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Operator’s Manual
Metal Band Saw
CAUTION: Read and follow all Safety Rules
and Operating Instructions before First Use
of this Product. Keep this manual with tools.
GFW5012-1708--O/M
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Technical Specification
Attention: Please choose proper power source, voltage and frequency that are shown in the label for your
metal band saw.
Metal band saw GFW5012
Motor Power 550 W
Saw Blade 1638X 12.7 X 0.65 mm
Cutting Capacity at 90 º
● Φ115 mm
■ 115X115mm
▌ 100X140mm
Cutting Capacity at 45 º
● Φ70 mm
■ 70X70mm
▌ 70X90mm
Cutting Angle Adjustment 0—45 º
Blade Speed 50Hz 21 / 30 / 44 m/min
60Hz 25 / 35 / 52 m/min
SAFETY
WARNING: To avoid electrical hazards, fire hazards, or damage to the tool, use proper circuit protection.
Use a separate electrical circuit for your tools. To avoid shock or fire, replace power cord immediately if it is worn, cut or
damaged in any way.
GENERAL SAFETY INSTRUCTIONS
WARNING: Read carefully these Operating Instructions. Familiarise with the controls and proper use of the
machine. Keep the Operating Instructions for future reference. The warning labels with instructions attached to
the machine provide important information on safe operation.
1. READ and become familiar with the entire Operator’s Manual. LEARN the tool’s application, limitations and possible
hazards.
2. REMOVE ADJUSTING KEYS AND WRENCHES. Form a habit of checking to see that keys and adjusting wrenches are
removed from the tool before turning ON.
3. KEEP WORK AREA CLEAN. Cluttered areas and benches invite accidents.
4. 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.
5. KEEP CHILDREN AWAY. All visitors should be kept at a safe distance from work area.
6. MAKE WORKSHOP CHILDPROOF with padlocks.
7. DON’T FORCE THE TOOL. It will do the job better and safer at the rate for which it was designed.
8. USE THE RIGHT TOOL. Do not force tool or attachment to do a job for which it was not designed.
9. USE PROPER EXTENSION CORD. Make sure your extension cord is in good condition. When using an extension cord,
be sure to use one heavy enough to carry the current your product will draw. An undersized cord will result in a drop in
line voltage and in loss of power that will cause the tool to overheat.
10. WEAR PROPER APPAREL. Do not wear loose clothing, gloves, neckties, rings, bracelets, or other jewelry that may get
caught in moving parts. Non-slip footwear is recommended. Wear protective hair covering to contain long hair.
11. ALWAYS WEAR EYE PROTECTION. Wear goggles for protection against projected chips.
12. DISCONNECT TOOLS before servicing; when changing blade and other part.
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13. USE RECOMMENDED ACCESSORIES. Consult the Operator’s Manual for recommended accessories. The use of
improper accessories may cause serious injury.
14. NEVER STAND ON TOOL. Serious injury could occur if the tool is tipped or if the cutting tool is unintentionally contacted.
15. CHECK FOR DAMAGED PARTS. Before further use of the tool, a guard or other part that is damaged 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 part that is damaged should be properly repaired or replaced.
16. NEVER LEAVE TOOL RUNNING UNATTENDED. TURN POWER “OFF”. Don’t leave tool until it comes to a complete
stop.
17. DON’T OVERREACH. Keep proper footing and balance at all times.
18. MAINTAIN TOOLS WITH CARE. Keep tools sharp and clean for best and safest performance. Follow instructions for
lubricating and changing accessories.
19. DO NOT use power tools in the presence of flammable liquids or gases.
20. NEVER REMOVE GUARD, SAFETY DIVICES OR ART OF THE MACHINE.
21. BE CAREFUL. Pay attention to what you are doing. Work reasonably. Do not use the machine when you are tired.
22. HAVE YOUR MACHINE REPAIRED BY AN EXPERT ONLY! This machine meets the applicable safety provisions. Any
repairs may only be executed by an expert, using original spare parts; otherwise, the user could face a risk of injury.
