Kernlochbohrer MKB-60RL User manual

Operating instructions
MKB-60RL
Kernlochbohrer GmbH
Geigersbühlweg 52
72663 Großbettlingen
Tel. [phone]
Email: [e-mail]
Version 0 1. Output 07/2022

CONTENTS
Warning 3
Thanks to the buyer 3
About this guide 3
Safety regulations 4
Product description 6
Technical data 6
Product structure 7
Precautions 8
Security check 10
Safety during operation 10
Electrical safety 11
Commissioning 11
Operation 12
Overload protection 13
Fasten the tool in the holder 13
Steel with low thickness 14
Non-ferrous metals 14
Machining of round or strongly curved material 15
Care and maintenance 15
Environmental protection 16
Noise/Vibration 16
Shutdown carbons 17
Troubleshooting 18
Behaviour in the event of disruptions 19
Warranty 19
Exploded view 20
Parts list 21
EC Declaration of Conformity Attachment
2

Operating instructions
WARNING
The magnetic drilling machine MKB-60RL is intended for professional use and may only be
operated by instructed persons. Strictly adhere to the instructions in the operating manual
to avoid electric shock or fire.
In the event of violations of the operating instructions which may result in injury or machine
damage, our company declines all responsibility.
In conjunction with the appropriate core drills, the machine is intended for drilling in all
magnetic metals.
The machine may only be serviced by persons who have the appropriate qualification and
certification.
THANKS TO THE BUYER
Thank you for purchasing the magnetic drilling machine MKB-60RL from Kernlochbohrer
GmbH. Please read the operating instructions and observe the safety instructions. By
operating it correctly, you will fully appreciate the excellent performance of our products.
Keep this manual in a safe place for future reference. If you have any questions about the
operation of the magnetic drilling machine, contact Kernlochbohrer GmbH directly. We are
always available to answer your questions.
ABOUT THIS GUIDE
These operating instructions are for the models
MKB-60RL
Check the machine model against the type plate.
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SAFETY REGULATIONS
❖Read all precautions before commissioning and keep the operating instructions.
❖Please follow the operating instructions carefully, as failure to observe these safety
precautions and instructions may cause electric shock, fire and/or serious injury.
1. Keep your work area clean and well lit. Disorder or unlit work areas can lead to
accidents.
2. Do not work with the power tool in potentially explosive atmospheres if flammable
liquids, gases or dust are present. Power tools produce sparks that can ignite dust or
fumes.
3. Keep children and other people away from the power tool during use. If you are
distracted, you may lose control of the tool.
4. Be attentive, work with concentration and pay attention to what you are doing. Do not
use a power tool when you are tired or under the influence of drugs, alcohol or
medicines. A moment of carelessness when using a power tool can result in serious
injury.
5. Wear suitable protective equipment and always safety glasses. Wearing suitable
protective equipment such as a dust mask, non-slip safety shoes, gloves, hard hat or
hearing protection reduces the risk of injury.
6. Avoid unintentional starting of the machine. Make sure that the power tool is switched
off before connecting it to the power supply.
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7. Remove adjusting tools or Allen keys before switching on the power tool. A tool or Allen
key that is on the drill spindle can cause injury.
8. Avoid unusual postures. Make sure you stand securely and keep your balance at all
times. Do not work on a ladder. This will help you control the power tool in unexpected
situations.
9. Wear appropriate clothing. Do not wear loose clothing or jewellery. Keep hair, clothing
and gloves away from moving parts. Loose clothing, jewellery or long hair can be
caught by moving parts.
10. Do not overload the appliance. Use the appropriate power tool for your work. With the
appropriate power tool, you will work better and more gently in the specified power
range.
11. Do not use a power tool whose switch is damaged. A power tool that cannot be
switched on and off is dangerous and must be repaired.
12. Unplug the appliance from the mains before making any adjustments, replacing
accessories or putting the appliance aside. This safety measure prevents the power
tool from starting unintentionally.
13. Keep unused power tools out of reach of children. Do not allow persons to use the tool
who are not familiar with it or have not read these instructions. Power tools are
dangerous when used by inexperienced persons.
