High-Density Cartridge Heater for Rapid Industrial Heating

High-Density Cartridge Heater is designed for rapid heating, high heat transfer and demanding industrial applications where high power output is required in a compact heating element. Compared with a standard cartridge heater, its higher watt density allows faster heat-up and concentrated heating in close-fit installations.

Our high-density cartridge heaters are available in stock sizes and can also be custom-made according to your required diameter, heated length, voltage, power and watt density.

For the complete heating element range, visit our
Cartridge Heater
product page.

High-Density Cartridge Heater Specifications

These heating elements can be configured according to the electrical, mechanical and temperature requirements of the equipment.

Item	Specification
Product Type	High-Density Cartridge Heater
Outer Diameter	6mm – 20mm standard range, custom sizes available
Heated Length	Custom-made according to application requirements
Voltage	12V – 480V, common 220V / 380V
Power	Custom-made according to diameter and heated length
Watt Density	18 – 35 W/cm², depending on design and application
Sheath Material	SUS304 / SUS321 / SUS316L / Inconel 600
Insulation	High-purity Magnesium Oxide (MgO)
Lead Wire	High-temperature fiberglass wire / silicone wire / metal braided sleeve
Maximum Working Temperature	Up to 760°C depending on heater construction and sheath material

High-Density Heating Performance

This type of cartridge heater can provide a watt density of approximately 18–35 W/cm², allowing faster heat-up and higher localized heating performance than conventional heating elements.

The actual maximum watt density depends on the heater diameter, heated length, installation fit, material being heated and operating conditions. Proper installation and heat transfer are important when operating at higher watt densities.

Rapid temperature rise
High power output in a compact heating element
Suitable for close-fit metal bore installations
Designed for demanding short-cycle heating applications
High-purity MgO insulation for efficient heat transfer
Custom watt density available according to application requirements

For general industrial heating requirements where extremely high watt density is not necessary, our
Standard Cartridge Heater
may be a more suitable option.

Stock High-Density Cartridge Heater Sizes

The following sizes are available as standard stock models. Custom voltage, power, diameter and heated length are also available.

Diameter (mm)	Heated Length (mm)	Voltage	Power (W)	Watt Density (W/cm²)	Stock Status
Φ6	60	220V	220	19.5	Stock
Φ6	80	220V	280	18.5	Stock
Φ8	80	220V	380	18.8	Stock
Φ8	100	220V	480	19.1	Stock
Φ8	120	220V	580	19.2	Stock
Φ10	100	220V	600	19.1	Stock
Φ10	120	220V	750	19.8	Stock
Φ10	150	220V	900	19.1	Stock
Φ12	100	220V	850	22.5	Stock
Φ12	120	220V	1000	22.1	Stock
Φ12	150	220V	1200	21.2	Stock
Φ12	200	220V	1450	19.2	Stock
Φ16	150	220V	1600	19.8	Stock
Φ16	200	220V	2100	20.8	Stock

Custom High-Density Cartridge Heaters

In addition to stock sizes, we manufacture custom heating elements according to customer drawings, samples or application requirements.

Custom outer diameter
Custom heated length and overall length
Custom voltage and power
Custom watt density
Straight or special lead-out configurations
SUS304 / SUS321 / SUS316L / Inconel 600 sheath options
Custom lead-wire length and wire type

For applications requiring specific dimensions, electrical specifications or production quantities, see our
Custom Cartridge Heater OEM Solutions.

Send us your required diameter, heated length, voltage and power for a custom quotation.

Applications

These compact heating elements are suitable for equipment requiring fast localized heating and high power output.

Hot runner nozzles and hot runner mold systems
High-speed injection molds and precision mold inserts
Die-casting nozzles and hot stamping tools
Heat-sealing jaws and high-speed packaging machinery
Plastic extruder local heating
Short-cycle rapid heating equipment
Automation machinery requiring fast temperature rise
Test fixtures and laboratory rapid-heating blocks

For applications requiring a smaller heating element and limited installation space, see our
Miniature / Micro Cartridge Heater.

Other Cartridge Heater Configurations

Different equipment layouts may require different cartridge heater constructions. Our product range includes several configurations for specific installation requirements.

L-Shape Cartridge Heater
for applications requiring a special lead or terminal arrangement.
Threaded Cartridge Heater
for applications requiring threaded mounting or positioning.
Flange-Mount Cartridge Heater
for applications where flange mounting provides a more convenient installation method.

Selecting the correct configuration helps improve installation fit, heat transfer and serviceability.

High-Density Cartridge Heater vs Standard Cartridge Heater

The main difference is the heating power that can be delivered over the heated surface. High-watt-density designs are intended for applications requiring faster heat-up or concentrated heating, while standard configurations are suitable for more general heating requirements.

If you need a conventional configuration for general industrial heating, visit our
Standard Cartridge Heater
page.

Cartridge Heater Selection and Technical Resources

Choosing the correct heating element requires consideration of heater construction, material, watt density, installation fit and operating temperature. Our technical articles provide additional information for equipment designers and purchasing teams.