Cartridge Heater
A cartridge heater is a cylindrical heating element designed to be inserted into a drilled hole with a tight tolerance. It is used to provide direct heat to metal or other surfaces and is commonly found in industries such as plastics, molding, packaging, and automotive.
The cartridge heater operates on the principle of heat conduction, where the internal heating element converts electrical energy into heat, which is then transferred to the surrounding medium.
General Specifications of Cartridge Heater:
| Specification | Typical Details |
|---|
| Voltage | 110V / 220V / 380V (customizable) |
| Power Rating | 50W up to 3000W+ (depending on size and use) |
| Diameter | 6 mm – 25 mm (or larger, depending on design) |
| Length | 20 mm – 500 mm+ |
| Sheath Material | Stainless Steel 304 / 316 |
| Lead Wire Type | Fiberglass insulated, silicone, or braided metal |
| Maximum Operating Temperature | Up to 750°C (depending on construction) |
| Dimensional Tolerance | ±0.02 mm – ±0.1 mm (for press fit in hole) |
| Optional Temperature Sensor | Integrated thermocouples (Type J or K) |
| Heating Type | Resistive internal heater |
| Ingress Protection | IP65 (with sealed cable and sheath) |
| Electrical Insulation | Magnesium oxide (MgO) powder inside for insulation |
Advantages of Cartridge Heaters:
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High efficiency heat transfer.
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Precision sizing for press-fit holes.
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Suitable for high temperature applications.
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Long service life if used correctly.
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Customizable for specific industrial applications.
Common Applications: