HK-12 Beetle portable gas cutter

INSTRUCTION
Thank you very much for purchasing this product. Read this instruction manual
thoroughly to insure correct, safe and effective use of the machine. Read the manual first
to understand how to operate and maintain the machine.
Make sure you read, understand and take all the necessary safety precautions.

SAFETY PRECAUTIONS
This product is designed to be safe, but it can cause serious accidents if not operated
correctly. Those who operate and repair this machine must read this manual thoroughly
before operating, inspecting and maintaining the machine. Keep the manual near the
machine so that anyone who operates the machine can refer to it if necessary.
■Do not use the machine carelessly without following the instructions in manual.
■Use the machine only after you completely understood the contents of the manual.
■If an explanation in the manual is difficult to understand, contact our company of sales
service office.
■Keep the manual nearby at all times and read it so many times as necessary for a
complete understanding.
■If the manual become lost or damaged, place an order with our company or sales service
office for a new one.
■When transferring the machine to a new owner, be sure to hand over this instruction
manual as well.

QUALIFICATIONS FOR MACHINE OPERATOR

Operators and repair staff of this machine must completely understand the contents of
the instruction manual and they must be qualified and educated to handle this
equipment.
1. The license for gas welding ganger
2. The diploma of the training course on gas welding.
3. The qualification certificate approbated by the ministry of labor.

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 HK-12 Beetle portable gas cutter

Symbol Title Meaning

General General caution, warning and danger

Be careful not to get your Possible injury to fingers if caught in the

fingers caught. insertion part.

Possible electric shock under special

Caution: Electric shock!
conditions.

Operators must ground the equipment using

Ground this equipment.
the safety grounding terminal.

Operators must unplug the power plug from

Pull out the power plug
the outlet when a failure occurs or when
from the outlet.
there is a danger of lightning.

Caution against bursting Possible bursting under certain conditions.

General General warning.

Possible injury due to high temperature

Caution: Hot！
under certain conditions.

Caution: Ignition! Possible ignition under certain conditions.

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 HK-12 Beetle portable gas cutter

CONTENTS

1 Safety instruction .................................................................................................................... 1

1.1 General machine safety precautions ............................................................................ 1
1.2 Notice instruction before the operation of air cut. ....................................................... 2
2 Location of safety labels ........................................................................................................ 4
3 Outline of machine ................................................................................................................. 5
3.1 Features of machine ....................................................................................................... 5
3.2 Name and function of each section .............................................................................. 5
3.3 Specifications ................................................................................................................... 6
4 Preparation for operation ...................................................................................................... 6
4.1 Contents of package ....................................................................................................... 6
4.2 Machine assembly ........................................................................................................... 7
4.3 Preparation for operation................................................................................................ 7
5 Cutting operation .................................................................................................................... 8
5.1 Safety measures prior to operation .............................................................................. 8
5.2 Ignitions and flame adjustment...................................................................................... 8
5.3 Cutting and piercing method .......................................................................................... 9
5.4 Procedures for starting cutting operation and extinguishing the flame ................... 9
5.5 Safety measures against backfire and flashback ....................................................... 9
5.6 Cutting operation ........................................................................................................... 10
5.7 Set up circle cutting attachment .................................................................................. 10
5.8 Circle rail ......................................................................................................................... 10
6 Maintenance and inspection ............................................................................................... 11
6.1 Daily inspection .............................................................................................................. 11
6.2 Monthly inspection ......................................................................................................... 11
6.3 3-month (2000-hour) inspection .................................................................................. 11
7 Troubleshooting .................................................................................................................... 11
8 Wiring diagram ...................................................................................................................... 13
9 Assembly drawing ................................................................................................................ 13
10 Parts list ............................................................................................................................... 14
11 Cutting data ......................................................................................................................... 17
12 Maintenance illustration .................................................................................................... 19

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 HK-12 Beetle portable gas cutter

1 Safety instruction
Operation, inspection, and maintenance that disregard the basic safety rules cause many accidents.
Carefully read, understand, and master the safety measures and precautions described in this instruction
manual and on the machine before operating, inspecting, and maintaining the machine. The safety
messages are classified as indicated on the machine safety labels:

■WARNING
This word is used in a warning message and a warning label is positioned at places that could cause injury
or serious accident.

■CAUTION
This word is used in a caution message and a caution label is positioned at places that could cause slight
injury or machine damage. This is also used as a caution for frequent dangerous actions.

■NOTICE SIGNS
This is a sign to show machine operators and maintenance engineers items that relate directly to damage
of machines and surrounding facilities and equipment.

1.1 General machine safety precautions

Read and understand the following important safety information:
1.1.1 Machine safety
1. The machine casing is mainly made of aluminum alloy to reduce weight. For this reason, be careful
not to drop a heavy item on the machine, or not drop the machine when carrying it , since the alloy
is not designed to withstand such impact.
2. When mounting hoses to the torch and distributor, tighten the nut with the attached wrench. After
mounting, be sure to check there is no gas leak with a detection liquid. If a gas leak is found,
retighten the nut firmly.
3. When fixing a tip to the torch, tighten the nut with the two wrenches attached. In addition, avoid
damaging the taper part of the tip since this may cause backfire.
4. Never disassemble the machine other than during maintenance and inspection. Otherwise,
malfunction will result.
5. Never remodel the machine. Remodeling is very dangerous.
6. Always turn the power off when not in use.
7. Never use the machine outdoors when the weather is wet. This will cause failure of the machine and
could cause a fatal accident by electric shock.
1.1.2 Safety clothing
1. Be sure to wear protector’s gauntlets, goggles, helmet, and safety shoes during operation.
2. Avoid operating the machine with wet clothes or hands in order to prevent electric shock.
1.1.3 Operation and handling safety precautions
1. Read this instruction manual before operating the machine.
2. Mount and center the machine correctly and confirm correct motion before operation.
3. Before connecting the power plug to the outlet, make sure that the power switch is in the OFF
position (or the normal/reverse changeover switch is in the stop position).
4. Prior to operating the machine, check the safety of the surroundings to avoid accidents.

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5. Never move the machine while the preheat flame is on.

6. Take great care of spatters and dross when operating the machine at a high position. They may
injure people below.
7. Clutch
Before running the machine, check to be sure the clutch is in. If the machine runs keeping the clutch
by halves, troubles will arise for this reason.
8. When joint the rails, be careful not to catch your hands befit the direction after the machine is
stopped.
9. When joint the rails, be careful not to catch your hands befit the direction after the machine is
stopped.
10. Heat shield should be fixed firmly so that it may not contact
the rails.
11. secure the rack bar with the wing bolt(M6×20)attached to the
torch slide liner to prevent the rack bar from dropping.
12. Be sure to hold the handle when carrying the machine.
22. When moving the rail, be sure to take down the machine body
off the rails.

1.1.4 Electrical system precautions

1. Be sure to check the input power voltage of the machine before operation. The input power voltage
should be in the range of ±10％ of the rated voltage. The machine should not be operated out of this
range.
2. The metal plugs are screw-threaded, therefore, fully tighten them so that they will not come loose
during operation.
3. Be sure to ground the power cable of the machine.
4. Stop operation and turn off the power in the following cases, and ask a qualified electrician to repair
the machine.
1) Broken or abraded cables
2) When the machine has been in contact with water, or in case of liquid damage to the machine.
3) Abnormal machine operation despite operating the machine according to the instruction manual
4) Machine breakdown
5) Poor machine performance the requires repair
5. Periodically inspect the electrical system.

1.1.5 Maintenance and inspection precautions

1. Ask a qualified electrician to perform repair and inspection service.
2. Disconnect the power plug before inspecting and repair the machine.
3. Maintain the machine periodically.

1.2 Notice instruction before the operation of air cut.

Strictly observe the safety rules and precautions to ensure the safety of gas cutting operations.
Operators and supervisors MUST keep safety in mind.

1.2.1 Prevention of explosion

1. Never cut pressurized cylinders or hermetically sealed containers.

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2. Ensure sufficient ventilation for gas cutting to prevent the air from becoming stale.

1.2.2 Pressure regulator safety precautions

1. Before starting operation, check that all pressure regulators are operating correctly.
2. Ask a skilled repair engineer to perform maintenance and inspection service.
3. Do not use pressure regulators from which gas is leaking, or malfunctioning pressure regulators.
4. Do not use pressure regulators smeared with oil or grease.

1.2.3 High pressure gas cylinder safety precautions

1. Never use broken cylinders or cylinders from which gas is leaking.
2. Install cylinder upright and take measures to prevent them from falling.
3. Use cylinders only for specified purposes.
4. Do not smear container valves with oil or grease.
5. Install cylinders in a place free from heat, sparks, slag, and open flame.
6. Contact the distributor if the container valves will not open.
Never use a hammer, wrench, or other tools to forcibly open container valves.

1.2.4 Safety precaution for hoses

1. Use the oxygen hose for oxygen gas only.
2. Replace cracked hoses or other hoses damaged by sparks, heat, unshielded fire, etc.
3. Install hoses without twisting.
4. To prevent breakage of hoses, take great care during operation and transportation.
5. Do not hold the hoses when moving the machine.
6. Periodically check the hoses for damage, leakage, fatigue, loose joints, etc, to ensure safety.
7. Cut hoses to the minimum possible length. Short hoses reduce hose damage and pressure drop, as well
as reduce the flow resistances.

1.2.5 Safety precautions for fire

Take safety precautions to prevent fire prior to gas cutting.
Ignoring hot metal, sparks, and slag could cause a fire.
1. Keep a fire extinguisher, fire extinguish sand, bucket full of water, etc. ready on the site where gas cutting
is performed.
2. Keep flammables away from the cutting area to avoid exposure to sparks.
3. Always cool down steel plates that have become hot after cutting, as well as hot cut parts or scrap,
before bringing them close to flammables.
4. Never cut containers to which flammable materials are stuck.

1.2.6 Safety precautions for skin burns

Observe the safety precautions to prevent skin burns. Ignoring heat, spatter, and sparks during operation
could cause a fire or burned skin.
1. Do not perform cutting near flammables. (Move flammables well away from the sparks.)
2. Do not cut containers filled with flammables.
3. Do not keep lighters, matches, and other flammables nearby.
4. Flames from the torch will burn the skin. Keep your body away from the torch and tip, and check the

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safety before operating the switches and valves.

5. Wear the correct protectors to protect your eyes and body.
6. Correctly tighten the tip to prevent backfire.
●When fixing a tip to the torch, tighten the nut with the two wrenches attached.
●If the tip is tighten excessively, it will be heated during cutting and tightened still more, making it difficult
to remove the tip.
●Avoid damaging the taper of the tip since this may cause backfire.
7. Check with soapsuds for any leakage of gas from the connection part of the distributor, hoses and torch.
Never use oil or grease on the connection of the oxygen pipe to avoid backfire which may lead to explosion.
8. Be sure to check the following when igniting.
● Place the torch on the torch holder before igniting.
● Always wear the required protectors (gauntlets, goggles, helmet, etc.)
● Check for any obstacles, dangerous materials and flammables near or in the direction of cutting.
Determine the gas pressure.
● The gas pressure must be within the appropriate range, (For the gas pressure , refer to the cutting data.)
9. The torch, tip ,and heat shield are heated to a very high temperature. Always wear gauntlits when
handing them. Also, the surface after cutting is very hot so do not torch it even while wearing gauntlets.
10. Never move the machine while the preheat flame is on.

2 Location of safety labels

Safety labels and other labels for correct operation are affixed to the machine.
Carefully read the labels and follow the instructions on them when operating the machine.
Never remove the labels. Keep them clean and legible at all times.

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 HK-12 Beetle portable gas cutter

3 Outline of machine
3.1 Features of machine
This machine is equipped with a single cone speed changer (mechanical non-stage speed changer)to
materialize substantial compactness and lightweight based on the double cone speed changer that has
been successfully used in HK-12MAX, The improved transportability and operability will surely contribute to
rationalization and labor-saving of cutting operation.

3.2 Name and function of each section

1. Electric outlet: Used for connection of power cable to supply electric power.
2. Speed adjuster: Turn the knob clockwise, and the machine will travel faster.
3. Clutch: The lever operation will stop driving.
4. Drive wheel: Incline the switch in the direction of the arrow to move the machine in that
direction.
5. Drive wheel: Engage the clutch (ON) to transmit driving power, and the machine will begin
to travel.
6. Torch side handle: This handle adjusts the lateral position of the torch.
7. Handle: Hold the handle to carry the machine. As well as for positioning.
8. Heat shield: The shield protects the machine form the heating flame.
9. Idle wheel

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3.3 Specifications
1. Weight: 7.5kg
2.One torch with body: 10kg
3.Two torch with body: 14kg
4. Machine size: 350×140×175mm
5.Wheel distance: 160mm
6.Power source: 110±10%
7.Reduction gear: Single cone system
8. Cutting edge sharp: I、V (45°)
9.Cutting thickness: 6~100mm( by standard accessories)
10.Moter: 1500r.p.m
Accessories
Cabtyrecode: 1set
Tip: G02( for acetylene ) or G03(for propane) #0、1、2、one each
Weigh: 1Pc (two torch set only)
Weigh supporter: 1PC (two torch set only)
Fitting: 1PC (two torch set only)
Option
Rail: 1.8m, 2.5m, 3.0m
Circle cutting attachment:

4 Preparation for operation

4.1 Contents of package
The contents of the standard package are shown below. Check them carefully before
assembling the machine.
1. One torch set
Main unit………………………………………………1set
Torch holder with rack……………………………1set
Torch ………………………………………………………1pc
Gas distributor …………………………………………1pc
Hose 600mm ……………………………………………2pcs
Cabtyre cord, 5m ………………………………………1pc
Tip (G02or G03 type#0,1,2,one each) …………3pcs

