Induction heating is a non-contact, safe method for precisely heating electrically conductive materials, such as bearings and other metals. The bearing heating process changes the physical properties of the metal and allows the material or work piece to harden, soften, or bond metals relevant to for instance, gears, shafts, and axles.
Bearing induction heating lets users properly fit bearings onto a shaft. The tool creates an oscillating electrical current that causes the bearing or metal to heat when placed in the device’s magnetic field. Eddy currents make the bearing heat up and expand. Once the induction bearing heater reaches the correct temperature, the operator removes the hot bearing with safety gloves and places it on the shaft. As it cools down, the bearing shrinks to fit it.
The eddy currents caused by induction heating get their name from the circular swirls, called eddy currents, that develop when a river hits resistance, such as a rock.