SKF TMBH 5 User manual

Instructions for use
TMBH 5

2EN
Safety recommendations................................................................................................................. 3
EU Declaration of Conformity .......................................................................................................... 4
UK Declaration of Conformity .......................................................................................................... 4
1. Scope of delivery ...................................................................................................................... 5
2. Introduction.............................................................................................................................. 5
2.1 Principle of operation...................................................................................................................................6
2.2 Distinguishing features................................................................................................................................7
2.3 Storage .........................................................................................................................................................7
3. Description ............................................................................................................................... 7
3.1 Technical data ...............................................................................................................................................8
4. Installation ............................................................................................................................... 8
5. Preparation for use................................................................................................................... 9
6. Operation ............................................................................................................................... 10
6.1 User interface ............................................................................................................................................ 10
6.2 Temperature mode.................................................................................................................................... 10
6.2.1 Temperature measurement.......................................................................................................... 11
6.2.2 Change of temperature unit......................................................................................................... 11
6.3 Time mode ................................................................................................................................................ 11
6.4 Power level selection ............................................................................................................................... 12
7. Safety features ....................................................................................................................... 12
8. Troubleshooting...................................................................................................................... 13
9. Warning labels and safety ....................................................................................................... 14
10. Spare parts ............................................................................................................................ 15
11. Maintenance and disposal ....................................................................................................... 15
Table of contents
Original instructions

3EN
Safety recommendations
• Because the TMBH 5 generates a magnetic
field, people wearing a pacemaker or implants
must not be within 5 m (16 ft) of the TMBH 5
during operation.
• During the heating process observe a safety
distance of 30 cm (1 ft) with the workpiece or
the heater. Electronic equipment, such
as wristwatches, cellphones, etc. may also
be affected.
• Always follow the operating instructions.
• Make sure that the power supply voltage does
not deviate from the acceptable range of
100 - 240V, 50 - 60Hz.
• Use the right power level, especially with
shielded or sealed with metallic inserts
bearings. SKF does not recommend heating
bearings capped with seals or shields above
80 ˚C (175˚F). However, if higher temperatures
are necessary, please contact SKF. Small
bearings to be heated using low power mode,
25% or 10% to avoid risking overheating the
bearing.
• Do not expose the TMBH 5 to high humidity,
outdoors or to flammable atmospheres.
• Do not modify the TMBH 5. All repairs should
be taken care by SKF repair shops. Do not touch
a damaged heater if plugged to the mains.
• The TMBH 5 is solely intended to heat up
bearings, gears, couplings and other industrial
annular components.
• The heater needs to be operated by
professionally trained people.
Do not leave the heater unattended especially
when using time mode.
• Avoid contact with hot surfaces. Always wear
protective gloves. In case of burnings ask for
first aid help if necessary.
• Never heat to temperatures above
200 °C (392 °F).
• The heater is designed for maintenance
operations where some cooling in between jobs
is allowed.
• In case of fire, do not use water nor powder-
based extinguisher. This will damage the
electronics. A CO2 based extinguisher is
recommended, if available.
• Be aware that fumes coming from the heated
element might occur.
• Make sure that the component does not heat up
above any desired limit by properly measuring
temperature. If so, adjust the power level
accordingly.