2. Two torch set

Main unit ……………………………………………………1set
Torch holder ………………………………………………3set
Torch ……………………………………………………………2pcs
Gas distributor ………………………………………………1pc

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Weight ……………………………………………………………1pc
Weight supporter ……………………………………………1pc
Fitting ………………………………………………………………1pc
Hose, 600mm(2pcs) and 900mm(2pcs) ……………4pcs
Cabtyre cord, 5m ………………………………………………4pcs
Tip (G02 or G03 type #0,1,2, two each) …………………6pcs
4.2 Machine assembly
1. Take out the machine gently form the case and place it on the rail.
2. Assemble the torch set parts in advance in the following order.
4.2.1 One torch set
1. Insert the rack bar into the main unit in the
direction of the arrow.
2. Fit the torch holder onto the rack bar.
3. Fit the torch into the torch holder and
adjust the torch up/down setting.
4. Fit the hoses between the torch and
distributor connection. (The blue hose has
a right-hand thread, and the red hose a
left-hand thread.)
5. When the torch stroke is insufficient to cut the plate beneath the rail when carrying
out lower-edgw preparation, change the torch holder to the position indicated by the
arrow.
4.2.2 Two torch set
1. Insert the rack bar into the main unit in the direction of the arrow.
2. Fit the two cross-feed torch holders onto the rack-bar.
3. Position and fix the torch holders in the cross-feed holders, then fit the torches.
4. Fit the distributor section onto the main unit and connect the 600mm and 900mm
hoses form the distributor to the two torches.
5. Fix bracket, weight bar and weight, in that order.
4.3 Preparation for operation
4.3.1 Connecting the power cable
1. Connect the power cable to the body.
2. Before plugging the metal plug on the cab tire cord side into the socket on the machine
side, check there is no dust inside.
3. The metal plugs are screw-threaded; therefore, fully tighten them so that they will not
come loose during operation.
4.3.2 Connecting the gas supply hose
1. Connect the respective gas supply hoses to the primary hose.
2. Securely tighten the joints and check there is on gas leak.
4.3.3 Connecting the tip

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1. Select a proper tip according to the thickness of the steel plate and attach it to the torch.
(To select a tip to the torch, refer to the table of cutting data.)
⚫ When fixing a tip to the torch, tighten the nut with the two wrenches attached.
⚫ If the tip is tightened excessively, it will be heated during cutting and tightened still more,
making it difficult to remove the tip.
⚫ In addition, avoid damaging the taper of the tip since this may cause backfire.

5 Cutting operation
5.1 Safety measures prior to operation
5.1.1 Grounding the machine
The cable of this machine is equipped
with a grounding wire. For safety, be sure
to ground the wire as follows, in addition
to checking the connection of the power
cable.
Method to ground the machine
⚫ The simplest way of grounding
the wire is to connect the clip to
the steel frame as shown in the
diagram.
⚫ If a grounding wire is already
provided at the site, connect the
clip to the wire.
5.1.2 Selection of tip
Referring to the cutting data, select the suitable tip according to the plate thickness. For a
heavily rusted plate or for a bevel cutting angle or more than 20°,select the tip one grade
higher than the one shown in the cutting data.

5.1.3 Operation of running direction changeover switch

⚫ By changing the direction switch, the machine can move forward and backward. The
neutral position on the switch is the stop position of the machine.
⚫ When changing the direction, make sure that the direction switch is in the neutral (stop)
position, and operate the direction switch after the machine has stopped.
⚫ Be sure that the switch is in the neutral position before starting the machine.
⚫ Make sure that the switch is in the neutral position before turning the power on. If the
switch is in the forward or backward position, the machine will start as soon as the power
is turned on, which could cause serious accidents.
Never put your hands in the space between the guide roller and rail, while the machine is
running, otherwise, your hands may be caught.
5.2 Ignitions and flame adjustment
Adjust the gas pressure according to the cutting data. The data shows the pressure when all
the valves are open. Readjust the pressure after ignition. (see page26.)

