Demagnetisation; Power Level Selection - SKF TIH 030m Mode D'emploi

5.7 Demagnetisation

The workpiece is automatically demagnetised when heating is complete.
Demagnetisation will not occur if the power is interrupted or the main switch is switched
off. To use the TIH 030m for demagnetisation only, select TIME MODE and set the time to
0.1 minute (6 seconds).

5.8 Power level selection

When heating bearings with an induction heater, most of the heat will be generated in the
inner bearing race. The heat will then be transferred through the bearing. It is therefore
important that bearings with small internal clearance or slight preload are heated slowly.
Slow heating ensures that the bearing expands evenly, thereby preventing damage to the
bearing.
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 (including bearings with C1 or C2 internal clearance) or
bearings with brass cages, do not exceed 50% power.
• When using the small yoke, never exceed 50% power.
SKF TIH 030m 11