Stiefel Induction Heaters: Energy-Efficient Solutions Since 2013

Induction bearing heaters are the safe, efficient, and controlled method for mounting bearings, gears, and other interference-fit components onto shafts. The principle is based on the thermal expansion of metal: heating the bearing causes its inner ring to expand, creating a temporary clearance that allows it to slide easily onto the shaft. Upon cooling, the bearing contracts, forming a secure and tight fit. This method is vastly superior to using force (hammering or pressing), which can damage the bearing races and rolling elements. Stiefel Combustion's bearing heaters are designed with features to prevent damage to the bearing itself. They generate a uniform magnetic field to ensure even heating, avoiding the creation of hot spots that can degrade the bearing's temper and hardness. Many models include demagnetization cycles to remove any residual magnetism induced during the heating process, which is critical for proper bearing operation. These systems range from portable units for maintenance workshops to large, automated stations for production lines. They save time, reduce physical effort, and prevent costly bearing failures. For a safe and reliable bearing mounting solution, please contact us to find the ideal induction bearing heater for your application.