14. Note that the voltage must not exceed ±5% of the nominal voltage. Higher voltages
can cause irreparable damage. Note that higher voltage peaks are not generated
when operating the machine via a generator.
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DESCRIPTION OF THE PRODUCT
The magnetic drilling machine is an electric tool for attaching and drilling on a horizontal
and vertical plane. Ideal for use in steel construction, industrial construction, mechanical
engineering, plant construction, shipbuilding, bridge construction, crane construction and
for assembly work in locksmith's shops. With our magnetic drill you can drill large steel
workpieces and all magnetic metals. The handling is very comfortable and the machine
can be used flexibly. By using the MKB-60RL, the amount of work can be reduced,
machining precision and work efficiency can be improved.
The magnetic drill MKB-60RL combines numerous advantages in one machine: The
magnetic drills have a built-in cooling system, a soft start, an electronic, infinitely variable
speed control, a right-left run and an overload protection. All this makes the MKB-60RL
magnetic drills a machine with constant and superior performance as well as maximum
safety for the user. The use of a magnetic drill reduces the workload on the one hand and
increases precision and work efficiency on the other.
TECHNICAL DATA
In order to constantly improve the product, our company reserves the right to change
the technical data without prior notice.
Max. Drill diameter for twist drill with morse
taper MK3
28 mm
Max. Drill diameter for cylindrical twist drills
16 mm
Max. Diameter for thread sheaths
M24
Max. Drill diameter for Weldon drill
60 mm
Mains voltage
230 V
Power consumption
1780 W
Nominal frequency
50-60 Hz
Max. Attraction force
14800 N
Jogging speed
100-340 1/min
Weight
28 kg
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PRODUCT STRUCTURE - MKB-60RL
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1.Air inlet cover 8. Carrying handle
2.Motor housing 9. Speed controller
3.Drilling lever 10. On/Off switch machine
4.Gearbox 11. On/off switch Magnet
5.Drilling spindle 12. Switch right/left rotation
6.Cable routing 13. Power connection
7.Coolant tank 15. Magnetic base/magnet
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PRECAUTIONS
1. Read the manual carefully before use to understand the structure and handling of
the magnetic drilling machine (electromagnetic attitude, drilling machine itself and
the gear function).
2. Before installing or removing a magnetic drill, ensure that the motor switch is turned
off and the mains plug is disconnected.
3. After mounting and tightening the drill, the key must be removed.
4. Make sure to use a sharp and suitable drill bit.
5. Make sure that the work surface is level and at least corresponds to the base area
of the magnet. The base surface must be made of a material that is at least 10mm
thick, magnetisable and clean.
6. Make sure that the mains cable is not close to the drill.
7. Make sure that both the motor switch and the magnetic switch are switched off.
8. The magnetic drilling machines are equipped with a coolant tank. The coolant tank
is attached to the frame of the magnetic drilling machine with two screws. Only use
an oil-water mixture that is available from specialist dealers. After use, it is
imperative to clean the drill spindle to prevent subsequent corrosion. In order for
the coolant to flow through the machine, the centring pin must be inserted in the
crown drill.
9. The use of the magnetic drilling machine in the equipment with electromagnet or
permanent magnet in an inclined or vertical position on steel components is only
permitted if the magnetic drilling machine has been secured with the safety belt
included in the scope of delivery. In the event of a power failure or excessive load,
the magnetic holding force is not maintained. The magnetic drilling machine may
fall down and cause accidents.
10. Non-magnetic materials cannot be drilled with the magnetic drill. To drill non-
magnetic material, a drill with a vacuum foot must be selected.
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11. You cannot use an electric welder and a magnetic drill at the same time on the
same piece of sheet steel, otherwise there is a risk of electric shock.
12. Continuous operation of the magnetic drilling machine for more than 2 to 3 hours is
not permitted.
WARNING!
Strong magnet!
Persons with pacemakers or other medical implants must not use the magnetic
drill. Carrying metal parts and watches is prohibited.
WARNING!
