Sumake ST-CT140 User manual

SUMAKE PNEUMATIC TOOLS
2” Air Circular Saw
W/72T Saw Blade
ST-CT140
SUMAKE INDUSTRIAL CO., LTD
4F,NO.351,Yangguang St.,Neihu District TAIPEI, TAIWAN, ZIP:114-91
Specification:
Free Speed
620 r/min
Blade
72T
Motor
0.5HP
Air Consumption
13 CFM (370 L/min)
Overall Length
10-1/4” (260mm)
Air Inlet (PT)
1/4” (6.35 mm)
Air Hose (I.D.)
3/8” (10 mm)
Air Pressure
90 psi (6.3 bar)
Net Weight
2.87lb (1.3kg)
Noise and Vibration:
Vibration
EN ISO 28927-4
Noise
EN ISO 15744
Remark
Load:
3.7 m/s²
Sound Pressure Level
No load: 83 dB(A)
Please always
wear ear
protector at
environment
noise level > 80
dB(A) due to
risk of impaired
hearing!
Sound power level
No load: 94 dB(A)
Uncertainty
K= 1.5 m/s²
Uncertainty
K= 3dB
ST-CT140-S-2012A-D5F

EC DECLARATION OF CONFORMITY
We: SUMAKE INDUSTRIAL CO., LTD.
4F, No. 351, Yangguang St., Neihu District, Taipei City, Taiwan
declare in sole responsibility that the equipment
Equipment： 2” AIR CIRCULAR SAW W/72T SAW BLADE
Model/ Serial No.： ST-CT140
to which this declaration applies, complies with these normative documents:
Machinery Directive: 2006/42/EC
and conforms to the following EN standard,
EN ISO 12100: 2010
EN ISO 11148-7:2012
Name and Signature/Position Date and Place
2020/12/14
Mike Su – Managing Director Taipei, Taiwan
ST-CT140-D-2012A-D5F

ST-CT140-I-2012A-D5
Foreword
Sumake is a manufacturer and exporter of air
tools since established. We have devote all our
efforts in improving quality and tools?life. As
well as the noise and vibration of tools. Bring all
of you working efficiences, profits, and enjoy
using the tool is our principle.
Features
This tool is designed to meet an extremely wide
range of metal materials to be cut into any shape,
straight side or curved side.
1. Main Applications
A breakthrough in cutting speed and durability.
This lightweight, fast cutting tool is ideally suited
for body shop and sheet metal work. Leaves sheet
metal smooth and free from burrs and distortion.
.
2. Cautions for Use
2-1 Air pressure
Maximum performance is displayed at the proper
sanding speed, obtainable at a gauge pressure of
6.2 bar. Range-wise, this is an air pressure from 5
to 7 bar (70 to 100psi)
57
2-2 Air line
Use a 3/8?air hose between the compressor and
the tool . Compressed air is cooled and its water
content separated, as soon as the air leaves the
compressor.
Tool
Nipple
Coupler Recoil
hose
Leader
hose
Oiler Regulator
Water
separation Air supply
Drain
daily
A portion of the water content, however, is
condensed in the piping, and can enter the tool
mechanism, and may cause trouble. So, install an
air filter and on oiler between the compressor and
the tool. Use a 3 HP or larger compressor for
each sander.
2-3 Air hose
Clean the hose with a blast of compressed air
before connecting the hose to air tool. This will
prevent both moisture and dust within the hose
from entering the tool and causing possible rust
or malfunction. To compensate for unusually
long hose (over 25 ft), the line pressure should be
increased accordingly.
Drainage
2-4 The approved eye protector, ear-muff,
mouth-muffle, and gloves should be worn when
operate this tool.
2-5 The working place shall beventilative.
2-6 Release the on-off device in the case of
energysupply failure.
3. Operation, Adjusting And Replacing
Method
3.1 On-off device
To operate this tool, just push the lever toward
the tool itself. The tool continuously reciprocates
as one push the lever down and it stops running
as the lever is released.
For the sake of safety, put it on hanger or on a
soft flat pad when not in use.
