Hot Runner Coil Heaters
Sheath Material: Cr Ni-Steel
Thermocouple: J-type(standard) ;K-type
Insulation Material: MgO
Length Tolerance(straight): 5%
Resistance Wire: NiCr 80-20
Wattage Tolerance: 5%
Resistance Tolerance: 5%
Max. Sheath Temperature: 650°C
Unheated Length: 35mm(standard)
Die Electrical Strength: 800V A/C
Insulation: >5MW
Dimensional Tolerance: Coil I.D + 0.1~0.2mm; Coil length +1mm
Cross section: 2.2 × 4.2 mm, 3 × 3 mm, 3 × 2 mm, 3.5 × 3.5 mm, 4 × 2 mm
Inner diameter: 8 mm – 100 mm
Height: 4 mm – 350 mm
Voltage: 12 V – 450 V
Power: 50 W – 3000 W
Built-in thermocouple: Type J / Type K
Length: Customized (standard length: 1000 mm)
Coil heaters feature high operating temperatures, rapid heat-up performance, and precise, uniform heating. They offer a long service life and support zoned automatic temperature control. With excellent thermal conductivity, the internal heating element is protected from damage, while the outer sheath can be reused. Each heater is annealed to ensure flexibility, allowing it to be formed into virtually any shape. Hot runner coil heaters with integrated thermocouples are also available.
Coil heaters are a type of tubular electric heating element. They are widely used in industries such as aerospace, petrochemical, rubber, and plastics manufacturing. These heaters are suitable for heating both static and flowing media, including air, water, oil, nitrates, alkaline solutions, and other liquids. They can also be applied for light metal melting and metal mold heating. Featuring a simple structure, long service life, high thermal efficiency, and stable, safe operation, coil heaters are a reliable heating solution for industrial applications.
Why Choose Coil Heaters?
High power density – rapid heat-up in compact spaces
Uniform & precise heating – stable temperature, fewer defects
Flexible & customizable – easily formed to fit tight installations
Long service life – durable design for continuous operation
High thermal efficiency – lower energy consumption
Built-in thermocouple option – J / K type for accurate control
OEM / ODM available – tailored solutions for your application