Danger of falling due to sudden pendulum movement of the magnetic drilling
machine!
When working on a scaffold, the magnetic drilling machine can perform a sudden
pendulum movement when starting up or in the event of a power failure. Secure
the magnetic drilling machine with the enclosed safety belt.
CAUTION!
Pull the plug out of the socket before making adjustments to the magnetic drill or
changing accessories. Unintentional starting of the drill can lead to accidents.
CAUTION!
Observe the inspection interval for load slinging equipment of your trade
association! The safety belt supplied with the magnetic drilling machine is a load
sling and must be checked regularly.
9

SAFETY CHECK
Check the magnetic drilling machine before each switch-on or at least once per shift.
Report any damage or defects and changes in operating behaviour immediately to the
responsible manager.
Check all safety devices
•at the beginning of each shift (in case of interrupted operation),
•once a week (for continuous operation),
•after each maintenance and repair.
Check that the prohibition, warning and instruction signs as well as the markings on the
magnetic drilling machine are
•are legible (clean if necessary),
•are complete (replace if necessary).
SAFETY DURING OPERATION
WARNING!
Before switching on the magnetic drilling machine, make sure that this will
•there is no danger to persons,
•no things are damaged.
Refrain from any working method that may compromise safety:
•Make sure that no one is endangered by your work.
•It is essential to follow the instructions in this operating manual during
installation, operation, maintenance and repair.
•Do not work on the magnetic drill if your ability to concentrate is reduced for any
reason - such as the influence of medication.
•Observe the accident prevention regulations of the employers' liability insurance
association responsible for your company or other supervisory authorities.
•Remain at the magnetic drilling machine until a complete standstill has been
reached.
•Do not leave magnetic drilling machines with electromagnet unattended
magnetised at the place of work.
•Use the prescribed body protection equipment. Wear close-fitting clothing and a
hair net if necessary.
10

ELECTRICAL SAFETY
Have the electrical machine/equipment checked regularly. Have any defects such as loose
connections, damaged cables, etc. repaired immediately.
A second person must be present when working on live parts and switch off the voltage in
an emergency. Switch off the magnetic drilling machine immediately in the event of faults
in the electrical supply!
Observe the required inspection intervals according to the Ordinance on Industrial Safety
and Health and the inspection of operating equipment.
The operator of the machine must ensure that the electrical installations and equipment
are checked for proper condition, namely,
•before initial commissioning, before recommissioning and after modification or
repair by a trained electrician in accordance with VDE or under the direction and
supervision of a trained electrician in accordance with VDE.
•and at specified intervals.
The deadlines shall be set in such a way that any defects that arise and are to be expected
are detected in good time.
Bei der Prüfung sind die sich hierauf beziehenden elektrotechnischen Regeln zu beachten.
Testing prior to initial commissioning is not required if the manufacturer or installer confirms
to the operator that the electrical systems and equipment are in compliance with the
provisions of the accident prevention regulation.
COMMISSIONING
Pay attention to the mains voltage! The voltage of the power source must match the
specifications on the type plate of the magnetic drilling machine. Your power source must
be equipped with a protective earth connection.
Permissible voltage fluctuations in normal cases: ±5% volts.
Permissible frequency fluctuations: ± 1Hz (50/60 Hz)
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BEDIENUNG
•Continuous operation of the magnetic drilling machine for more than 2 to 3 hours is
not permitted. There is a risk of fire if the load is too high! The magnetic drilling
machine must first cool down before continuous operation can be resumed.
•If the drill gets jammed, the magnetic drill must be switched off immediately.
•Operation of the magnetic drilling machine outdoors is not permitted.
•Drilling into non-magnetisable surfaces is only possible if a sufficiently large steel
plate has been fixed to the non-magnetisable surface.
•Plug in the mains plug. Position the machine so that the drill bit is aimed at the spot
to be drilled.
•Make sure that there is an oil-water mixture in the coolant tank. First switch on the
electromagnet and then the drill spindle. When switching off, first switch off the drill
spindle and then the electromagnet.