3.2 Replace and adjusting
There is no user serviceable part inside this tool.
Please send the tool toa qualified personnel or our
service section to repair or/and replace worn parts.
4. Maintenance
4-1 Lubrication
Before connecting thehose , apply 4 or 5 drops of
#60 spindle oil at the air inlet. Use of a thicker oil
can lead to reduced performance or malfunction.
If a thicker oil is used by accident, wipe it away
immediately. Also, every 3 or 4 hours of
operation, oiling is necessary.
4-2 Storage
Avoid storing the tool in a location subject to high
humidity. If the tool is left as it is used , the
residual moisture inside the tool can cause rust.
Before storing and after operation, oil the tool at
the air inlet with spindle oil and run it for a short
time.
4-3 Disposal
If the tool is too seriously damaged to be used
anymore, drop it in a resource recycling can.
Never drop it into fire.
4-4 Ordering service Parts
For further operational and handling information
or for replacement of parts and components,
contact the sale agent from whom you purchased
the tool or the service division of our company.
*In ordering parts and components, give each
part number, name and quantity.
Warning
1. This tool is not insulted for coming into contact
with electric power source.
2. It is forbidden to use this tool in explosive
atmospheres and do not put any combustible
material near the workpiece since it emit sparks
when grind with metal material.
3. The metal cutting trash might be sharp and it is
blew out from the under part of Dies.
4. Prevent long hair or loose clothing from
drawing in while operate this tool.
5. Never carry the tool by hose and beware of a
whipping compressed air hose.
6. The workpiece shall be fixed by proper device.
7. Keep your body balance and beware of the fall
of the severedworkpiece.

ST-CT140
PARTS LIST
No. Parts No. Description Q'ty No. Parts No. Description Q'ty
1 CT140-01 Pan Head Screw 1 29 CT140-29 Spacer 1
2 CT140-02 Washer 1 30 CT140-30 Ball Bearing 1
3 CT140-03 Washer 1 31 CT140-31 Front End Plate 1
4 CT140-04 Guide Plug 1 32 CT140-32 Spring Pin 3
5 CT140-05 Head Cap Screw 1 33 CT140-33 Spacer 1
6 CT140-06 Cap Screw 1 34 CT140-34 Rotor Blade 4
7 CT140-07 Saw Blade 1 35 CT140-35 Rotor 1
8 CT140-08 Holder Flange 1 36 CT140-36 Cylinder 1
9 CT140-09 Ball Bearing 1 37 CT140-37 Rear End Plate 1
10 CT140-10 Bevel Gear 2 38 CT140-38 Ball Bearing 1
11 CT140-11 Pin (Φ3x6) 239 CT140-39 Bearing 2
12 CT140-12 Driven Gear Shaft 1 40 CT140-40 Spacer Collar 1
13 CT140-13 Bevel Gear Casing 1 41 DG1002L-41 Housing 1
14 CT140-14 Ball Bearing 1 42A DG1002L-42A Muffler 1
15 CT140-15 External Stop Ring 1 43 DG1002L-43 O-Ring (S022.4) 1
16 CT140-16 Cover 1 44 DG1002L-44 Exhaust Sleeve 1
17 DG1002L-17 Spring Pin (Φ2.5x20) 145 DG1002L-45 Inlet Bushing 1
18 DG1002L-18 Valve Screw 1 46 DG1002L-46 Housing Cover 1
19 DG1002L-19 O-Ring (ID9.8x2.4) 1 47 CT140-47 Main Shaft 1
20 DG1002L-20 Valve Spring 1 48 CT140-48 Pin 6
21 DG1002L-21 Throttle Valve 1 49 CT140-49 Idle Gear 6
22 DG1002L-22 O-Ring (P4) 1 50 CT140-50 Internal Gear 1
23 DG1002L-23 Valve Shaft 1 51 CT140-51 Bearing Support 1
24 DG1002L-24 Throttle Lever Assy 1 52 CT140-52 Coupling Nut 1
25 DG1002L-25 Spring Pin (M3x18) 1 53 CT140-53 Internal Stop Ring 1
26 CT140-26 Ball Bearing (6001Z) 1 54 CT140-54 Hex. Wrench (4.0mm) 2
27 CT140-27 Drive Shaft 1 55 CT140-55 Hex. Wrench (5.0mm) 1
28 CT140-28 Internal Gear 1
ST-CT140-P-2303B-D5
2" AIR CIRCULAR SAW W/72T SAW BLADE

CUTTER(SAW)
Original instructions
SUMAKE Industrial Co. Ltd.