23. Children and persons not familiarised with the machine and persons with limited physical, sensory and mental skills must
not use the machine.
SPECIFIC SAFETY INSTRUCTIONS FOR THE MACHINE
1. Secure the machine to floor before operating.
2. The machine must be switched off before inserting material to be cut in the vice or before removing material to be cut
from the vice.
3. Keep your hands and fingers in a safe distance from the running saw blade at all times.
4. The saw blade must not be broken by hand.
5. Safety equipment and guards, etc, must not be removed.
6. Never remove the cutting chips by hand. Use a brush at all times.
7. Never leave the machine when in operation.
ELECTRICAL REQUIREMENTS
POWER SUPPLY AND MOTOR SPECIFICATIONS
WARNING: To avoid electrical hazards, fire hazards, or damage to the tool, use proper circuit protection. Use a
separate electrical circuit for your tools. To avoid shock or fire, if power cord is worn or cut, or damaged in any way, have it
replaced immediately.
GROUNDING INSTRUCTIONS
WARNING: This tool must be grounded while in use to protect the operator from electrical shock.
IN THE EVENT OF A MALFUNCTION OR BREAKDOWN, grounding provides a path of least resistance for electric current
and reduces the risk of electric shock. This tool is equipped with an electric cord that has an equipment-grounding conductor
and a grounding plug. The plug MUST be plugged into a matching receptacle that is properly installed and grounded in
accordance with ALL local codes and ordinances.
DO NOT MODIFY THE PLUG PROVIDED. If it will not fit the receptacle, have the proper receptacle installed by a qualified
electrician.
IMPROPER CONNECTION of the equipment-grounding conductor can result in risk of electric shock. The conductor with
green insulation (with or without yellow stripes) is the equipment-grounding conductor. If repair or replacement of the electric
cord or plug is necessary, DO NOT connects the equipment-grounding conductor to a live terminal.
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CHECK with a qualified electrician or service person if you do not completely understand the grounding instructions, or if you
are not sure the tool is properly grounded.
Refer to nether picture:
Properly Ground Outlet
Grounding Prong
3-Prong Plug
WARNING: Improper connection of equipment grounding conductor can result in the risk of electrical shock. Equipment
should be grounded while in use to protect operator from electrical shock.
WARNING: This machine is for indoor use only. Do not expose to rain or use in damp locations.
GUIDELINES FOR EXTENSION CORDS
USE PROPER EXTENSION CORD. Make sure your extension cord is in good condition. When using an extension cord,
be sure to use one heavy enough to carry the current your product will draw. An undersized cord will cause a drop in line
voltage, resulting in loss of power and cause overheating.
Be sure your extension cord is properly wired and in good condition. Always replace a damaged extension cord or have it
repaired by a qualified person before using it. Protect your extension cords from sharp objects, excessive heat and damp or
wet areas.
ACCESSORIES AND ATTACHMENTS
RECOMMENDED ACCESSORIES
WARNING: To avoid injury:
• Use only accessories recommended for machine.
• Follow instructions that accompany accessories. Use of improper accessories may cause hazards.
• Use only accessories designed for this machine to avoid injury from thrown broken parts or work pieces.
• Do not use any accessory unless you have completely read the instruction or operator’s manual for that
accessory.
CARTON CONTENTS
UNPACKING AND CHECKING CONTENTS
Carefully unpack the machine and all its parts, and compare against the illustration following.
WARNING:
• To avoid injury from unexpected starting, do not plug the power cord into a power source receptacle during unpacking and
assembly. This cord must remain unplugged whenever you are assembling or adjusting the machine.
• If any part is missing or damaged, do not plug machine in until the missing or damaged part is replaced, and assembly is
complete.
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TABLE OF LOOSE PARTS
Unpack carton; check you machine to see parts listed below:
A. Band saw X1
B. Stand legs X2
C. Tool tray X1
D. Corner Support Braces X4
E. Wheels X2
F. Wheel mounting shaft X1
G. Wheel Mounting Bracket X1
H. Work Stop rod X1
I. Work Stop X1
J. Transport handle X1
K. Pulley Cove X1
L. V-Belt X1
M. Pulleys with Keys X2
N. Table X1
O. Table Support X1
P. Hardware bag (not shown)
A
C
E
D
FG
H
I J K M
N
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B
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ASSEMBLY
To assemble the band saw:
1. Unfold the two stand leg assemblies, they are
hinged on the edges for easy set up.
2. Use the M6-1 x 12 hex bolts, M6-1 hex nuts, and
6mm flat washers to install the corner support braces
in the bottom corners of the leg assemblies.
3. On one of the leg assemblies, attach the wheel
mounting bracket along with the corner support braces
to the outside bottom edge.
4. Slide the wheel mounting shaft through the holes in
the wheel mounting bracket.
5. Slide the wheels onto the axle on the outside of the
mounting brackets, and secure them with the cotter
pins.
6. On the other leg, insert the handle into the
pre-drilled holes and secure it with the cotter pins.
7. With the help of an assistant, lift the band saw onto
a pair of closely spaced sawhorses or other suitable
support.
8. Attach the legs to the band saw with the M8-1.25 x
25 hex bolts, 8mm flat washers, and M8-1.25 hex
nuts.
Corner
Support
Braces
Wheel
Mounting
Bracket
Cotter pin
Cotter pin
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9. Remove the machine from the sawhorses, then
install the tool tray in the middle of the stand with the
M6-1 x 12 pan head screws, 6mm flat washers and
M6-1 hex nuts.
10. Check to see if the bands saw is relatively level,
then final tighten all the nuts.
11. Place the pulley cover over the motor and gear
shafts, and secure it with the pre-installed M6-1 x 12
pan head screws and 6mm flat washers.
12. Connect the two plugs together to make them
firmly connection.
(This plug is for the interlock switch in pulley cover.
The interlock switch is an alternative part. If your
machine has not this part, please skip the step.)
13. Open the pulley cover and fix the pulley cover by
using the pre-installed screw and washer.
Insert the keys into the slots on the pulley shafts.
Slide the large diameter motor pulley onto the motor
shaft
Plug
Screw and
washer
Motor pulley
with key
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14. Install the worm gear pulley with the small diameter
wheel on the shaft closest to the gear box.
15. Use a straightedge to check the alignment of the
pulley wheels, and adjust them as needed.
16. When the pulley wheels are aligned, tighten the set
screws on both pulleys.
17. Unthread the motor lock bolt, then pivot the motor up
and slide the v-belt into the pulley grooves.
18. Release the motor, letting its weight tension the
v-belt, then thread the motor lock bolt against the side of
the band saw.
19. Install the work stop shaft into the side of the band
saw then lock it in place by tightening the set screw.
20. Slide the work stop onto the end of the shaft and lock
it into position.
Motor lock
bolt
Work stop
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ADJUSTMENTS
Warning: Turn off the machine and disconnect from the power supply before doing any adjustment.
1. Vise adjustment
To use the vise:
Loosen the two hex bolts.
Use the scale as a guide to set your angle or use a machinist square to set the angle of the vise,
Tighten the hex bolts.
Loosen the hex bolt on the opposite jaw so the jaw can float, then match the angle of the workpiece
and retighten the hex bolt.
Tighten the vise against the workpiece.
2. Blade guides adjustment
Loosen the knob and slide the blade guide as
close to the workpiece as possible, then
re-tighten the knob.
3. Feed rate adjustment
The feed rate is controlled by the spring and
handle
To adjust the feed rate:
Slower: twist the handle clockwise to add tension
to the spring.
Faster: twist the handle counterclockwise to
remove tension from the spring.
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4. Blade speed adjustment.
The speed can easily be adjusted by changing the
v-belt placement.
To change the blade speeds:
Loosen the motor tension bolt to allow the motor to
pivot
Raise the motor to relieve the belt tension and
position the belt in the desired pulley alignment.
Release the motor and let its weight tension the
belt.
Tighten the motor tension bolt back against the
frame of the band saw.
5. Head lock pin
The head locking pin safely secures the head in the down position. To ensure the head does not
unexpectedly spring up and tip the band saw over, this locking pin must be properly inserted when the
band saw is not in use or before moving it.
To use the head locking pin:
Fully lower the head down, then insert the locking pin through the holes in the head pivot arm and base,
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OPERATION
Horizontal Cutting
Use the work stop to quickly and accurately cut multiple pieces of stock to the same length
Clamp the material firmly in the vise jaws to ensure a straight cut through the material.
Let the blade reach full speed before engaging the workpiece. Never start a cut with the blade in
contact with the workpiece.
Chips should be curled and silvery. If the chips are thin and powder like, increase your feed rate.
If the chips are burned, reduce the blade speed.
Wait until the blade has completely stopped before removing the workpiece from the vise, and avoid
touching the cut end—it could be very hot!
Vertical Cutting
Workpieces that cannot be properly supported or
stabilized without a vise should not be cut in the vertical
position
Make sure that the vertical table assembly is securely
fastened to the band saw frame so it will adequately
support the workpiece.
Always keep your fingers away from the blade
Adjust the blade guides as close as possible to the
workpiece to minimize side-to-side blade movement.
To assemble the bandsaw for vertical cutting:
1. Disconnect band saw from power.
2. Remove the two flat head screws and the blade guide
cover
3. Install the table and replace the two screws removed in
Step 2.
4. Install the table bracket with the preinstalled hex bolt, the
flat head screw, and hex nut
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5. Place a level on the table, then use the adjustment bolt to make the table level.
6. Install the safety bracket and lock it in place with the pin to keep the saw from falling.
MAINTENANCE
Warning: Turn off the machine and disconnect from the power supply before conducting maintenance
work or settings.
Change the saw blade
Raise the head of the band saw to the vertical position, use the head locking pin to hold it in place,
then remove the wheel access cover.
Loosen the tension knob and slip the blade off of the wheels.
Install the new blade through both blade guide bearings and around the bottom wheel, check to make
sure the blade teeth are facing toward the work piece.
Hold the blade around the bottom wheel with one hand and slip it around the top wheel with the other
hand, keeping the blade between the blade guide bearings.
Tighten the tension knob so the blade will not slip on the wheels upon start up.
Machine care
Usually check the condition of the power supply cords and replace them if they are broken, or even
worse if the internal wires are shown.
Use a brush and a shop vacuum to remove chips and other debris from the machine.
Always keep the machine handgrip clean to prevent accidental slipping during use.
Remove the processing residues from the cutting area and the blade guides whenever necessary.
If you do not intend to use the sawing machine for a long time, clean it and put it in a dry place if
possible. In these cases it is advisable to slacken off the blade so that it is not kept for any reason.
To ensure effective machine operation, check the condition of the blade daily and sharpen it
whenever necessary.
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TROUBLESHOOTHING
PROBLEM CAUSE SOLUTION
The motor does not work Defective motor, power cable or
plug
Safety cover is open, interlock
switch not work
Specialized personnel should
check the machine
Close the safety cover
Machine stalls or is
underpowered.
Wrong blade for the workpiece
material (metal).
Feed rate too fast for task.
V-belt slipping.
Use blade with correct properties
for your type of cutting.
Decrease feed rate.
Replace bad v-belt and re-tension.
Machine has vibration or
noisy operation.
V-belt is slapping belt cover.
V-belt worn or loose.
Pulley is loose.
Inspect belt cover for proper
installation.