•Bei Bohrarbeiten in vertikaler Lage müssen zwei Personen zugegen sein.
•The safety belt should also be used during horizontal drilling work to secure the
magnetic drill against falling from elevated work locations.
•The manually operated drill feed should not exceed 0.05mm per revolution.
•If the drill suddenly stops, switch off the machine immediately.
•The gear oil should be changed after 300 hours of operation.
•Only use suitable drills for the intended machining task.
Tools that can be used:
•Weldon drill up to Ø 60mm
•taps up to M24
•cylindrical twist drills up to 16mm
•Twist drills with morse taper MK3 up to 28mm
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WARNING!
Make sure that the coolant system is completely drained and cleaned after finishing
work. Afterwards, the stopcock must be closed again.
OVERLOAD PROTECTION
The magnetic drilling machine MKB-60RL is equipped with an overload protection. If the
machine suddenly stops working during use because it has been overloaded, disconnect
the machine from the power supply and wait a few minutes.
FASTENING THE TOOL IN THE HOLDER
Standard
Insert the tool and clamp it with the screw on the side.
Quick change
Push the sleeve upwards and insert the tool. Release the sleeve again and check that it is
securely fastened.
Standard Quick change
Place the magnetic drilling machine on the workpiece.
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Note:
A sensor controls the possible magnetic holding force. If the magnetic holding force
on the component is not sufficient, the magnetic drilling machine cannot be
switched on.
The magnetic drilling machine will only adhere properly to the material to be drilled into if
the surface of the material is clean and smooth. Loose rust, dirt and grease must be
removed before setting up the magnetic drill, and any welding beads or unevenness must
be smoothed out. A thin layer of paint does not impair the adhesive effect. If necessary,
also clean the magnet base. After switching on the magnet, shake the magnet drill
vigorously to make sure that it adheres properly to the material. If this is not the case,
check the material surface and the underside of the magnet base, clean if necessary and
switch the magnet on again.
STEEL WITH LOW THICKNESS
Optimum adhesion is achieved on low-carbon steel with a minimum thickness of 12mm.
For drilling in steel with less thickness, you can place a 12mm steel plate under the
material (at the point where the magnetic foot is placed).
NON-FERROUS METALS
For drilling in non-ferrous metals, fix a steel plate to the material to be worked on and place
the magnetic drill stand on it. Insert the mains plug into the socket. Position the machine
on the position to be machined and switch on the magnet. Make sure that there is no
contamination on the surface and that the holding force of the magnet is sufficient. The
material thickness of the steel plate should be more than 10mm.
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MACHINING OF ROUND OR STRONGLY CURVED MATERIAL
When working on round or strongly curved material, the magnetic foot is placed on the
material so that its longitudinal axis is parallel to the longitudinal axis of the round material.
Fill the free space between the magnet foot and the material on both sides over the entire
length of the magnet foot with wedges made of steel. After switching on the magnet, the
holding force via the wedges placed underneath should be so high that the machine has a
secure and firm hold.
The steel wedges must be distributed on both sides of the magnetic foot in such a way that
the axis of the drill is aligned directly with the highest point of the curved material. The drill
may otherwise run sideways. Make sure by shaking the magnetic drill that the holding
force of the magnetic foot is fully and sufficiently given.
CARE AND MAINTENANCE
Before starting maintenance or repair work, be sure to pull out the mains plug!
Repairs may only be carried out by qualified personnel who are suitable on the basis of
their training and experience. The tool must be checked by a trained electrician according
to VDE after each repair. The power tool is designed to require a minimum of care and
maintenance.
However, the following points must always be observed:
•After completing the drilling work, clean the magnetic drilling machine. Then grease
the drill spindle thread. The ventilation slots must always be clean and open. Make
sure that no water gets into the magnetic drilling machine during the cleaning
process.
•After approx. 300 hours of operation, the carbon brushes must be checked by a
trained electrician in accordance with VDE and replaced if necessary (only use
original carbon brushes).
•Have switches, cables and plugs checked quarterly by a trained electrician in
accordance with VDE.
