Micro Mini Coil Heater for Compact Hot Runner Applications

Micro Mini Coil Heater is a compact coil heating element designed for miniature hot runner nozzles, precision injection molds and small heating assemblies where installation space is limited. Its small cross-section and flexible structure provide reliable localized heating for compact applications.

Available in Φ1.8 mm and 1.3×2.3 mm cross-sections, this heater can be customized according to heating length, inner diameter, voltage, wattage and lead-wire requirements.

Micro Mini Coil Heater Features

• Compact Φ1.8 mm and 1.3×2.3 mm cross-sections
• Designed for miniature hot runner systems and limited installation spaces
• Minimum bending radius ≥6 mm
• Inner diameter tolerance of ±0.15 mm
• Maximum actual working temperature up to 500°C
• Maximum actual watt density up to 7.5 W/cm²
• Standard 300 mm lead length, customizable
• PTFE high-temperature lead wire with optional stainless steel braided sleeve
• K-type or J-type thermocouple available
• Custom heating length, voltage, wattage and lead configuration

Product Specifications

Product Type	Micro Mini Coil Heater
Cross-Section	Φ1.8 mm / 1.3×2.3 mm
Heating Length	20–150 mm
Wattage	80–600 W
Voltage	110V / 220V, custom 24–240V available
Inner Diameter Tolerance	±0.15 mm
Minimum Bending Radius	≥6 mm
Lead Length	Standard 300 mm, customizable
Lead Wire	PTFE high-temperature wire, optional stainless steel braided protection
Maximum Working Temperature	500°C
Maximum Watt Density	7.5 W/cm²
Thermocouple	K-type / J-type optional
Customization	Heating length, inner diameter, voltage, wattage and lead length

Applications of Micro Mini Coil Heater

The compact design makes this heating solution suitable for small hot runner components and precision applications where standard heating elements cannot fit.

• Miniature hot runner nozzles
• Precision injection molding systems
• Medical plastic component molds
• Electronic component molds
• Laboratory small heating equipment
• Compact heating assemblies with limited installation space

Why Choose This Compact Coil Design?

The small cross-section allows installation in narrow spaces while maintaining stable heating performance. Compared with larger coil configurations, the compact structure provides better flexibility for miniature hot runner systems and precision molds.

This design is suitable for applications requiring localized heating, fast response and accurate temperature control.

Custom Micro Mini Coil Heater Solutions

We manufacture custom heating elements according to customer drawings, samples and application requirements.

Customization options include:

• Custom cross-section
• Custom inner diameter
• Custom heating length
• Custom voltage and wattage
• Custom watt density
• Custom lead length
• Radial, tangential or axial lead-out options
• K-type or J-type thermocouple option
• PTFE lead wire or stainless steel braided protection
• OEM production according to drawings or samples

Send us your nozzle diameter, heating length, voltage, wattage and quantity for a custom quotation.

Coil Heater Series

Micro Mini Coil Heater is one configuration in the EaseWise coil heater product family. Different structures are selected according to installation space, flexibility requirements and heat transfer performance.

• 
  Round Coil Heater
  
  – flexible cylindrical heating solution for hot runner nozzles and heating sleeves.
• 
  Square Coil Heater
  
  – larger contact area for continuous-production injection molding applications.
• 
  Flat Rectangular Coil Heater
  
  – suitable for narrow installation spaces requiring efficient heat transfer.
• 
  Pressed-in Brass Coil Heater
  
  – rigid close-contact heating assembly for precision molds.
• 
  Hot Runner Spring Coil Heater
  
  – spring coil heating solution with brass sleeve and thermocouple for hot runner nozzle systems.
• 
  Coil Heater Series Comparison
  
  – compare different coil structures and applications.

Request a Micro Mini Coil Heater Quote

Need a compact heating solution for your hot runner or precision mold?

Send us your required cross-section, inner diameter, heating length, voltage, wattage and quantity. Our team will recommend a suitable configuration and provide a quotation.

Custom micro coil heating solutions available for miniature hot runner and precision molding applications.