4EN
EU Declaration of Conformity
TMBH 5
We, SKF MPT, Meidoornkade 14, 3992 AE Houten,
The Netherlands herewith declare under our sole
responsibility that the products described in these
instructions for use, are in accordance with the
conditions of the following Directive(s):
EMC DIRECTIVE 2014/30/EU
EUROPEAN LOW VOLTAGE DIRECTIVE 2014/35/EU
and are in and are in conformity with the following
standards:
EN 61000-6-2 (2005) + AC (2005)
Industrial (Immunity)
CISPR16-2-3: 2010 + A1:2010 +A2:2014
Class A equipment (Emission)
EN 61000-3-2 (2014), A (Emission)
EN 61000-3-3 (2013) (Emission)
EN 61000-6-4 (2007), A1(2011),
Class A equipment (Emission)
EN 60335-1 (2012): Safety of household and
similar electrical appliances
EN 60519-1: 2020: Safety in installations for
electroheating and electromagnetic processing
RoHS DIRECTIVE (EU) 2015/863 and the
harmonized standard: EN IEC 63000:2018:
EN 50581:2012: Technical documentation for the
assessment of electrical and electronic products with
respect to the restriction of hazardous substances.
Houten, The Netherlands, April 2023
Guillaume Dubois
Manager Quality and Compliance
UK Declaration of Conformity
TMBH 5
We, SKF MPT, Meidoornkade 14, 3992 AE Houten,
The Netherlands herewith declare under our sole
responsibility that the products described in these
instructions for use, are in accordance with the
conditions of the following Directive(s):
Electromagnetic Compatibility Regulations 2016
(2016 No. 1091)
Electrical Equipment (Safety) Regulations 2016
(2016 No. 1101)
and are in and are in conformity with the following
standards:
EN 61000-6-2 (2005) + AC (2005)
Industrial (Immunity)
CISPR16-2-3: 2010 + A1:2010 +A2:2014
Class A equipment (Emission)
EN 61000-3-2 (2014), A (Emission)
EN 61000-3-3 (2013) (Emission)
EN 61000-6-4 (2007), A1(2011),
Class A equipment (Emission)
EN 60335-1 (2012): Safety of household and
similar electrical appliances
EN 60519-1: 2020: Safety in installations for
electroheating and electromagnetic processing
The Restriction of the Use of Certain Hazardous
Substances in Electrical and Electronic Equipment
Regulations 2012 (2012 No. 3032) and the
harmonized standard: EN IEC 63000:2018:
Technical documentation for the assessment of
electrical and electronic products with respect to the
restriction of hazardous substances.
The person authorised to compile the technical
documentation on behalf of the manufacturer is
SKF (U.K.) Limited, 2 Canada Close, Banbury,
Oxfordshire, OX16 2RT, GBR.
Houten, The Netherlands, April 2023
Guillaume Dubois
Manager Quality and Compliance

5EN
1. Scope of delivery
The TMBH 5 portable induction heater contains the
following:
• Induction heater TMBH5 and clamp.
• Magnetic K-type 600 mm (23.6 in) temperature
probe TMBH 5-3.
• Temperature resistant gloves TMBA G11.
• Schuko earthing contact plug black
(not mounted) in the TMBH 5/230V version.
• Molded plug with cable in the TMBH 5/120V
version.
• Bearing holder for positioning workpiece.
2. Introduction
The TMBH 5 portable induction heater is designed
to heat up roller bearings that are mounted with an
interference fit onto a shaft.
Other ring-shaped metallic components can also be
heated.
The heat causes the bearing to expand, which
eliminates the need to use force during installation.
A 90 °C (162 °F) temperature difference between
the bearing and shaft is generally sufficient to
enable the installation.
At ambient temperature of 20 °C (68 °F) the bearing
must be heated to 110 °C (230 °F).
Shielded bearings or sealed bearings with metallic
insertions must be controlled as the shield or
the metallic insert might heat much faster than
the bearing itself. A reduced power setting is
recommended in these cases.

6EN
2.1 Principle of operation
The TMBH 5 portable induction heater consists
of a small graphite clamp embedded in a polymer
housing with electromagnetic coils beneath it.
When the heater is switched on, electric current
runs through these coils, generating a fluctuating
magnetic field, but no heat on the clamp itself.
However, once you set an iron or stainless-steel
component inside the clamp, the magnetic field
induces many smaller electric currents
(Eddy currents) in the component’s metal.
Fig. 1 – Magnetic field around bearing
Because iron is a poor conductor of electricity,
when all these small currents run through the iron,
much of the energy is converted into heat. Thus,
around an induction heating clamp, the heat is not
coming from the clamp, but it is generated in the
component itself. This makes heating a lot more
efficient than other heating methods.
The drawback is that only components made from
iron will work with induction. Components made
of only copper or aluminum conduct electricity too
good to generate significant heat. Cast-iron and
stainless-steel work fine. A rule of thumb is: if a
magnet sticks to the component, the induction
heater will heat it up. Nonetheless, small brass or
copper rings (such as shields or bearing cages), due
to its small mass, might heat much faster than the
rest of the bearing and a low power setting must be
always chosen.

7EN
2.2 Distinguishing features
• Portable:
Thanks to the medium frequency technology
used and the right choice of materials, the
heater is light weight. This, together with the
built-in handle, makes it portable to use it in
different locations or to easily store it in a
locked place.
• Versatile:
Thanks to the thin fingers of the induction
clamp, the user doesn’t need to choose which
yoke is needed for every component. This
increases the number of different components
that you can heat up and at the same time
reduces the number of accessories needed.
• Quiet:
Due to the medium frequency technology the
heating of components does not make noise.
An LED indicates when the heater is heating,
even if you cannot hear it.
• Power regulation:
Thanks to the different power settings, the
heater can heat up sensitive components at a
slower pace other than bearings.
2.3 Storage
• Gloves:
The gloves could be stored in the attached
compartment.
• Clamp:
The clamp could be stored in the attached
compartment.
• Bearing stand:
The bearing stand could be pushed and clicked
into the compartment.
To take it out, pull the bearing stand with your
fingers out of the compartment.

