NSK IHN010 User manual

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Table of Contents
Chapter����������������������������������������������������������������������������������������������������������������������������������������������� Page
Safety Recommendations������������������������������������������������������������������������������������������������������������������������3
1 Introduction��������������������������������������������������������������������������������������������������������������������������������������3
1�1 Intended Use������������������������������������������������������������������������������������������������������������������������������������3
1�2 Principle of Operation����������������������������������������������������������������������������������������������������������������������4
1�3 Distinguishing Feature���������������������������������������������������������������������������������������������������������������������4
2 Description ���������������������������������������������������������������������������������������������������������������������������������������4
2�1 Components�������������������������������������������������������������������������������������������������������������������������������������4
2�2 Technical Data����������������������������������������������������������������������������������������������������������������������������������5
3 Preparation for Use��������������������������������������������������������������������������������������������������������������������������6
4 Operation������������������������������������������������������������������������������������������������������������������������������������������6
4�1 Function of Displays ������������������������������������������������������������������������������������������������������������������������7
4�2 Function of Buttons �������������������������������������������������������������������������������������������������������������������������7
4�3 Temp Mode��������������������������������������������������������������������������������������������������������������������������������������7
4�4 Time Mode���������������������������������������������������������������������������������������������������������������������������������������8
4�5 Temperature Measurement ������������������������������������������������������������������������������������������������������������9
4�6 Change of Temperature Unit�����������������������������������������������������������������������������������������������������������9
4�7 Demagnetisation �����������������������������������������������������������������������������������������������������������������������������9
4�8 Power Level Selection���������������������������������������������������������������������������������������������������������������������9
5 Safety Features ����������������������������������������������������������������������������������������������������������������������������� 10
6 Electromagnetic Field and Personal Safety �������������������������������������������������������������������������������� 10
7 Troubleshooting ���������������������������������������������������������������������������������������������������������������������������� 11
8 Spare Parts ������������������������������������������������������������������������������������������������������������������������������������ 11

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›The operating instructions must be followed and kept in
a safe place at all times�
›The IHN010 device generates a magnetic field� People
wearing a pacemaker, especially if it is an older model,
should consult their doctor before operating the device
as it could impair the functioning of the pacemaker�
Electronic equipment such as wrist watches, memory
cards, monitors and displays, magnetic tapes, etc� may
also be affected�
›Always place the device on a non-metallic surface that is
stable and dry�
›Ensure that the ventilation slots are free at all times and
the device can draw in cold air through its base�
›The device must always be connected to an AC power
network with the correct voltage as indicated on the
type plate�
›Ensure that the device does not get wet and do not
expose it to high humidity levels�
›The device must not be immersed in water or any other
liquid�
›Do not operate the device in the vicinity of heat sources
and ensure that it is placed a sufficient distance away
from walls and flammable objects�
›The device must not be used in areas where there is a
risk of explosion�
›Do not activate the heating process if no rolling bearing
or other workpiece is in place�
›Avoid contact with hot workpieces� Wear the supplied
protective gloves when handling hot workpieces�
›Please ensure that you always use a power and
temperature level that is appropriate for the workpiece
in question to ensure that it is heated carefully and not
damaged�
›The device is intended for heating rolling bearings� The
manufacturer accepts no liability in the event of
inappropriate or incorrect usage�
›Regularly check the plug, connecting cable and heating
cone for wear and tear or damage� If you discover any
damage, send the device to your NSK partner for
inspection�
› Do not modify the device�
Safety Recommendations
1 Introduction
The IHN010 induction heater is designed for heating rolling bearings and other ferritic, circular workpieces�The heat causes
the workpiece to expand, which eliminates the need to use force during installation�A 90°C (194°F) temperature difference
between the bearing and shaft is sufficient to enable easy installation�At an ambient temperature of 20°C (68°F), the bearing
must therefore be heated to 110°C (230°F)�
1.1 Intended Use
The IHN010 portable induction heater has been designed to heat rolling bearings�Examples of acceptable workpieces include
bushings, shrink rings, pulleys, rings, etc�The IHN010 portable induction heater is primarily intended for on-site repairs and
rolling bearing replacements by service and maintenance staff�

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1.3 Distinguishing Feature
The distinguishing feature of the IHN010 induction heater is the fact that the workpiece can only be placed on the cone-shaped
workpiece support for heating� The energy transfer is contact-free, and is generated via the medium-frequency coil situated be-
low� The cone-shaped workpiece support creates an optimal magnetic field distribution in the rings of the rolling bearing, thereby
ensuring that heat is distributed homogenously� This design improves efficiency, resulting in lower power consumption and faster
heating, which significantly reduces the costs of heating the bearings� This special technology allows the device to be very light
weight and portable� In addition, the device is fitted with predictive temperature control (PTC)� For every heating process, the
temperature increase curve of the workpiece/rolling bearing is measured constantly, thereby optimising the heating perfor-
mance� This ensures that the target temperature is achieved quickly without overheating the rolling bearing�
1.2 Principle of Operation
The IHN010 generates a magnetic field in the medium
frequency range (approx� 25kHz), similar to an inductive hot
plate� The magnetic field induces a voltage targeted on the
inner ring of the workpiece� This creates eddy currents, which
efficiently heat the workpiece� As the heat in the workpiece is
generated by the current flow, all other parts of the induction
heater remain cold� The heating process is based on the prin-
ciple of eddy currents, so the workpieces to be heated should
be composed of ferritic (magnetic) metals� In case of doubt,
simply check the workpiece using the magnet of the tempera-
ture probe� This patented heating method enables fast, easy
and energy efficient heating of workpieces�
2 Description
The operation of the heater is controlled by the internal electronics in either of two modes�The operator can either select the desi-
red temperature of the bearing in TEMP MODE or set the length of time that the bearing will be heated in TIME MODE�The power
level can be adjusted in steps of 20% for slower heating of sensitive workpieces (for example, bearings with C1 or C2 clearance)�
2.1 Components
The IHN010 induction heater is comprised of a portable housing with integrated operating electronics and cone-shaped
workpiece support�A temperature probe can be attached for measuring and monitoring the temperature of the workpiece�
The mains cable is enclosed separately, as are protective gloves for safe handling of hot workpieces�All of the equipment
can be stored in the practical carrying case�

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2.2 Technical Data
IHN010
Voltage (± 9%): 1 ~ 110 – 240V / 50 – 60Hz*
Recommended circuit protection 10�5A circuit breaker (240V)
6�5A circuit breaker (110 – 115V)
Power consumption (maximum) 1�5kVA
Temperature control 20 – 180°C, in steps of 1°C
68 – 356°F, in steps of 2°F
Temperature probe K-type thermocouple with magnetic bracket
Power range 20 – 100%, in steps of 20%
Time mode 0 – 10 minutes, in steps of 0�1 minutes
Operating modes Automatic temperature or time mode
Demagnetisation, automatic Residual magnetism < 2A/cm
Overall dimensions 340 x 250 x 64mm (over cone 121mm)
Weight 3�5kg
Workpiece:
Inner diameter
Width
External diameter
20mm and above
Up to 60mm
Up to 160mm
Workpiece maximum weight Up to 10kg
Workpiece materials Ferritic metals (magnetic)
Maximum heating temperature < 180°C / 356°F
Authorisations, inspections CE
* Each bearing heater family has several voltage options�Please refer to the type plate on the heater body to determine the actual operating voltage�

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B
A
3 Preparation for Use
› Place the device horizontally on a stable, non-metallic surface�
› Ensure that the device’s ventilation slots are free at all times and that it can draw in cold air through its base�
› Connect the mains plug to a suitable power supply�
› The rolling bearing to be heated is placed horizontally in the centre of the IHN010 induction heater’s step-shaped support cone�
› If you are going to operate the device in TEMP MODE, connect the temperature probe with the helix cable to the left side of
the device� Make sure the polarity of the plug is correct�
› Use the holding magnets in the measuring head of the temperature probe as a quick and easy way of checking whether the
workpiece is made of ferritic metal (magnetic) and therefore can be heated optimally using the IHN010 induction heater�
› The magnetic measuring head of the temperature probe is placed on the inner ring of the rolling bearing or the innermost
point of the ring� The temperature probe is only used in TEMP MODE� When heating a workpiece in TIME MODE, the probe is
not required and does not need to be connected�
4 Operation
4.1 Function of Displays
A) The main display shows the selected heating time or heating temperature:
Display Indication
tTime in minutes
°C Temperature in degrees Celsuis
°F Temperature in degrees Fahrenheit

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B) The power display shows the selected power setting:
Display Indication
•20% power
•• 40% power
••• 60% power
•••• 80% power
••••• 100% power
4.2 Function of Buttons
Button Function
POWER Press to adjust the power in steps of 20%�The selected power is indicated on the power display�
MODE Press to switch between TIME MODE and TEMP MODE�
UP (+) Press to increase the value shown on the main display�
DOWN (-) Press to decrease the value shown on the main display�
START/STOP Press to start or stop the heater�The LED on the START/STOP button is lit when the heater is heating and
flashes during temperature measurement�
4.3 Temp Mode
› If the main display shows “t”, press MODE to select TEMP MODE� The main display shows °C or °F in TEMP MODE�
› The selected temperature is shown on the main display� The default temperature for bearings is 110°C (230°F)�
If a different temperature is desired, press UP or DOWN to adjust the temperature in steps of 1°C (2°F)�
› It may be desirable to heat bearings to temperatures above 110°C (230°F) for increased mounting time� To determine the
maximum permitted temperature, consult the specifications of the bearing manufacturer� Always ensure the bearing does not
lock due to an excessive expansion of the inner ring compared to the outer ring� See section 4�8�
› All Spherical Rolling Bearings (SRBs) are subjected to a special heat treatment�These bearings can be operated at temperatures
as high as 200°C (392°F)� Heating these bearings above 110°C (230°F) will not cause any damage as long as the bearing is
still able to rotate� For other bearings, a temperature of 125°C (257°F) must not be exceeded unless otherwise specified�
› Press POWER to select the power level� Use the guidelines in section 4�8 to determine the correct power setting�
› Press START/STOP to start the heater� The main display shows the current temperature of the workpiece�

8
› When the selected temperature has been reached, the heater demagnetises the workpiece, switches off, and generates
an acoustic signal for 10 seconds or until START/STOP is pressed�
› Press START/STOP to stop the heater�
› Always wear protective gloves and other appropriate protective equipment when removing the hot workpiece� NB: Risk of
burning� The workpiece may also be removed using suitable handling equipment�
› If the workpiece remains on the heater, the heater will start again when the temperature of the workpiece drops 10°C (18°F)�
Press START/STOP to stop the heater and demagnetise the workpiece�
› The device is now ready to heat another workpiece with the same settings�
4.4 Time Mode
› If the main display shows °C or °F, press MODE to select TIME MODE� The main display shows “t” in TIME MODE�
› Press UP or DOWN to adjust the time in steps of 0�1 minute�
› Press POWER to select the power level� Use the guidelines in section 4�8 to determine the correct power setting�
› Press START/STOP to start the heater� The main display shows the time that remains�
› When the time has elapsed, the heater demagnetises the workpiece, switches off, and generates an acoustic signal for
10 seconds�
› Press START/STOP to turn the induction heater off�
› Always wear protective gloves and other appropriate protective equipment when removing the hot workpiece� NB: Risk of
burning� The workpiece may also be removed using suitable handling equipment�
› Remove the workpiece using proper handling equipment�
› The device is now ready to heat the next workpiece with the same settings�

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4.5 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�The LED on the START/STOP button flashes during temperature measurement�Press START/STOP to cancel
temperature measurement�
4.6 Change of Temperature Units
Press MODE and UP at the same time to switch between °C and °F�The temperature unit setting remains the same even after
disconnection from mains power�
4.7 Demagnetisation
According to the eddy current principle, the work piece is automatically demagnetised at the end of the heating cycle�
4.8 Power Level Selection
When heating bearings with the IHN010, it is important that bearings with small internal clearance or slight preload are
heated slowly�Slow heating ensures that the bearing expands slowly, thereby preventing damage to the bearing�In
addition, it is possible that the ferrite cage and seals could be heated more quickly than the inner-ring, due to their low mass�
The shape, weight, size, and internal clearances all affect the amount of time required to heat a bearing�The large
variety of bearing types precludes the possibility of providing a specific power level setting for each type�Instead, the
following guidelines are provided:
For sensitive bearings (little internal clearance) the power must be reduced�
› Max� 20% for small bearings (positioned around the tip of the cone)
› Max� 40% for medium-sized bearings (positioned in the centre of the cone)
› Max� 60% for large bearings (positioned at the bottom of the cone)

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5 Safety Features
The IHN010 device is equipped with the following safety features:
›Power switch�
›Internal safety fuse for power electronics�
›Automatic overheating protection for the circuit breaker�
›Automatic current control for intermediate circuit and coil electricity�
›Automatic detection and power reduction if no workpiece is in place for heating�
›In the TEMP MODE the heater will switch off if the temperature probe does not register a temperature increase of 1°C (2°F)
every 15 seconds�To increase the interval to 30 seconds, press MODE and DOWN at the same time�
Bearing Cage Shield Power Max.Temp.
Deep groove ball
bearings
Steel Steel 20% 110°C / 230°F
Steel Plastic 20% 100°C / 212°F
Steel None 100% 110°C / 230°F
Other
bearings
Steel Steel 20% 110°C / 230°F
Brass Steel 20% 110°C / 230°F
Plastic Steel 20% 110°C / 230°F
Steel Plastic 20% 100°C / 212°F
Brass Plastic 20% 100°C / 212°F
Plastic Plastic 20% 100°C / 212°F
Steel None 100% 110°C / 230°F
Brass None 100% 110°C / 230°F
Plastic None 100% 110°C / 230°F
If the bearings are sealed on one side only, they must be placed on the device with the seal facing upwards�
In this arrangement, the power level of 100% can be selected�
For bearings with a steel cage or with seals, the power must be reduced�
The following table shows what power level to be selected�

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6 Electromagnetic Field and Personal Safety
During the heating function, the IHN010 unit generates a maximum magnetic flux density of less than 5�7µT at a distance
of half a meter away�The device is therefore within the range that applies to the household sector for induction cooktops�
Modern pacemakers are protected from such interference�Nevertheless, the manufacturers recommend that those using
pacemakers remain a minimum distance of 40cm from the induction heater�People with cardiac pacemakers should check
with their doctor about possible disrupting effects�
7 Troubleshooting
Display Fault Action
E01 E General system failure Return heater for repair
E02 E Memory failure Return heater for repair
E03 E Overheated coil Wait until the inductive coil cools
E04 E No workpiece in place Place workpiece on device
E05 E
Temperature increase of less than 1°C (2°F) every
15 seconds (or 1°C (2°F) every 30 seconds)
Check the temperature probe connection�If the connection
is OK, select the 30 second interval as described in section
5 or operate the heater in TIME MODE�
E06 E Temperature probe not connected (or defective) Check the temperature probe
E07 E Failure during current measurement Return heater for repair
E08 E Failure during communication with power printed
circuit board Return heater for repair
E09 E Overheated printed circuit board
Wait until the printed circuit board cools�Alternatively,
the PCB temperature will be displayed�The device can be
re-started at a temperature below 40°C (displayed as <40)�
E10 E Grid undervoltage detected Connect the device to another socket or
shorten the extension cord�
8 Spare Parts
Description Part Number
Spare temperature probe IHNP2SENSOR
Spare protective gloves IHNGLOVES
Spare portable soft case for IHN010 IHN025-B
A system fault will be indicated by an acoustic signal and one of the following fault codes on the main display:

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