 189 58
430 149 46
410,502 140 43
414 115 35
431 95 29
440C 80 24
304,324 120 36
304L 115 35
347 110 33
316,316L 100 30
Stainless
Steel
416 189 58
TELLTALE CHIPS
Chips are the best indicator of correct feed force. Monitor chip information and adjust feed
accordingly.
Thin or powdered chips – increase feed rate or reduce band
speed.
Burned heavy chips – reduce feed rate and/or band speed.
Curly silvery and warm chips – optimum feed rate and band
speed.
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Instruction Manual for BS-912 (B014)
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9. ASSEMBLY
A 1 HP, motor, split phase or capacitor-start it recommended for best economical performance.
Counterclockwise rotation is required. Note that rotation can be reversed by ollowing directions
given on terminal or nameplate.
(1). Assemble the motor Mounting plate to the head using the long bolt Note that the flat side of
the plate faces up.
(2). Assemble the guard plate to the head using the screw and Lock Washer and the Carriage Bolt
Washer and Wing Nut are used to secure the motor mounting plate to the Guard plate through the
slotted hole in the Guard plate. These components also serve to position and lock the motor in
place for proper speed/ belt adjustment.
(3). Place the spacer over the long Bolt and secure it wit the nut .
(4). Secure the Motor to the Motor Mounting plate with the four bolts and nuts. Note, that the
motor shaft is placed through the large opening in the Guard plate and must be pareallel with the
drive Shaft.
(5). Assemble the Motor Pulley, the smaller of the two provided, to the motor shaft Note, the
larger diameter must be closest to the motor.
Do not tighten the set screw.
(6). Assemble the Driven Pulley, the larger of the two provided, to the protruding drive Shaft Note
the small diameter must be closest to the bearing.
Do not tighten the set screw.
(7).Place the belt into one of the pulley grooves and the other end into the respective grooves of
the second pulley.
(8) Line up the belt and both pulleys such that the belt is running parallel in the pulley grooves.
(9).Tighten the set screws of both pulleys in this position.
(10). Place the belt into proper pulley combination for proper blade speed. See material cutting
Chart .
(11). Adjust the position of the Motor to obtain approximately 1/2" depression in the belt when
applying pressure with your thumb.
(12). Tighten the head screw Holding the Motor Mounting plate to the Guard plate.
(13). Connect the Electrical Harness to the motor terminal box. The motor should be protected
with a time delay fuse or circuit breaker with a rated amperage slightly greater than the fullload
amperage of the motor.
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Instruction Manual for BS-912 (B014)
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10. OPERATION
WORK SET UP
(1). Raise the saw head to the highest position.
(2). Open vise to accept the Piece to be cut by rotating the wheel at the end the base.
(3). Place workpiece on saw bed. If the piece is long, support the end.
(4). Clamp workpieced securely in vise.
WORK STOP ADJUSTMENT
(1). Loosen the thumb screw holding the work stop casting to the shaft.
(2). Adjust the work stop casting to the desired length position.
(3). Rotate the work stop to as close to the bottom of the cut as possible.
(4). Tighten thumbscrew.
(5). DO NOT ALLOW the blade to rest on the work while the motor is shut off.
BLADE SPEEDS
When using your Band saw always change the blade speed to best suit the material being cut
the material Cutting Shirt givers suggested settings for several materials.
Speed F.P.M Belt Groove Used
912G (G9743) 912B
Material
60Hz 50Hz 60Hz 50Hz Motor
Pulley
Saw
Pulley
Tool, Stainless
Alloy Steels
Bearing Bronze
148 125 105 85 Small Largest
196 164 Medium Large
Medium to High
Carbon Steels
Hard Brass or Bronze
Low to Medium
Carbon Steel
Soft Brass
216 180
288 240 Large Medium
Aluminum ,Plastic 282 236 377 312 Largest Small
MANUAL OF GEAR TYPE SPEED CHANGING
(1) Select the proper cutting speed according to the material of work-pieces
and blade select chart.
(2) Turn the speed-changing handle directly for the necessary speed.
(3) Changing speed during cutting is prohibited.
(4) But changing speed when machine is stopped and running (before cutting)
is available.
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Instruction Manual for BS-912 (B014)
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BLADE DIRECTION OF TRAVEL
Be sure the Made is assembled to the pulleys such that the vertical edge engages the work piece
first.
BLADE MOVEMENT
BladeDirection
STARTING SAW:
1.Switch button function description
**Coolant switch was integrated in with the toggle switch. Coolant function is ON when you start
the machine running, If you do not need the coolant function, please turn of the rocker switch on
the coolant pump.**
A ↓Stop button
B ↑Start button
To
gg
le Switch
2.Switch button function description. (FOR CE ONLY)
(Coolant Selection Switch)
(Start Button)
(
Sto
p
Button
)
(Emergency Push Button)
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Instruction Manual for BS-912 (B014)
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CAUIION: NEVER OPERATE SAW WITHOUT BLADE GUARDS IN PLACE.
Be sure the blade is not in contact with the work when the motor is started. Start the motor, allow
the saw to come to full speed, then begin the cut by letting the head down slowly onto the work.
DO NOT DROP OR FORCE. Let the weight of the saw head provide the cutting force. The saw
automatically shuts off at the end of the cut.
BLADE SELECTION
A 8-tooth per inch, general-use blade is furnished with this metal Cutting Band Saw. Additional
blades in 4, 6, 8, and 10 tooth sizes are available. The choice of blade pitch is governed by the
thinness of the work to be cut: the thinner the workpiece, the more teeth advised. A minimum of
three (3) teeth should angage the workpiece at all times for proper cutting If the teeth of the Blade
are so far apart that they straddle the work, severe damage to the workpiece and to the Made can
result .
CHANGING BLADE
Raise saw head to the highest position and open the blade guards. Loosen tension screw knob
sufficiently to allow the saw blade to slip off the wheels. Install the new blade with teeth slanting
toward the motor as follows:
(1). Place the blade in between each of the guide bearings.
(2). Slip the blade around the motor pulley (bottom) with the left hand and hold in position.
(3). Hold the blade taut against the motor pulley by pulling the blade upward with the right hand
which is placed at the top of the Made.
(4). Remove left hand from.bottom pulley and place is at the top aide of the Made to continue the
application on the upward pull on the blade.
(5). Remove right hand from blade and adjust the position of the top pulley to permit left hand to
slip the blade around the pulley using the thumb, index and little finger as guides.
(6). Adjust the blade tension knob clockwise until it is just right enough so no blade slippage
occurs. Do not tighten excessively.
(7). Replace the blade guards.
(8). Place 2-3 drops of oil on the blade.
TRU- LOCK VISE SYSTEM INSTRUCTIONS
(a)
(b)
(1) (2) (3)
(1) The position of the vise when tightened.
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Instruction Manual for BS-912 (B014)
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(2) The position of the vise when loosened. ( Half opened).
(3) The position of the vise when loosened. (Completely opened).
To operate, proceed as follows:
1) Rise the arm 2” above the workpiece, close the cylinder valve to maintain the arm 2” above the
workpiece.
2) Put your workpiece on the table. Move the vise handle (a) upwards to an angle of 45 degree
(a-Half opened) to loosen the vise.
Move the vise jaw bracket against the workpiece by turning the rectangular handle (b) . Push
down on the vise handle (a) to lock the workpiece in position.
3) To loosen the workpiece from the vise, hold the workpiece and lift the vise handle (a) to a 90
degree position (completely opened). Remove workpiece.
QUICK VISE ADJUSTMENT FOR ANGLE CUT
(1). Loosen the A. B. C. D. Screw.
(2). Adjust rear vise to the threaded hole position. (E)
(3). Set the scale to the desired angle.
(4). Adjust the front vise (F) to parallel the rear vise(E)
(5). Tighten the A. B. C. D. Screw.
11. BLADE GUIDE BEARING ADJUSTMENT
ATTENTION: This is the most important adjustment on your saw. It is impossible to get
satisfactory work from your saw if the blade guides are not properly adjusted. The blade guide
bearings on your metal. Cutting Band Saw are adjusted and power tested with several test cuts
before leaving the factory to insure proper setting The need for adjustment should rarely occur
when the saw is used properly. If the guides do get out of adjustment though, it is extremely
important to readjust immediately. If improper adjustment in maintained, the blade will not cut
straight, and if the situation is not corrected it will cause serious blade damage. Because guide
adjustment is a critical factor in the performance of your saw, it is always best to try a new blade to
see if this will correct poor cutting before beginning to adjust. If a blade becomes dull on one side
sooner than the other, for example, it will begin cutting crooked. A blade change will correct this
problem the gJide adjustment will not. If a new blade does not correct the problem, check the blade
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Instruction Manual for BS-912 (B014)
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guides for proper spacing.
NOTE: There should be from 000 (just touching) 001 clearance between the blade and guide
bearings to obtain this clearance adjust as follows:
1. The inner guide bearing is fixed and cannot be adjusted.
2. The outer guide bearing is mounted to an eccentric bushing and can be adjusted.
3. Loosen the nut while holding the bolt with an Alien wrench.
4. Position the eccentric by turning the bolt to the desired position of clearance.
5. Tighten the nut.
6. Adjust the second blade guide bearing in the same manner.
REMARK:
1. Adjust the tension of blade until the back of the blade(A) against the blade wheel (front)
lightly.