Inspect/replace belt with a new
one.
Realign/replace shaft, pulley,
setscrew, and key as required.
Teeth are ripping from the
blade.
The feed pressure is too heavy
and the blade speed is too slow; or
the blade TPI is too coarse for the
workpiece.
The workpiece is vibrating in the
vise.
The blade gullets are loading up
with chips.
decrease the feed pressure or
chose proper blade
Re-clamp the workpiece in the
vise, and use a jig if required.
Use a coarser-tooth blade.
Inaccurate cut squaring Excessive cutting pressure
Incorrect blade tooth in relation to
the workpiece
Incorrect adjustment of the sliding
blade guide
Incorrect cutting speed in relation
to work piece
The workpiece is wrongly
positioned in the vice
Poor blade tension.
Decrease cutting pressure
Chose proper blade for workpiece
Check blade guide adjustment
Adjust to correct cutting speed
Check workpiece positioning and
clamping in the vice
Check blade tension
The blade tends to protrude
from the guide
Excessive blade tension
Incorrect eccentric blade guide
adjustment
The blade slips on the pulleys,
caused by oil or grease required for
cutting operations
Check blade tension
Check eccentric blade guide
adjustment
Never use any type of lubricant or
coolant for the cutting operations;
specialized personnel should check
and replace the pulleys, if necessary,
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ASSEMBLY DIAGRAM
△A1，△A2 Alternative assembly parts. Your machine has been equipped by △A1 or △A2 assembly part.
◇ Alternative assembly parts . Your machine may not have this assembly part.
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PART LIST
NO. DESCRIPTION QTY
1 Worm shaft pulley 1
2 Set screw 1
3 Pan head screw 2
4 Flat washer 2
5 Flat head screw 1
6 Bearing cover 1
7 Oil seal 1
8 Ball bearing 1
9 Bearing bushing 1
10 Ball bearing 1
11 Worm gear 1
12 V belt 1
13 Hex head bolt 6
14 Lock washer 6
15 Flat washer 6
16 Gear box cover 1
17 Gear box gasket 1
18 Key 2
19 Worm gear 1
20 Spring pin 1
21 Worm gear shaft 1
22 Hex head bolt 1
23 Hex head bolt 1
24 Hex head bolt 1
25 Flat washer 1
26 Hex head bolt 4
27 Lock washer 4
28 Sliding block 1
29 Flat washer 4
30 Guide plate 2
31 Shaft block 1
32 Shaft 1
33 Blade tension nut 1
34 Spring 1
35 Flat washer 1
36 Blade tension knob 1
NO. DESCRIPTION QTY
37 Bushing 1
38 Ball bearing 1
39 Retaining ring
40 Rear blade wheel 1
41 Flat washer 1
42 Lock washer 1
43 Socket head screw 1
44 Switch cut off finger 1
45 Flat washer 1
46 Lock washer 1
47 Hex head screw 1
48 Rear guide tighten knob 1
49 Flat washer 1
50 Interlock switch assembly 1
50-1 Flat washer 2
50-2 Pan head screw 2
51 Ball bearing 2
52 Bushing 1
53 Oil seal 1
54 Bearing cover 1
55 Flat head screw 3
56 Bushing 1
57 Front blade wheel 1
58 Set screw 1
59 Retaining ring 1
60 Flat washer 4
61 Pan head screw 4
62 Frame 1
62-1 Hex head bolt 1
62-2 Hex nut 1
63 Hex head bolt 1
64 Flat washer 1
65 Pan head screw 1
66 Lock washer 1
67 Flat washer 1
68 Hex head bolt 1
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NO. DESCRIPTION QTY
69 Motor support plate 1
70 Hex head bolt 1
71 Hex nut 1
72 Flat washer 4
72-1 Lock washer 4
73 Hex head bolt 4
74 Hex head bolt 1
75 Belt cover 1
76 Knob 1
77 Flat washer 1
78 Pan head screw 1
79 Set screw 2
80 Motor pulley 1
81 Key 1
82 Motor 1
83 Blade 1
84 Front guide base 1
85 Flat washer 1
86 Lock washer 1
87 Hex head bolt 1
88 Hex nut 2
89 Lock washer 2
90 Ball bearing 1
91 Shaft 1
92 Front blade guide 1
93 Shaft 2
94 Ball bearing 1
95 Retaining ring 2
96 Front blade guard 1
97 Flat head screw 2
98 Hex nut 2
99 Lock washer 2
100 Hex head bolt 1
101 Lock washer 1
102 Flat washer 1
103 Ball bearing 1
104 Shaft 1
105 Rear blade guide 1
NO. DESCRIPTION QTY
106 Shaft 2
107 Ball bearing 1
108 Retaining ring 2
109 Rear blade guard 1
110 Flat washer 2
111 Pan head screw 2
112 Rear guide base 1
113 Pan head screw 1
114 Flat washer 1
115 Frame guard 1
116 Pin with chain 1
117 Socket head screw 2
118 Lock washer 2
119 Flat washer 2
120 Set screw 1
121 Pivot block 1
122 Spring 1
123 Spring adjusting screw 1
124 Hex head bolt 2
125 Lock washer 2
126 Flat washer 2
127 Screw support plate 1
128 Adjusting rod 1
129 Knob 1
130 Adjusting rod support 1
131 Hex head bolt 2
132 Lock washer 2
133 Flat washer 2
134 Hex nut 2
135 Pivoting rod 1
136 Spring pin 1
137 Flat washer 1
138 Hex head bolt 1
139 Flat washer 1
140 Hex head bolt 1
141 Flat washer 1
142 Vise jaw 1
142-1 Flat washer 1
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NO. DESCRIPTION QTY
142-2 Hex nut 1
143 Hex head bolt 1
144 Flat washer 1
145 Sliding vise jaw 1
146 Base 1
147 Pan head screw 1
148 Flat washer 1
149 Bushing 2
150 Hex head bolt 1
151 Hex nut 1
152 Set screw 1
153 Safety bracket 1
154 Flat washer 1
155 Hex head bolt 1
156 Hex nut 1
157 Cord clamp 1
158 Pin with chain 1
159 Flat washer 1
160 Pan head screw 1
161 Wing nut 1
161-1 Hex head bolt 1
162 Work stop 1
163 Work stop rod 1
164 Lock switch assembly 1
165 Magnetic switch assembly 1
166 Serriated washer 2
167 Pan head screw 2
168 Bushing 1
169 Power cord 1
170 Angle scale 1
171 Rivet 2
172 Screw support block 1
173 Flat washer 2
174 Lock washer 2
175 Hex head bolt 2
176 Vise nut 1
177 Lead screw 1
178 Retaining ring 1
NO. DESCRIPTION QTY
179 Hex head bolt 1
180 Crank handle 1
181 cotter pin 2
182 Transport handle 1
183 Leg assembly 2
184 Connecting plate 1
185 Hex nut 4
186 Flat washer 4
187 Pan head screw 4
188 Leg corner 4
189 Hex nut 8
189-1 Flat washer 8
190 Transport wheel 2
191 Hex head bolt 8
192 Flat washer 8
193 Lock washer 8
194 Wheel stand 1
195 Shaft 1
196 cotter pin 4
197 Table 1
198 Flat head screw 2
199 Table support 1
200 Flat washer 2
201 Hex nut 2
202 Pan head screw 1
203 Cord clamp 1
204 Hex nut 2
205 Flat washer 2
206 Interlock switch assembly 1
207 Pan head screw 2
208 Bushing 1
209 Hex nut 2
210 Lock washer 2
211 Flat washer 2
212 Switch operating finger 1
213 Pan head screw 2
214 Switch operating finger 1
215 Line with connector 1
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