Coil Heaters for Hot Runner Injection Molding

Coil heaters are compact industrial heating elements for injection molding, extrusion, hot runner systems, and other cylindrical heating applications. They provide efficient heat transfer for nozzles, manifolds, dies, and similar equipment. For hot runner applications, a hot runner coil heater can provide targeted heating around injection nozzles and other cylindrical components. EaseWise offers two sheath material options:
  • Stainless Steel Coil Heater — Suitable for high-temperature applications and environments involving corrosive polymers.
  • Brass Coil Heater — High thermal conductivity for fast heat transfer and efficient heating in molding applications.
Both options use NiCr 80/20 resistance wire and compact coil construction for stable heating and reliable service life. For specifications and custom options, see our Coil Heater product specifications and customization options.
stainless steel heating element
Stainless steel coil heaters are the workhorse of hot runner systems. As a hot runner heating coil, they provide efficient, targeted heating around injection nozzles and other cylindrical components. With SS304 or Inconel sheath options, they provide robust protection against aggressive resins and sustained high-temperature operation up to 800°C.
brass coil heater
Brass coil heaters are purpose-built for maximum thermal conductivity. The brass sheath transfers heat faster than stainless steel, ideal for high-speed molding cycles, thin-wall packaging, and PET preform production.

Stainless Steel Coil Heaters

Stainless steel coil heaters are suitable for applications requiring durability, corrosion resistance, and stable high-temperature performance. SS304 or optional Inconel sheaths provide protection in demanding heating environments.

Applications

  • Injection molding nozzle and manifold heating
  • Automotive and precision plastic parts molding
  • Closure cap and PET bottle production
  • Medical consumable molding
  • Packaging film sealing equipment
  • Industrial dies and cylindrical equipment

Key Features

  • Suitable for continuous thermal cycling
  • Fast heating response
  • Uniform heat distribution
  • Corrosion-resistant stainless steel sheath
  • Custom OEM configurations available

Brass Coil Heaters

Brass coil heaters provide high thermal conductivity and fast heat transfer for injection molding, PET preforms, packaging, and other applications requiring rapid temperature response.

Key Benefits

  • High Thermal Conductivity — Efficient heat transfer for faster heating.
  • Fast Temperature Recovery — Supports stable heating during rapid production cycles.
  • Cost-Effective — Suitable for high-volume production.
  • Compact Design — Fits cylindrical surfaces and limited installation spaces.

Typical Applications

  • Hot runner nozzle heater applications
  • PET preform production
  • Packaging injection molding
  • Plastic housing molding
  • Thin-wall injection molding
  • Valve gate runner temperature control

Technical Specifications

Parameter SS Coil Heater Brass Coil Heater
Max Operating Temp 800°C 800°C
Wattage 50W – 6KW 50W – 6KW
Voltage 110V / 220V / 230V / 380V / Custom 110V / 220V / 380V / Custom
Heating Wire NiCr 80/20 NiCr 80/20
Insulation High purity MgO powder High purity MgO powder
Sheath SS304 / Inconel (optional) Brass
Lead Type SS braided / Teflon / Custom SS braided / Teflon / Custom
Diameter Custom according to equipment and heating requirements Custom according to equipment and heating requirements

Request a Quote

Tell us your diameter / width / watt density / voltage. We reply within 12 hours.

Amy: +86 18883188154 | amy-easewise@tzheater.com
Hanna: +86 17351636811 | hanna-easewise@tzheater.com

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Frequently Asked Questions

These heaters are used for hot runner injection molding, manifold heating, nozzle heating, and precise plastic melt temperature control.

SS coil heaters offer higher corrosion resistance and are suitable for aggressive resins. Brass coil heaters provide faster heat transfer and are ideal for high-speed molding cycles.

Yes, we customize diameter, wattage, voltage, lead termination, and sheath material based on your hot runner system specifications.

Both SS and Brass coil heaters can operate up to 800°C.

Standard models: 3–7 days. Customized orders: 7–12 days.