INDUCTION BEARING HEATERS.

What an induction bearing heater does

An induction bearing heater (also called a bearing induction heater or bearing heating machine) expands a bearing, gear, coupling or ring by heating it, so the part slides onto the shaft without force. The heater generates an electromagnetic field that heats the workpiece itself, not the surrounding air. Compared with an oven, hot plate or oil bath, heating is faster, cleaner and easier to control: no open flame, no oil, and a set temperature that is held automatically.

TM Induction Heating has designed and built induction heaters in Harderwijk, the Netherlands, since 1992. More than 50,000 induction heaters have been sold worldwide, and many are still in use today, from small workshops to wind turbine and railway maintenance.

The TM range at a glance

Standard EASYTHERM and SURETHERM induction bearing heaters cover workpieces up to 1,600 kg. For fixed parts and dismounting, the EXTRATHERM mid-frequency generators with flexible inductors heat components that cannot be placed on a heater. For parts up to 100 tonnes, TM builds custom PROTHERM systems.

EASYTHERM and SURETHERM bearing heaters control the temperature with a sensor on the workpiece and demagnetise the part automatically after heating. TM Induction Heating is ISO 9001:2015 certified and supports its heaters through distributors in 35 countries and its own repair and calibration programme.

EASYTHERM: programmable workshop heaters

Five models for daily assembly and maintenance work, from the compact EASYTHERM 1 for bearings up to 10 kg to the EASYTHERM 30 for workpieces up to 300 kg. Temperature mode uses a sensor on the workpiece and supports 0 to 240 °C; the larger models add a time mode for repeatable production work. EASYTHERM heaters have been in use since 2004, and many early units are still in daily service. See the EASYTHERM series.

SURETHERM: dual-sensor, tension-free heating

SURETHERM heaters use TM’s original 2-sensor technology: a second sensor measures the temperature difference between the inner and outer ring, so the bearing is heated evenly without internal tension. The range runs from the SURETHERM 5X (25 kg) to the SURETHERM PRO 6X for parts up to 1,600 kg, with touchscreen control and data export. See the SURETHERM series.

Beyond standard bearing heaters

EXTRATHERM generators heat with a flexible inductor that wraps around the part: for dismounting bearings, couplings and rings on site, or for components that cannot be moved. PROTHERM systems are engineered for one specific job, for example stator housings, crusher rolls, wind turbine bearings or railway wheels.

Proven in the field

Read how customers use TM heaters in our case studies: from assembling electric motors and dismounting train wheel bearings to wind turbine maintenance.

Yokes, trolleys and accessories

Each heater comes with a set of yokes. Extra yokes, pivoting yokes, temperature sensors, carrying cases and trolleys are available in the eStore.