8EN
3. Description
The operation of the heater is controlled by the
internal electronics in two modes.
The operator can either select the desired
temperature of the bearing in Temperature Mode or
set the length of time that the bearing or component
will be heated in Time Mode. The power level can be
adjusted to Low Power Mode for slower heating
of sensitive workpieces (for example, bearings with
shields or metallic inserts in the seals).
3.1 Technical data
Designation TMBH 5
Application 1)
Bearing weight 2) up to 5 kg (11 lb)
Min. bearing bore diameter 20 mm (0.8 in)
Max. bearing bore diameter 100 mm (4 in)
Max. bearing width 50 mm (2 in)
Maximum Power TMBH 5/230V: 350W
TMBH 5/120V: 350W
Voltage and frequency TMBH 5/230V: 230V, 50/60Hz
TMBH 5/120V: 120V, 50/60Hz
Max. current consumption TMBH 5/230V: 2A
TMBH 5/120V: 4A
Temperature Control 40 - 200 °C (104 - 392 °F)
Time Control 5 seconds – 60 minutes
Demagnetization The heater does not magnetize
Dimensions 275 × 270 × 180 mm (10.8 ×10.6 ×7.09 in)
Total weight 3 kg (6.6 lb)
1) SKF does not recommend heating bearings capped with seals or shields above 80 °C (175 °F).
However, if higher temperatures are necessary, please contact SKF.
The heater is designed for maintenance operations where some cooling in between jobs is allowed.
2) Depending on the geometry of the bearing, maximum heating temperature.
4. Installation
Make sure that the line voltage is within the
specified range depending on the heater type.
IMPORTANT:
The main switch in the heater is not a safety
switch. The heater needs to be unplugged from the
mains to perform any repair. If the mains cable is
damaged, it must be replaced.
NOTE:
The heater does not need to be connected to ground
since it is a double insulated device with a plastic
housing.

9EN
5. Preparation for use
• Place the TMBH 5 on a workbench or similar
(stable base)
• Make sure the line voltage is within the specified
range of 100–240 V, 50–60 Hz. Connect the
mains plug to a suitable power supply.
• Carefully place the workpiece to be heated at
the top of the bearing stand.
• Then open the clamp and place it around the
workpiece.
Connect the heating clamp to the heater.
Never connect or disconnect the heating clamp
during operation
• The heater is designed to heat up one
component at a time.
• If used in Temperature Mode, plug the
temperature probe into the connector.
Place the magnetic tip of the probe on the flat
surface of the bearing inner ring or on the
innermost surface of the workpiece.
It is then recommended to attach the probe
to the hottest part of the component which in
general is the part closest to the clamp.
• Switch on the heater from the main switch,
which is located at the left side of the heater.
The power LED will be lit for few seconds until
the entire display and heater will be ready.
• Select the right heating mode and settings.
• Once you have finished heating the component,
attach the magnetic probe tip to the metal-
lic sheet on the heater’s housing. This is the
temperature probe’s parking spot, located at the
upper right of the heater.

