Cartridge Heaters

Cartridge Elements offer an exceptionally high heating power in confined space. They are designed to heat up steel parts by inserting the cartridge into a close-fitting bore, machined into the steel part.

Cartridges are widely used in the Plastics Industry (hotrunner systems, moulds), the Packaging Industry (sealing, welding, and cutting), the Textile Industry (cutting, sealing, embossing) and in the Die-casting Industry (heating of the gooseneck).

Any cartridge heater can be supplied with built-in Thermocouple for applications where there is insufficient space to mount a separate temperature sensor.

nstallation

For good heat conduction between the cartridge and the tool to be heated a precise bore (ISO H7) is required.

For high power cartridges with a surface load in excess of 20 Watt / cm² a press fit is necessary.
Uneven bore surface or excessive tolerance of the bore results in hot spots, thus reducing the life span of the element.

Excessive length of the cartridge protruding out of the tool will lead to overheating of the exposed length and eventual failure. The distance between cartridge and external tool surface should be at least equal to the diameter of the cartridge.

We recommend the use of non-conductive anti-seize paste, to allow easier removal of the cartridge once they need to be replaced.