2. Be sure the nut (E) is tightened.
3. Turn the eccentric shaft(B) counterclockwise, when the bearing(D) touches the saw blade
properly, tighten the nut(E).
4. To adjust, loosen set screw(F) and move the blade adjustable up or down until it lightly
touches the back of the blade(A).
5. The carbide blade guides(L)Fig.1,should also be adjusted so they lightly touch the blade
by loosening screws(M).
6. Repeat 1. 2, 3, 4and 5 steps to adjust the other side's blade guide bearings(G).
7. Correct the base and blade to be a vertical position with a scale. If necessary, loosen set
screw(F).
8. Set down the blade frame, correct the jaw vise(H) and blade to be a vertical position with a
scale then tighten the set screws(I).
9. Loosen set screw(K), move front jaw vise(J) to against rear jaw vise(H) tightly. Finish
correcting by tighting set screw(K)
A C
M
D
G L
Fig.2
Fig.1
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Instruction Manual for BS-912 (B014)
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12. BLADE TRACK ADJUSTMENT
(1). Open the blade guard.
(2). Remove the blade guide assemblies (top and bottom)
(3). Loosen the hex head screw in the tilting machanism to a point where it is loose but snug.
(4). With the machine running, adjust both the set crew and blade tension knob simultaneously to
keep constant tension on the blade. The set screw and blade tension knob are always turned in
opposite directions, ie, when one is turned clockwise the other is turned counterclockwise.
The blade is tracking properly when the back side just touches the shoulder of pulley or a
slight gap appears near the center line of the pulley. Care should be taken not to over-tighten
the saw blade since this will give a false adjustment and limit life of the blade.
(5). Tighten the hex head screw in tilting mechanism. IMPORTANT: Sometimes in trying to
make this critical adjustment it is possible to cause the basic setting to be misaligned. Should
this occur, proceed as follows:
a. Loosen the set screw and back it out as far as it can go and still remain in the threaded hole.
b. Turn the hex head screw clockwise until it stops (do not tighten).
c. Turn the set screw clockwise until it bottoms, then continue for half a turn and check the
tracking by turning on the machine.
d. If further adjustment is required, go back to step 4.
(6). Turn off power to the machine.
(7). Replace the clade guide assemblies--it may be necessary to loosen the blade tension alightly.
(8). Adjust the vertical position of blade guide bearing assemblies so that the back side of the
blade just touches the ball bearing.
(9). Make a final run to check tracking. It required, touch up adjustment (See stop 4)
(10). Replace the blade guards.
Hydraulic Feed Adjustment
(1) To adjust the feeding rate when in cutting, Turn the volume valve (A) clockwise for faster
feeding, counterclockwise for slower feeding.
(2) When cutting feed is too fast, raise the saw arm, then slower the feed rate to prevent blade
damage.
BLADE SPEEDS FOR GEAR BOX:
When using your Band saw always change the blade speed to best suit the material being
cut the material Cutting Sheet givers suggested settings for several materials.
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Instruction Manual for BS-912 (B014)
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Speed M.P.M
Material 60Hz 50Hz
Tool Steel
Stainless steel
Alloy Steel
Cast-iron steel
45 38
Low-alloy Carbon Steel
Soft Brass
Soft iron
66 55
Aluminum
Plastic 86 72
MANUAL OF GEAR TYPE SPEED CHANGING
Exactly set the handle to the 3 position
1.Disconnect the metal belt saw from the electrical power supply.
2.Select the proper cutting speed according to the material of work-pieces and blade select chart.
3.Turn the speed-changing handle (A) directly for the necessary speed.
4.Changing speed during cutting is prohibited.
5.But changing speed when machine is stopped and running (before cutting) is available.
A
***Please make sure the oil of Gear Box is between 950cc ~ 1000cc to maintain the
machine in a proper operation.
***Let the metal belt saw run for a few minutes before beginning the oil change.
This will heat the oil, making it flow more easily out of the outlet hole.
13. MAINTENANCE
CAUTION: MAKE CERTAIN THAT THE UNIT IS DISCONNECTED FROM THE POWER
SOURCE BEFORE ATTEMPTING TO SE RV ICE OR REMOVE ANY COMPONENT.
That's easier to keep machine in good condition or best performance by means of maintaining it at
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Instruction Manual for BS-912 (B014)
03/12/2014