10 EN
6. Operation
6.1 User interface
STA RT
STOP
POWER
LOW
SKF Induction Heater
TMBH 5
TW0062
Fig. 2 – User interface
From left to right:
• The LOW POWER button and LED.
This button reduces the power of the heater.
If low power mode is selected, then the red LED
is switched on.
• The temperature/time symbols button is the
MODE button. This button shifts in between
Temperature Mode and Time Mode.
• LED display. The process information is
displayed here: goal temperature, actual
temperature, error codes, time, etc.
• MINUS and PLUS buttons. These buttons
decrease or increase the value shown on the
LED display.
• START/STOP button and heating LED.
Press to start or stop the heater.
The LED button is permanently ON when the
heater is heating.
6.2 Temperature mode
In this mode components can be heated to a given
temperature.
• If the LED screen shows °C or °F,
Temperature Mode is selected.
• The selected temperature is shown on the
display. The default temperature for bearings
is 110 °C (230 °F). If a different temperature is
desired, press + or – to adjust the temperature
in steps of 1˚. Keep the + or – buttons pressed
for a faster adjustment.
• It may be desirable to heat up bearings or
other components to temperatures above
110 °C (230 °F) for an increased mounting time
or a tighter interference fit. Consult the bearing
specifications to determine the maximum
permitted temperature. Always ensure that
the bearing does not lock due to an excessive
expansion of the inner ring compared to the
outer ring.
• Make sure that the temperature probe is
mounted on the bearing inner ring flange.
• Press START/STOP to start the heater.
The heating LED will switch on. Even if you
cannot hear it, the component is being heated.
• The user interface displays the temperature
detected by the temperature probe.
• During heating, when pressing the MODE
button, the heating time is shown.
• When the selected temperature has been
reached, the bearing is then ready to be taken
out. An acoustic signal will be generated for 4
seconds.
• If the component is not removed nor the
process stopped, the temperature holding
feature will maintain the component at
temperature for 5 minutes.
• By removing the temperature probe or
the workpiece, the heating process will
automatically stop. It can also be stopped by
pressing the START/STOP button.
• Remove the workpiece with proper heat
resistant gloves, supplied with the unit.
• The heater is now ready to heat up another
workpiece with the same settings.
• Depending on the size of the bearing, the
temperature probe might take some time to
register the first temperature increase.

11EN
IMPORTANT:
The TMBH 5 can heat up components up to
200 °C (392 °F). Heating above this temperature
(for example using Time Mode) can damage
the heater.
6.2.1 Temperature measurement
• When the heater is not operating, the
temperature of the workpiece can be measured
by pressing MODE and START/STOP at the
same time. Press any button to cancel the
temperature measurement.
• The temperature probe is a valuable part of
the heater. Treat it with care and after use we
suggest that it is placed on the probe’s parking
spot front right side to avoid damages on it.
• The surface of the workpiece where the
temperature probe is located should be clean,
dry and flat. Measuring on dirty, wet or curved
surfaces will give wrong temperature readings
and may result in overheating the workpiece or
even damaging the heater.
• When heating one component after another
in warm environments or with very high
temperature settings, the temperature probe
might need some extra time to cool down
before starting a new heating job.
Error code E06 might be triggered then. If this
happens, simply allow some cooling time on a
cold surface.
6.2.2 Change of temperature unit
Press MODE and “+” at the same time to change in
between °C to °F.
Once a heating cycle is completed, the temperature
unit setting remains the same even after
disconnecting the heater from the mains power.
6.3 Time mode
This mode is suitable for batch production, when
the time required to heat a workpiece to a given
temperature is already known. It is also used in
emergency cases when the temperature probe
is missing or defective. The temperature of the
workpiece must be then checked using an external
thermometer, like a TKDT 10.
• If the user interface display shows °C or °F,
press the MODE button to select Time Mode.
• Press + or – to adjust the time.
• Press the START/STOP button to start the
heater. The display will show the remaining
time.
• Whilst heating, the temperature measured
by the probe (if attached) can be displayed by
pressing the MODE button. When pressed again
it displays the remaining time again.
• When the time has elapsed, the heating stops,
and an acoustic signal is generated for
4 seconds.
• Remove the workpiece with proper handling
equipment.
• The TMBH 5 is now ready to heat another
workpiece with the same settings.
IMPORTANT:
The TMBH 5 can heat up components up to
200 °C (392 °F). Do not use Time Mode to go above
200 °C (392° F). Heating above these temperatures
might damage the heater.
Do not leave the heater unattended in Time Mode.

12 EN
6.4 Power level selection
The shape, weight, size and internal clearances, all
affect to the time required to heat up a bearing. The
large variety of bearings precludes the possibility of
providing a specific power level setting for each type.
Instead, the following guidelines are provided:
• In the case of shielded or sealed bearings with
metallic inserts, a LOW POWER mode must be
always selected. Light metallic rings can heat
up much faster than the rest of the component.
This might damage the bearing or the heater
itself due to too high temperatures.
• In case of very small bearings a LOW POWER
mode must be selected, otherwise the
component heats up faster than what can
be read by the temperature probe, the
component might reach temperatures above
the desired level.
• Select a low power setting when heating
bearings with a tight internal clearance
(C1 or C2) or preloaded bearings. Slow heating
ensures that the bearing expands evenly,
thereby preventing damage to the bearing.
The low power modes can be selected by
pressing the LOW POWER button. The display
will indicate the power level selected.
7. Safety features
The TMBH 5 is equipped with the following safety
features:
• Automatic overheating protection of the heater.
The heater has a couple of temperature sensors
to protect itself. In case that the temperature
measured by them is too high, measures are
automatically taken to stop this. For example,
the heater might lower the power or stop. In
any case, the user must monitor the process
since too fast temperature increases might not
be detected on time.
• Over current protection.
The heater has a built-in fuse.
• Faulty temperature probe detection.
In Temperature Mode, the heater will give an
error and stop if no temperature increase is
detected.

13
8. Troubleshooting
It might happen that you encounter a failure in the
heater. If this happens, have a look to the following
options:
• A system fault will be indicated by an acoustic
signal and one of the following fault codes on
the user interface display will be shown:
Error code Fault Action to fix it
E00 Empty Clamp
- Clamp is open
- Non ferromagnetic workpiece like
aluminium or copper
- Close the clamp properly
- Put the right workpiece in the clamp
E01 Human Interface Failure
- Internal electronics or communication
problem
- Return to reseller
E04 Power electronics overheated
- Too intense use without time to cool
down
- Remove workpiece
- Switch off the heater to allow it to cool
down. The error will be automatically
cleared
- Otherwise, return to reseller
E05 Too slow temperature increase
- Temperature probe not attached to the
component
- Workpiece out of range (too big or heavy
for heating capacity)
- Make sure that the thermocouple is
mounted correctly (to a flat, clean
surface)
E06 Missing or Invalid Thermocouple
- Temperature probe not connected or
damaged
- Temperature probe removed during
operation
- Temperature probe still cooling down
from a previous heating job.
- Check Thermocouple connection and
wire damage
- If damaged, use Time Mode and use an
external thermometer
- Do not remove the probe during
operation
- Allow some cooling time until
temperature probe reading stabilization.
E07 Power electronics failure
- Temperature sensor (power switches)
failed.
- Open/short circuit
- Reset the heater
- Replace power print
(send to reseller)
E08 Mains supply voltage out of range
- Eventual voltage peak
- Power supply out of tolerance (10%)
- Reset the heater
- Check mains supply for correct level
E09 Clamp Removed/disconnected
- Clamp cable, connector etc. damaged
- Clamp not connected properly
- Connect the clamp properly
- Replace the clamp
E010 Environment temperature too high - Let the heater cool down
- Use the heater in low power mode
- Place the heater in right working
conditions (0-40°C)
E013 Config write failure
- Electronics problem
- Try to reset the heater,
turn OFF and ON
E014 Config read failure
- Electronics problem
- Try to reset the heater,
turn OFF and ON

14
9. Warning labels and safety
Warning label Meaning
Use heat protection gloves
In case of burning your fingers, get first aid help if necessary.
Risk of pinching your fingers
Special care needs to be taken into account when positioning components on the heater
or transporting them.
Always read the instructions for use
Electro-magnetic field radiation
The heater emits a magnetic field and a distance of 30cm (1ft) needs to be kept in
between the user and the heater when heating.
Risk if metallic implants in the user’s body
Due to the magnetic field, people with implants should take
extra safety distance.
Hot surfaces
There are hot surfaces on the heater such as the heated element, but also
the heater itself might get hot. Take the right preventive measurements.
Risk for people wearing pacemakers
Due to the magnetic field, people wearing pacemakers should take
extra safety distance.

15
10. Spare parts
Designation Description
TMBH 5-3 Temperature probe,
magnetic K-type incl.
cable 600 mm (23.6 in)
and plug
TMBH 5-4 Heating clamp
(incl. cable and plug)
TMBH 5-5 Bearing Stand
TMBA G11 Heat resistant gloves,
one pair
11. Maintenance and disposal
• Store the heater in a dry area, with low
humidity (0-95% non-condensing).
• Store and transport the heater within a
temperature range of 0- 50 °C (32 - 122 °F).
• Keep the heater clean with a soft dry cloth.
Remove all oil drippings that might remain
after use.
• The heater does not require any specific
maintenance nor regular calibration.
• Do not try to fix the heater yourself.
Approach your SKF contact person or distributor
if there is any malfunctioning or preventive
repair needed.
• The heater is calibrated during production. If
some repairs are performed, the heater needs
to be recalibrated.
• In case of disposal of the heater, take the
necessary measurements to recycle it.
Do not dispose it in a general waste bin.

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© SKF Group 2023
The contents of this publication are the copyright of the publisher and may not be reproduced (even
extracts) unless prior written permission is granted. Every care has been taken to ensure the accuracy
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MP5523EN · 2023/08