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Round Coil Heaters

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Nexthermal continues to support round coil heaters, that revolutionized the injection molding industry in 1980, for nozzle heating applications. The compaction and flexibility of the round coil heaters are core attributes of this time proven technology. Emerging applications of the round coil heater include pressed in brass for nozzle heating and form in place for plate heating and three dimensional heating.

Nexthermal round coil heaters are available in 3.0mm, 3.18mm, 3.2mm, and 4.0mm diameter sizes.

For coil heaters directly on the nozzle or with an outer diameter sheath Nexthermal recommends next generation flat coil heater technology.
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The Nexthermal Advantage

Also used as a form in place heater
Offers higher watt density than cable heaters
Flexible Cold section
Standard Lead Time 7 business days (Shorter lead times possible)

Technical Data

Technical DataProfile: 3.0mm(.118”) Round
Profile: 3.18mm(.125”) Round
Profile: 3.2mm(.126”) Round
Profile: 4.0mm(.157”) Round
Thermocouple: Integrated type J or type K
Maximum Sheath Temperature: 1382 deg. F
Sheath Material: Cr-Ni Steel
Maximum Total Straight Length: 3000mm (118.11”)
Length Tolerance: Heated +/-2.5%; Unheated +/- 5%
Maximum Voltage: 250VAC
High Voltage Stability: 800 VAC
Wattage Tolerance: +/-10% (contact hotset for special)
Minimum Bending Radius: 6.35mm(.250”)
Watt Density: 38.7 Watts/In2
Insulation Resistance: >=5M Ohm @ 500 VDC (cold)
Leakage Current: <= 0.1mA @ 253 VAC (cold)
Length of Unheated Zone: 65mm(2.56”); 25mm(1.00”) Transition Head

Applications

Low profile Packaging Jaws
Small Manifold Heating
Plastic Injection Molding

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Round Coil Heaters