1
Read all these safety instructions before operating this product and save these instructions.
The tool has been manufactured in conformity with the instruction of EU machine directive. The EU mark will be considered void in the event
of inexpert repairs, the use of non-original parts and in case of non-observance of the safety instructions in the user’s manual.
Possible direct or indirect consequential damages are not the responsibility of SUMAKE Industrial co., Ltd.
General safety rules:
1. Watch the tool at all times when in use.
2. People under the influence of alcohol or drugs are not allowed to use, repair or maintain the tool.
3. Keep unqualified persons, children, etc. away from the tool.
4. Keep work area clean and with sufficient daylight or artificial lighting. The work area on which the machine is used must be cleaned up.
Disorder is a potential cause of accidents.
5. Danger of explosion. Never use oxygen and combustible gas as an air supply for the tool which many be ignited by spark and cause fire
or explosion.
6. Never use gasoline or other flammable liquids to clean the tool.
7. Do not use air tools in potentially explosive atmospheres such as in the presence of flammable liquids, cleaning solvents, fluid energy or
stored gases.
8. Do not expose air tools to rain. Do not use air tools in damp or wet locations.
9. When a fault or failure is detected, the tool must immediately be disconnected from the air supply and returned for repair.
10. It is not permitted to modify the tool in any way.
11. When not in use, keep tools in a dry place, either locked up or in a high place, out of the reach of children.
12. Do not force small air tools to do the job of a heavy –duty task. Do not use air tool for purpose of which was not intended.
13. Wear suitable ear protection at environment noise level >80dB(A) and safety spectacles when using the tool. Always wear approved
safety goggles if work in dusty. This also applies to other persons in the nearby vicinity.
14. Do not wear loose clothing or jewelry. They can be caught in moving parts. Rubber gloves and non-skid foot wear are recommended
when working outdoors. Wear protective hair covering to contain long hair.
15. Keep proper footing and balance at all times.
16. Use clamps or a vice to hold work-piece. It is safer than using your hand and free both hands to operate the air tool.
17. When not use, before performing service or changing accessories, please disconnect tool from air compressor.
18. Do not carry plugged in air tool with your finger on the switch trigger. Be sure switch is in the “OFF” position when connecting to air
supply.
19. Watch what you are doing. Use common sense, even unsafe situation or unbalanced positions, particularly when you are tired.
20. Air powered tools can vibrate in use. Vibration, repetitive motions or uncomfortable positions may be harmful to your hands or arms.
Stop using any tool if discomfort, tingling feeling or pain occurs. Seek medical advice before resuming use.
21. Multiple hazards. Read and understand the safety instructions before installing, operating, repairing, maintaining, changing accessories
on, or working near the tool.
22. Failure to do so can result in serious bodily injury.
23. Only qualified and trained operators should install, adjust or use the tool.
24. Do not modify the tool. Modifications may reduce the effectiveness of safety measures and increase the risks to the operator.
25. Do not discard the safety instructions –Give them to the operator.
26. Warnings shall be given against the risk of explosion or fire due to the material being processed;
27. Do not use the tool if it has been damaged
28. Tools shall be inspected periodically to verify the ratings and markings required by this document are legibly marked on the tool. The
employer/user shall contact the manufacturer to obtain replacement marking labels when necessary.
Safety precautions for projectile hazards
1. Failure of the work piece, or accessories, or even of the inserted tool itself may generate high velocity projectiles.
2. Always wear impact-resistant eye protection during the operation of the tool. The grade of protection required should be assessed for
each use.
3. Ensure that the work piece is securely fixed.
Safety precautions for entanglement hazards
1. Entanglement hazard - choking, scalping and/or lacerations can occur if loose clothing, personal jewellery, neck ware, hair or gloves are
not kept away from tool and accessories.
