Cartridge Heater is a tube-shaped, industrial heating element that can be inserted into drilled holes. Cartridge heaters provide localized and precise heating and are commonly used in the heating process industry. Typically, cartridge heaters are used to heat a metal block from the inside and can be custom manufactured to a specific watt density based on the requirements of the application.

A cartridge heater consists of resistance coil wound around a ceramic core that is surround by dielectric and encased in a metal sheath. Powered heat transferred through the coil to the sheath causes the sheath to heat up. This heat is then transferred to the inside metal part requiring heat.

Cartridge heaters can operate at low, medium, and high watt densities. They are designed to withstand a working temperature of up to 1400°F. However, the optimal operating temperature will depend on the application for which you are using the cartridge heater. It’s also important to note that there are multiple factors, such as the cartridge heater watt density, the tightness of the cartridge inside the hole, and the thermal conductivity of the material being heated, that can impact the actual temperature of an industrial heater and the monitored temperature of a material during the heating cycle. For high temperature applications, such as those above 1000°F, incoloy sheathes are recommended for maximum heat transfer and durability.

1. Heating gases and liquids
2. Twin screw extruder
3. Plastic molding
4. Hot runner molds
5. Hot stamping
6. Bottle blowing machine