Introduction; Intended Use; Principle Of Operation - simatherm IH 210 Manual De Instrucciones

1

Introduction

The simatec IH 210 induction heater is designed to heat bearings that are
mounted with an interference fit onto a shaft. The heat causes the bearing
to expand, which eliminates the need to use force during installation.
A 90°C (194°F) temperature difference between the bearing and shaft is ge-
nerally sufficient to enable 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 IH 210 has been designed to heat rolling bearings. However, other
metal workpieces that form a closed circuit can also be heated. Examples
of acceptable workpieces include bushings, shrink rings, pulleys, and
gears. All bearings that fit over the inductive coil and between the vertical
supports with the sliding yoke in place can be heated using the IH 210.
In addition, smaller bearings can be placed over either of the two standard
yokes. See the illustrations at the beginning of this manual for examples.
1.2

Principle of operation

The IH 210 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.
20 Induction Heater IH 210 © simatec ag