Safety precautions for operating hazards
1. Use of the tool may expose the operator’s hands to hazards including cuts and abrasions and heat. Wear suitable gloves to protect
hands.
2. Operators and maintenance personnel must be physically able to handle the bulk, weight and power of the tool.
3. Hold the tool correctly: be ready to counteract normal or sudden movements –have both hands available.
4. Maintain a balanced body position and secure footing.
5. Warnings against the break-through when the tool bit passes through the material being cut
6. Release the start and stop device in the case of an interruption of the energy supply
7. Use only lubricants recommended by the manufacturer
8. Personal protective safety glasses shall be used, suitable gloves and protective clothing are recommended.
Safety precautions for repetitive motions hazards
1. When using the tool to perform work-related activities, the operator may experience discomfort in the hands, arms, shoulders, neck, or

2
other parts of the body.
2. While using the tool, the operator should adopt a comfortable posture whilst maintaining secure footing and avoiding awkward or
off-balanced postures. The operator should change posture during extended tasks which may help avoid discomfort and fatigue.
3. If the operator experiences symptoms such as persistent or recurring discomfort, pain, throbbing, aching, tingling, numbness, burning
sensation, or stiffness, these warnings should not be ignored. The operator should tell the employer and consult a qualified health
professional.
Safety precautions for accessory hazards
1. Disconnect the tool from the energy supply before fitting or changing the inserted tool or accessory.
2. Only use sizes and types of accessories and consumables that are recommended by the tool manufacturer.
3. Avoid direct contact with the inserted tool during and after use as it can be hot or sharp.
Safety precautions for workplace hazards
1. Slips, trips and falls are major causes of workplace injury. Be aware of slippery surfaces caused by use of the tool and also of trip hazards
caused by the air line or hydraulic hose.
2. Proceed with care in unfamiliar surroundings. Hidden hazards may exist, such as electricity or other utility lines.
3. The tool is not intended for use in potentially explosive atmospheres and is not insulated from coming into contact with electric power.
4. Make sure there are no electrical cables, gas pipes etc. that could cause a hazard if damaged by use of the tool.
Safety precautions for dust and fume hazards
1. Dusts and fumes generated when using the tool can cause ill health (for example: cancer, birth defects, asthma and/or dermatitis); risk
assessment of these hazards and implementation of appropriate controls of is essential.
2. Risk assessment should include dust created by the use of the tool and the potential for disturbing existing dust.
3. Operate and maintain the tool as recommended in these instructions, to minimise dust or fume emissions
4. Direct the exhaust so as to minimise disturbance of dust in a dust filled environment
5. Where dusts or fumes are created, the priority shall be to control them at the point of emission.
6. All integral features or accessories for the collection, extraction or suppression of airborne dust or fumes should be correctly used and
maintained in accordance with the manufacturer’s instructions.
7. Select, maintain and replace the consumable/inserted tool as recommended in these instructions, to prevent an unnecessary increase in
dust or fumes.
8. Use respiratory protection as instructed by your employer and as required by occupational health and safety regulations.
Safety precautions for noise hazards
1. Unprotected exposure to high noise levels can cause permanent, disabling, hearing loss and other problems such as tinnitus (ringing,
buzzing, whistling or humming in the ears);
2. Risk assessment of these hazards and implementation of appropriate controls of is essential.
3. Appropriate controls to reduce the risk may include actions such as damping materials to prevent workpieces from ‘ringing’
4. Use hearing protection as instructed by your employer and as required by occupational health and safety regulations;
5. Operate and maintain the circular, oscillating or reciprocating saw as recommended in these instructions, to prevent an unnecessary
increase in noise levels
6. Select, maintain and replace the consumable/inserted tool as recommended in these instructions, to prevent an unnecessary increase in
noise
7. If the tool has a silencer, always ensure it is in place and in good working order when the tool is operating;
Safety precautions for vibration hazards
1. Exposure to vibration can cause disabling damage to the nerves and blood supply of the hands and arms.
2. Wear warm clothing when working in cold conditions and keep your hands warm and dry;
3. If you experience numbness, tingling, pain or whitening of the skin in your fingers or hands, stop using the circular, oscillating or
reciprocating saw, tell your employer and consult a physician.