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Flame adjustment method

1. Open the fuel gas valve 1/40 to 1/2 a turn, and light the torch with an igniter.
2. Then, open the preheating oxygen valve gradually until a white cone of the standard
flame has been obtained. (The incandescent area should be uniform and about 5~6
mm (3/16-1/14”) in length.)
3. Open the jet oxygen valve fully. Readjust the flame if its condition has changed. A
disorderly flow of the jet oxygen will adversely affect the quality of the cutting surface.
In such a case, clean the tip with a suitable cleaning needle while the jet oxygen is
flowing.
4. Appropriate distance between the tip end and cutting surface:
Acetylene gas ………………8~10mm
LPG gas………………………5~8mm
5.3 Cutting and piercing method
1. Cut in from the end of steel plate.
2. Pierce steel plate before cutting.
3. Drill a hole before cutting.
Piercing method
1) Lignite and adjust the flame.
2) Thoroughly preheat the cut-in point until it is white hot.
3) Open the cutting oxygen valve to pierce the steel plate. The tip should be about
15~20mm from the plate to prevent slag from splashing onto the top and adhering
there, which will shorten the working life of the tip.
5.4 Procedures for starting cutting operation and extinguishing the flame
1. Align the tip with the cutting start point, ignite, and then adjust the flame.
2. Sufficiently preheat the cutting start point.
3. After preheating, supply oxygen and simultaneously turn on the motor switch or the
turning direction switch to start cutting.
4. Carefully check the cutting condition, and control the cutting speed with the speed
adjuster. For the cutting speed, refer to the cutting data.
5. Extinguish the flame after cutting as follows:
1) Turn off the motor switch (or turning direction switch).
2) Close the cutting oxygen valve.
3) Close the preheating oxygen valve.
4) Close the fuel gas valve.
5.5 Safety measures against backfire and flashback

5.5.1 Prevention of backfire

Backfires may cause serious accidents or fires. Be careful to prevent such disaster. When a
backfire occurs, find the cause and inspect and maintain the machine correctly before using
the machine again.
The following are causes of backfire:
1) Improper gas causes of backfire.
2) Overheated tip.

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3) Slag clogged in tip.

4) Damage to the tapered section of the tip or torch will cause backfire.

5.5.2 Prevention of flashback

Flashback could cause fire and break the machine. Should there be a hissing sound in the
torch, quickly take the following.
Action:
1) Close the preheating oxygen valve.
2) Close the fuel gas valve.
3) Close the cutting oxygen valve.
Should flashback occur, find the cause and take appropriate action before using the
machine again.
5.6 Cutting operation
1. Attach the rail to the cutting position, and align the tip with the cutting start point.
2. Bring a flame close to the tip for ignition and ensure sufficient preheating.
3. Simultaneously with opening the cutting oxygen valve. Turn on the switch to start
cutting.
4. While checking the cutting condition, select the optimal cutting speed with the speed
adjuster.
5. After cutting, turn off the switch and close the cutting oxygen valve, fuel gas valve, fuel
gas valve, and preheating oxygen valve in this order.
★ Thereafter, repeat operations from step 1.
5.7 Set up circle cutting attachment
Option
1. Attach the respective parts, as shown in the
figure for cutting small and large circles.
2. Adjust the height of center by the pivot pin so
that the drive wheel of at the center side can be
floating by 1mm from the work piece.
3. Align the pivot pin with the center or the circle.
4. Fix the weight as close as possible to the pivot pin.
5. Loosen the butterfly bolt and idle wheel to an
angle suitable to the cutting radius.
5.8 Circle rail
Round rails are available upon request. For details,
contact the nearest sales office.

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 HK-12 Beetle portable gas cutter

6 Maintenance and inspection

Refer to the following for inspection and maintenance of the machine to use the machine
under the best operating conditions at all tiones.6.1 daily.
6.1 Daily inspection
1. Wipe the exterior of the machine with a clean cloth.
2. Oil the axles of casters as necessary.
3. Wipe the circumference of the driving wheel with a cloth impregnated with oil.
6.2 Monthly inspection
1. Oil the torch slide handle shaft and clutch lever shaft.
2. Measure insulation resistance in the following manner. Set the switch in the forward or
backward position, and measure the resistance between one end of the power receptacle
and the metallic part of the case. If the resistance is 5kΩor more, there is no problem.
3. Disconnect the operation panel, and remove dust from the electric equipment parts.
6.3 3-month (2000-hour) inspection
1. Remove the motor and speed change cone, and replace the old grease inside the gear box
with new grease.(Grease is available at our sales office.)
2. Replace the internal parts when they are substantially abraded.
3. Completely remove oil, if any form the motor disc and speed change cone of the speed
changer with thinner, etc.

7 Troubleshooting
1) Carriage does not move.(motor does not run.)

Possible case Procedure Remedy

1 No electrical Check power source and connections.

power
2 Broken power cord Use a circuit tester to check the cord. If the Repair or replace
tester shows, the power cord is broken. The broken cord.
3 Bad plug Check the wire soldering. Resolving the wire.
4 Bad switch Remove the mid terminal and test the Replace faulty
switch. switch.(see the wiring
diagram.)
5 Bad condenser Check the condenser with a tester. If the Replace faulty
tester handle slightly vibrates and shows condenser.
immediately, the condenser is normal.
6 Bad connection Check soldering. Resolving bad
connection.
7 Broken lead wire Test each lead with a tester. Replace faulty lead.
8 Bad motor A faulty motor is indicated if all the above Repair or replace the
windings test results are normal. motor.

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2）Carriage dies not move(Motor runs)

Possible case Procedure Remedy

1 Faulty clutch. Remove the clutch and check the Reconnect

inside mechanism.
2 Come friction slips Check the spring or greasy friction Replace the spring or clean
face. oily surface with thinner.

3）Abnormal carriage

Problem Possible cause Remedy

1 Servers vibration Foreign matter caught in gear. Repair or replace.

and noise Gear worn. Replace.
Motor faulty. Repair or replace.
Corn worn or damaged. Replace.
2 No disengaging Snap ring of the clutch pin is off. Replace.
3 Knocks Gear worn. Replace worn gears.
Faulty clutch pin. Replace faulty pin.
Clutch key worn. Repair or replace worn key
Loose shaft or drive wheel. Repair or replace.
Worn or damaged cone. Replace.
Heat shield touches to the work Exercise caution
surface or rail.
Damaged rail or foreign objects on Repair or clean.
rail
Hoses or cable interferes with Exercise caution during
carriage movement. operation.
Faulty idle wheel unit. Replace or repair.
Foreign matter attached to drive or Replace or repair.
idle wheel, or these wheels are
damaged.
Note: If the motor does not rotate even after having been repaired, check that
wiring is correct.

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 HK-12 Beetle portable gas cutter

8 Wiring diagram

9 Assembly drawing

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10 Parts list

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11 Cutting data
106 (STANDARD SPEED) For Propane
Metric System
PLATE TIP CUTTING OXYGEN PRESSURE FUEL GAS KERF
THICKNESS SIZE SPEED (Kg/cm2) PRESSURE WIDTH
(mm) (mm/min) CUTTING PR-HEAT (Kg/cm2) (mm)
3 00 680 1.5 1.5 0.2 1.0
6 0 610 2.0 2.0 0.2 1.3
10 0 560 2.0 2.0 0.2 1.5
12.5 1 530 2.5 2.5 0.2 1.8
19 2 460 3.0 3.0 0.25 2.0
25 2 430 3.0 3.0 0.25 2.0
38 3 355 3.0 3.0 0.25 2.3
50 4 320 3.0 3.0 0.25 2.8
60 5 280 4.0 4.0 0.3 3.0
75 5 250 4.0 4.0 0.3 3.0
100 6 200 4.0 4.0 0.3 3.6
125 6 180 4.0 4.0 0.4 3.6
150 7 150 4.5 4.5 0.4 4.1
200 7 130 4.5 4.5 0.4 4.3
250 8 80 4.5 4.5 0.4 5.6
300 8 50 4.5 4.5 0.4 5.6

Inch system
Plate Cutting KERF
Tip Oxygen P.S.I.G PUEL GAS
Thickness Speed WIDTH
Size P.S.I.G
(Inches) (in/min CUTTING PR-HEAT (Inches)
1/8 00 27 20 20 2.8 0.04
1/4 0 24 30 30 2.8 0.05
3/8 0 22 30 30 2.8 0.06
1/2 1 21 40 40 2.8 0.07
3/4 2 18 45 45 3.6 0.08
1 2 17 45 45 3.6 0.08
1-1/2 3 14 45 45 3.6 0.09
2 4 12.5 45 45 4.3 0.11
2-1/2 5 11 55 55 4.3 0.12
3 5 10 55 55 4.3 0.12
4 6 8 55 55 5.7 0.14
5 6 7 55 55 5.7 0.14
6 7 6 65 65 5.7 0.16
8 7 5 65 65 5.7 0.17
10 8 3 65 65 5.7 0.23
12 8 2 65 65 5.7 0.27

106(STANDARD SPEED) For Propane

Metric system
PLATE CUTTING OXYGEN PRESSURE FUEL GAS KERF
TIP
THICKNESS SPEED (Kg/cm2) PRESSURE WIDTH
SIZE
(mm) (mm/min CUTTING PR-HEAT (Kg/cm2) (mm)
3 00 800 7.0 1.5 0.2 0.8
6 0 740 7.0 2.0 0.2 1.0
10 0 680 7.0 2.0 0.2 1.3
12.5 1 630 7.0 2.5 0.2 1.3
19 2 560 7.0 3.0 0.25 1.5
25 2 510 7.0 3.0 0.25 1.8
38 3 460 7.0 3.0 0.25 2.0
50 4 410 7.0 3.0 0.25 2.6
60 5 360 7.0 4.0 0.3 2.8
75 5 320 7.0 4.0 0.3 2.5
100 6 250 7.0 4.0 0.3 3.3
125 6 230 7.0 4.0 0.4 3.6
150 7 180 7.0 4.5 0.4 3.6
200 7 140 7.0 4.5 0.4 4.6
250 8 100 7.0 4.5 0.4 5.1
300 8 80 7.0 4.5 0.4 6.1

