3D Printer Heating Cartridges 12V 24V

High Density Cartridge Heaters for Industrial Heating Applications

Hotbox manufactures premium cartridge heaters designed for high-temperature industrial heating where fast heat transfer, compact size, and precise temperature control are essential.

Our cartridge heaters are widely used in:

 • Plastic Injection Molding

 • Packaging Machinery

 • Die Casting

 • Medical Equipment

 • 3D Printing

 • Food Processing Equipment

 • Semiconductor Industry

 • Laboratory Equipment

 • Hot Runner Systems

 • Metal Molds

With over 20 years of manufacturing experience, we provide OEM & ODM customized cartridge heaters for customers worldwide.

Why Choose Our Cartridge Heaters?

Excellent Heat Transfer

High watt density design delivers rapid heating while maintaining excellent thermal efficiency.

Long Service Life

Premium NiCr resistance wire and high purity MgO insulation ensure long operating life.

Uniform Heating

Optimized internal structure minimizes hot spots and improves temperature consistency.

High Temperature Capability

Continuous operating temperatures up to 800°C (1472°F) depending on application.

Custom Manufacturing

Available in almost unlimited dimensions, voltages, wattages, lead exits, and mounting options.

Product Features

Premium Materials

High Watt Density Available watt density:  • Standard Density  • Medium Density  • High Density  • Ultra High Density Maximum Watt Density: Up to 10 W/cm² (application dependent)   Precise Manufacturing Every cartridge heater is manufactured using precision equipment to ensure:  • Tight diameter tolerance  • Superior concentricity  • Better thermal contact  • Faster heat transfer  • Reduced energy consumption

Technical Specifications

Available Configurations

We provide numerous customized configurations.

Straight Lead Cartridge Heater

Ideal for standard applications.

Right Angle Lead Cartridge Heater

Perfect for limited installation spaces.

Internal Thermocouple Cartridge Heater

Provides accurate temperature monitoring directly inside the heater.

Threaded Cartridge Heater

Easy installation with secure positioning.

Flanged Cartridge Heater

Designed for applications requiring positioning control.

Swaged High Density Cartridge Heater

Maximum heat transfer with long service life.

Applications

Our cartridge heaters are widely used in:

Plastic Industry

 • Injection molds

 • Blow molding

 • Extrusion machines

 • Hot runner systems

Packaging Industry

 • Heat sealing equipment

 • Labeling machines

 • Shrink packaging

Metal Industry

 • Die casting molds

 • Hot plates

 • Metal forming

Medical Equipment

 • Sterilization devices

 • Analytical instruments

Food Processing

 • Heating plates

 • Food packaging equipment

Electronics

 • Semiconductor equipment

 • Battery manufacturing

Internal Construction

Typical internal structure includes:

 • Stainless Steel Sheath

 • NiCr Heating Wire

 • High Purity Magnesium Oxide

 • Ceramic Core

 • Lead Wire

 • High Temperature Seal

This design ensures:

 • Excellent insulation

 • Uniform heating

 • Fast response

 • Long service life

Custom Manufacturing Options

We manufacture fully customized cartridge heaters.

Customization includes:

 • Diameter

 • Length

 • Voltage

 • Wattage

 • Heating Zone

 • Unheated Zone

 • Lead Length

 • Lead Direction

 • Lead Protection

 • Thermocouple Type

 • Mounting Thread

 • Flange

 • Surface Finish

 • Special Materials

How to Select the Right Cartridge Heater

Before ordering, please provide:

 • Hole diameter

 • Working temperature

 • Supply voltage

 • Required power

 • Installation direction

 • Heating medium

 • Operating environment

 • Continuous or intermittent operation

Our engineers will recommend the optimal solution.

Quality Assurance

Every cartridge heater undergoes:

 • Resistance Test

 • High Voltage Test

 • Insulation Resistance Test

 • Dimension Inspection

 • Appearance Inspection

 • Functional Test

100% tested before shipment.

Advantages of Hotbox Cartridge Heaters

✔ Fast Heat Transfer

✔ Uniform Temperature

✔ Long Service Life

✔ High Watt Density

✔ Custom Design

✔ Competitive Factory Price

✔ Fast Delivery

✔ OEM & ODM Available

✔ Global Export Experience

Frequently Asked Questions

What is a cartridge heater?

A cartridge heater is a cylindrical electric heating element inserted into drilled holes in metal components to provide localized, high-efficiency heating for industrial equipment.

What temperature can a cartridge heater reach?

Standard cartridge heaters can operate up to approximately 800°C (1472°F), depending on the sheath material, watt density, and installation conditions.

How do I choose the right watt density?

Watt density depends on the heated material, operating temperature, and heat dissipation. Excessive watt density may shorten service life, while insufficient watt density can lead to slow heating. Our engineering team can recommend the optimal design based on your application.

What is the recommended fit between the heater and the hole?

For the best heat transfer, the heater diameter should typically be 0.02–0.08 mm smaller than the mounting hole, ensuring a snug fit without making installation difficult.

Can cartridge heaters be customized?

Yes. We offer fully customized solutions including diameter, length, voltage, power, sheath material, lead exit, built-in thermocouple, threaded fittings, flanges, and special heating zones.

How long does a cartridge heater last?

Service life depends on operating temperature, watt density, installation quality, and duty cycle. Properly selected and installed high-density cartridge heaters can operate reliably for thousands of hours in industrial applications.

Why Buy From Hotbox?

Hotbox specializes in industrial electric heating solutions with extensive OEM & ODM manufacturing experience. We provide:

 • Factory-direct pricing

 • Custom engineering support

 • Strict quality control

 • Fast production

 • Worldwide shipping

 • Responsive technical assistance

Whether you need a standard cartridge heater or a fully customized design, our engineering team is ready to help.