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1.3 Distinguishing Feature
The distinguishing feature of the IHN080/120 induction heater is the location of the workpiece at the same position on the
core as the inductive coil� This design improves efficiency, resulting in less power consumption and faster heating, which
reduces the cost to heat each bearing�
1.2 Principle of Operation
The IHN080/120 generates heat by means of a large electrical
current that is magnetically induced in the workpiece by a
coil within the heater� The high voltage, low current electricity
flowing through the large number of windings in the inductive
coil induces low voltage, high current electricity in the workpiece�
Because the workpiece has the electrical characteristics of a coil
with a single, short-circuited winding, the high current generates
heat within the workpiece� Because the heat is generated within
the workpiece, all of the heater components remain cool�
2 Description
The operation of the heater is controlled by the internal electronics in either of two modes� The operator can either select the
desired 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 IHN080/120 induction heater contains a U-shaped iron core with an inductive coil surrounding one of the vertical sup-
ports� Internal electronics control the operation of the heater� A removable yoke on the top of the vertical supports allows
the workpiece to be placed onto the heater� The top yoke of the IHN120 is mounted on a swivel� To accommodate smaller
workpieces, two smaller yokes are also provided� A temperature probe is included with the heater� Heat-resistant gloves are
also included�
