Micro-cartridge heaters

The micro-cartridge sleeve is non-rectified. Please consult us for available dimensions.

For very small diameters (2.8 to 4 mm), the temperature must not exceed 500°C. For larger diameters, the constraints are the same as for high-density cartridges (800°C).

The connection for micro-cartridges is made with a Teflon-insulated conductor approximately 100 mm long. The bottom of the cartridge is hermetically sealed.

Important :

All micro-cartridges are custom-made to customer specifications.

Under certain conditions, it's possible to supply 24 V cartridges with 12 or 42 V.

Please contact us for further details.

Above 20 W/cm², excellent heat transfer must be ensured.

The maximum admissible current is 8 Amperes.

Recommendations :

Our cartridge heaters are carefully tested, piece by piece. However, their service life depends essentially on the conditions of use.

Here are 10 important points to keep in mind, to ensure that your machine works correctly.

• Cartridges should be placed in calibrated holes using a reamer.
• Service life also depends on the load, so it's better to have more cartridges, but less powerful ones.
• The entire cartridge must be in contact with the metal (no lack of metal in the bore), with only the ceramic head protruding.
• If possible, the hole should be through-hole to make it easier to insert or remove the cartridge. At the end, the through hole can be smaller in diameter.
• Our heat-resistant anti-friction products make cartridge assembly and disassembly easier. It also improves heat transfer, but be careful not to apply it to the ceramic head or wires.
• Electrical connection cables must be protected against fluids such as water, lubricant, oil, plastic, etc., which could cause leakage currents or ignition at the conductor output.
• Those cables must be protected against vibration and shock at the cartridge output, to prevent damage.
• To avoid excessive thermal inertia, which could cause the heater to overheat, the temperature control sensor should be positioned approximately 10mm from the cartridge.
• When using several cartridges next to each other, the distance between them must be at least one diameter.
• Cartridge heaters must be stored in absolutely dry conditions, or in hermetically sealed plastic bags.