A light and compact solution for bearing heating Portable induction heater TMBH 5 The SKF Portable induction heater TMBH 5 is designed for use in maintenance, to heat roller bearings that are mounted onto a shaft with an interference fit. Heat causes the bearing to expand, which removes the need to use force during installation. The TMBH 5 generates a temperature difference between bearing and shaft – enough to enable installation. It can also be used to heat other ring-shaped, metallic components. A reduced power setting allows sensitive components to be heated more slowly.