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ENVIRONMENTAL PROTECTION
Raw material recovery instead of waste disposal!
To avoid transport damage, the unit must be delivered in sturdy packaging. Packaging as
well as the unit and accessories are made of recyclable materials.
The plastic parts of the unit are labelled according to the material. This enables
environmentally friendly, sorted disposal via the collection facilities offered.
Only for EU countries
Do not throw power tools in the household waste! According to the European Directive
2012/19/EU on waste electrical and electronic equipment and its implementation in
national law, used power tools must be collected separately and recycled in an
environmentally sound manner.
NOISE/VIBRATION
The noise of this power tool is measured according to DIN 45 635, part 21. The sound
pressure level at the workplace may exceed 85 dB (A); in this case, sound protection
measures for the operator are required.
Wear hearing protection!
Hand/arm vibration is typically lower than 2.5m/s². Measured values determined according
to EN 61 029.
The indicated vibration level represents the actual applications of the power tool. However,
if the power tool is used for other applications, with deviating application tools or
insufficient maintenance, the vibration level may deviate. This can significantly increase the
vibration load over the entire working period.
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For an accurate estimation of vibration exposure, the times when the unit is switched off or
running but not actually in use should also be taken into account. This can significantly
reduce the vibration load over the entire working period.
Establish additional safety measures to protect the operator from the effects of vibration
such as: Maintenance of power tool and insert tools, keeping hands warm, organisation of
work procedures.
SHUTDOWN CARBONS
The power tool is equipped with a self-shutting carbon brush to protect the motor. If the
brushes are worn, the machine switches off automatically. In this case, both carbon
brushes must be replaced simultaneously with original carbon brushes by a trained
electrician according to VDE.
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MISSING SEARCH
Error
Cause
Remedy
Magnetic base
without function
Switching contact faulty
Replace switch
Power supply is defective, plug loose
Replace cable and plug
Overload, the fuse has blown
Replace fuse
Short circuit in the electromagnet or
defective electromagnet
Replace or repair electromagnet
Magnetisability of the substrate too low
Check the thickness of the substrate,
check the material properties of the
substrate.
Circuit board defective
Replace printed circuit board
Drilling spindle
does not switch on
Electromagnet not switched on
Before switching on the drill spindle,
first switch on the electromagnet
The sensor detects insufficient magnetic
holding force on the component
See operating instructions "Steel with
low thickness
Switching contact faulty
Replace switch
Defective rotor or stator winding
Replace defective component
completely
Drive motor
problems
The spark colour on the electric motor
turns orange-red
Reduce the drill feed rate
Sparks fly out
Replace the carbon brushes
Sparks fly out in a ring of fire
Check for defective rotor or stator
winding, motor burnt out
Drill tip runs away,
drilled hole is out-
of-round
Hard spot in workpiece Length of cutting
spirals/or angle on drill unequal
Drill bent
Use new drill
Use new drill
Drill or core hole
drill "burns out
Feed rate too high
Reduce feed rate
Chips do not come out of the borehole
Retract drill more often
Drill blunt
Sharpen drill/use new drill
No or too little cooling
Use coolant
The drill chuck or
the taper mandrel
cannot be inserted
Dirt, grease or oil on the tapered inside of
the drill chuck or on the tapered surface of
the drill spindle Position of the driver in
the drill spindle not observed
Clean surfaces carefully, keep
surfaces free of grease
Coolant does not
run
Centring pin in the crown drill is missing
Insert centring pin
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BEHAVIOUR IN THE EVENT OF DISRUPTIONS
Switch off the machine in case of malfunctions, disconnect it from the mains. Work on the
machine's electrics may only be carried out by a trained electrician in accordance with
VDE.
WARRANTY
In accordance with our general terms and conditions of delivery, a warranty period of 12
months applies for material defects in business transactions with companies (proof by
invoice or delivery note). Damage caused by natural wear and tear, overloading or
improper handling shall remain excluded from this. Damage caused by material or
manufacturer defects shall be remedied free of charge by repair or replacement.
Complaints can only be accepted if the device is sent to the supplier unassembled.
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Exploded view
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