4. Operate and maintain the tool as recommended in these instructions, to prevent an unnecessary increase in vibration levels.
5. Select, maintain and replace the consumable/inserted tool as recommended in these instructions, to prevent an unnecessary increase in
vibration levels.
6. Support the weight of the tool in a stand, tensioner or balancer if possible.
7. Hold the tool with a light, but safe, grip taking account of the required hand reaction forces, because the risk from vibration is generally
greater when the grip force is higher.
Additional safety instructions for pneumatic power tools
1. Air under pressure can cause severe injury.
2. Always shut off air supply, drain hose of air pressure and disconnect tool from air supply when not in use, before changing accessories or
when making repairs.
3. Never direct air at yourself or anyone else.
4. Whipping hoses can cause severe injury. Always check for damaged or loose hoses and fittings.
5. Whenever universal twist couplings (claw couplings) are used, lock pins shall be installed and whipcheck safety cables shall be used to
safeguard against possible hose-to-tool and hose-and-hose connection failure.
6. Do not exceed the maximum air pressure stated on the tool.
7. Never carry an air tool by the hose.
Specific safety instructions
Warnings shall be given about any specific or unusual hazards associated with the use of the tool. Such warnings shall indicate the nature of

3
the hazard, the risk of injury and the avoidance action to take.
General preparation and connection:
1. Before connecting the air hose, apply 4 to 5 drops of SAE#10-20 spindle oil at the air inlet. Also, every 3 to 4 hours of operation, oiling is
necessary. Twist Teflon thread tape to ensure a proper seal air inlet. Then tighten the air coupler into air tool.
2. The supplied compressed air must be clean and dry, with the appropriate oil mist. Use an air treatment unit; filter, regulator and
lubricator.
3. Please refer Fig.1 illustration shows the correct mode of connection to the air supply system which will increase the efficiency and useful
life of the tool.
4. The quick connect coupling and hose must have sufficient air flow capacity. We recommend an air hose with a diameter of 10mm (3/8”).
5. To ensure a good performance. The operation pressure at the compressed air inlet should not exceed 6.3bar (90psi) (unless indicated
otherwise). Higher operating pressures may cause damaged or excessive wear. Operating pressures below 5.3bar may cause pressure
or power loss.
Risk of injury
1. Compressed air can inflict serious injuries. Therefore never point the air hose at another person or yourself.
2. Shut –off the air supply and disconnect the tool in case:
➢You want to change or replace accessories.
➢You want to clean, repair or maintain the tool.
➢The tool is not going to use for some times.
3. Check compressed air hose before use. If it is damaged, broken, torn, or deformed, the hose is not to be connected to the tool.
4. Always check the pneumatic couplings before using the tool. If they show signs of damage, fracture, cracking or excessive corrosion,
the respective tool or the air hose is not to be used.
5. Use only qualified adapters and connectors, In case of wear they are to be replaced immediately.
6. Only use air pipes that are fit for the use at maximum pressure.
Maintenance instruction:
1. Dry the filter (fig1) and the air inlet of the tool.
2. Lubricate the quick connect coupling to prevent blocking.
3. Air tool require lubrication throughout the life of the tool. The air motor and bearing uses compressed air to start the tool. The moisture in
compressed air will rust the air motor; you must lubricate the motor daily.
4. Avoid storing the tool in a location subject to high humidity. If the tool is left as it is used, the residual moisture inside the tool can cause
rust.
5. Before storage, lubricate tool and run it for a few seconds.
6. Regular inspection of spindles, threads, and clamping devices in respect of wear and tolerances for location of abrasive products.
7. If the tool is too seriously damage to be used anymore, recycle raw material instead of disposing as waste. The machine, accessories
and packaging should be sorted for environmental-friendly recycling. Check with your local authority or retailer for recycling advice.
CUTTER(SAW)-I-201304A