Inch system
Plate Cutting KERF
Tip Oxygen P.S.I.G PUEL GAS
Thickness Speed WIDTH
Size P.S.I.G
(Inches) (in/min CUTTING PR-HEAT (Inches)
1/8 00 31.5 100 20 2.8 0.03
1/4 0 29 100 30 2.8 0.04
3/8 0 27 100 30 2.8 0.05
1/2 1 25 100 40 2.8 0.05
3/4 2 22 100 45 3.6 0.06
1 2 20 100 45 3.6 0.07
1-1/2 3 18 100 45 3.6 0.08
2 4 16 100 45 4.3 0.10
2-1/2 5 14 100 55 4.3 0.11
3 5 12.5 100 55 4.3 0.11
4 6 10 100 55 5.7 0.13
5 6 9 100 55 5.7 0.14
6 7 7 100 65 5.7 0.14
8 7 5.5 100 65 5.7 0.18
10 8 4 100 65 5.7 0.20
12 8 3 100 65 5.7 0.24

Note:
1) All pressures are torch inlet pressures.
2) Oxygen purity is minimum of 99.7%; Propane is minimum of JIS Grade3.
1) Depending on the surface condition of the steel plate (scale, paint), either increase the fuel gas pressure of decrease cutting speed. Also, when
precision cutting is required, adjust all data.

17
 HK-12 Beetle portable gas cutter

102 (STANDARD SPEED) For Propane

Metric System
PLATE TIP CUTTING OXYGEN PRESSURE FUEL GAS KERF
THICKNESS SIZE SPEED (Kg/cm2) PRESSURE WIDTH
(mm) (mm/min CUTTING PR-HEAT (Kg/cm2) (mm)
3 00 680 1.5 1.5 0.2 1.0
6 0 610 2.0 2.0 0.2 1.3
10 0 560 2.0 2.0 0.2 1.5
12.5 1 530 2.5 2.5 0.2 1.8
19 2 460 3.0 3.0 0.25 2.0
25 2 430 3.0 3.0 0.25 2.0
38 3 355 3.0 3.0 0.25 2.3
50 4 320 3.0 3.0 0.25 2.8
60 5 280 4.0 4.0 0.3 3.0
75 5 250 4.0 4.0 0.3 3.0
100 6 200 4.0 4.0 0.3 3.6
125 6 180 4.0 4.0 0.4 3.6
150 7 150 4.5 4.5 0.4 4.1
200 7 130 4.5 4.5 0.4 4.3
250 8 80 4.5 4.5 0.4 5.6
300 8 50 4.5 4.5 0.4 5.6

Inch system
Plate Tip Cutting Oxygen P.S.I.G PUEL GAS KERF
Thickness Size Speed P.S.I.G WIDTH
(Inches) (in/min (Inches)
CUTTING PR-HEAT
1/8 00 27 20 20 2.8 0.04
1/4 0 24 30 30 2.8 0.05
3/8 0 22 30 30 2.8 0.06
1/2 1 21 40 40 2.8 0.07
3/4 2 18 45 45 3.6 0.08
1 2 17 45 45 3.6 0.08
1-1/2 3 14 45 45 3.6 0.09
2 4 12.5 45 45 4.3 0.11
2-1/2 5 11 55 55 4.3 0.12
3 5 10 55 55 4.3 0.12
4 6 8 55 55 5.7 0.14
5 6 7 55 55 5.7 0.14
6 7 6 65 65 5.7 0.16
8 7 5 65 65 5.7 0.17
10 8 3 65 65 5.7 0.23
12 8 2 65 65 5.7 0.27

102(STANDARD SPEED) For Propane

Metric system
PLATE TIP CUTTING OXYGEN PRESSURE FUEL GAS KERF
THICKNESS SIZE SPEED (Kg/cm2) PRESSURE WIDTH
(mm) (mm/min CUTTING PR-HEAT (Kg/cm2) (mm)
3 00 800 7.0 1.5 0.2 0.8
6 0 740 7.0 2.0 0.2 1.0
10 0 680 7.0 2.0 0.2 1.3
12.5 1 630 7.0 2.5 0.2 1.3
19 2 560 7.0 3.0 0.25 1.5
25 2 510 7.0 3.0 0.25 1.8
38 3 460 7.0 3.0 0.25 2.0
50 4 410 7.0 3.0 0.25 2.6
60 5 360 7.0 4.0 0.3 2.8
75 5 320 7.0 4.0 0.3 2.5
100 6 250 7.0 4.0 0.3 3.3
125 6 230 7.0 4.0 0.4 3.6
150 7 180 7.0 4.5 0.4 3.6
200 7 140 7.0 4.5 0.4 4.6
250 8 100 7.0 4.5 0.4 5.1
300 8 80 7.0 4.5 0.4 6.1

Inch system
Plate Tip Cutting Oxygen P.S.I.G PUEL GAS KERF
Thickness Size Speed P.S.I.G WIDTH
CUTTING PR-HEAT
(Inches) (in/min (Inches)
1/8 00 31.5 100 20 2.8 0.03
1/4 0 29 100 30 2.8 0.04
3/8 0 27 100 30 2.8 0.05
1/2 1 25 100 40 2.8 0.05
3/4 2 22 100 45 3.6 0.06
1 2 20 100 45 3.6 0.07
1-1/2 3 18 100 45 3.6 0.08
2 4 16 100 45 4.3 0.10
2-1/2 5 14 100 55 4.3 0.11
3 5 12.5 100 55 4.3 0.11
4 6 10 100 55 5.7 0.13
5 6 9 100 55 5.7 0.14
6 7 7 100 65 5.7 0.14
8 7 5.5 100 65 5.7 0.18
10 8 4 100 65 5.7 0.20
12 8 3 100 65 5.7 0.24

Note:
1) All pressures are torch inlet pressures.
3) Oxygen purity is minimum of 99.7%.
2) Depending on the surface condition of the steel plate (scale, paint), either increase the fuel gas pressure of decrease
cutting speed. Also, when precision cutting is required, adjust all data.

18
 HK-12 Beetle portable gas cutter

12 Maintenance illustration
If you operate the machine according to the operating manual and the machine generates occurs
accidents because of the product quality, we guarantee to keep the machine in good repair free of
charge in half year based on invoice from the day we sell. According to the rules, if the following
cases occur, we can’t keep the machine in good repair free of charge:
1）The damages are leaded because of incorrect carriage or improper keeping.
2）The damages are leaded because of operating not according to the instruction manual and
beyond the specified range of voltage.
3）The machine don’t have maintenance card and receipt invoice.
4）The maintenance card don’t match the machine.
5）The damages are leaded by natural disasters or some irresistible incidents.
6）The damages are leaded because the machine is token apart by unprofessional person
7）The damages are leaded because of using the fitting parts and accessories, which don’t belong
to our company.

（Illustration: Do not inform if the specifications and technical

contents of the machine have been modified!）

19
 Acknowledgment
Honored company to choose the company’s production
The main production of the company:
CG1-30 Carriage gas flame cutter
CG1-30A Precision gas flame cutter
CG1-30H Fast carriage gas cutter (Can ticket plasma torch cutter)
CG1-100 Gas flame cutter (two torches)
CG1-100 Aprecision gas flame cutter (two torches)
CGD2-100 Multi-head gas flame cutter (three-five groups of torches)
CG1-2H H beam cutter
CG1-75 Ingot gas cutting machine
CG1-13 Multi-direction gas cutter
CG2-150 Profiling gas cutter
CG2-150A Profiling gas cutter (cutting dia.1800mm)
CG2-2700 Move style profiling gas cutter (cutting dia.2700mm)
CG2-600 Circular cutter
CG2-11 Magnet pipe gas cutter
CG2-11G Hand pipe cutter
CG2-11D Automatic pipe gas cutter
HK-30 Portable cutting machine
HK-30A Multi-using cutter
HK-55 Handy auto kit
HK-66 Metal cutter
HW-2000 Automatic welding machine
HK SERIES Auto- welding carriage
KMQ SERIES Portable profiling cutter
LGK8 SERIES Air plasms cutting machines
CG SERIES Multi-head straight cutting machines (five-twenty groups of torches)
HNC SERIES Numerical control flame / plasma cutting machine
ZYHC SERIES Auto-control far-infrared electricity welding dryer machines
TRB SERIES Welding dryer
YJJ-A SERIES Suction flux drying machine
WELDING&CUTTING FUTTINGS:
The regulator of Oxygen, acetylene，propane， argon and CO2; Handmade-welding torch and
handmade-welding tip;
Acetylene, propane equi-pressure tip, pitch needle, conduit conflux and so on cutting and welding
fittings.