Nexthermal Coil/Cable Heaters

Nexthermal’s Constrictor keeps coil heaters pressed tightly about the nozzle for maximum heat transfer and accurate thermocouple reading. Made of a special metal alloy with a lower thermal expansion rate than the heaters’ stainless steel, it prevents coil heaters from loosening on the nozzle.

• Maximum holding
• Reusable
• Easy to install using C Clip Pliers
• Small space claim
• Less expensive than similar products
• Operates to 800 degrees F
• Resists oxidation
• Has a high tensile strength
• Constrictor sizes available for nozzle dimensions between 1/2 inch to 5.5 inches
• Constrictor thickness is 1 mm for nozzles up to 1.73 inches, and 2 mm thick for larger sizes

Nexthermal offers this versatile industry standard 2.5mm x 3.4mm coil heater with integrated type J or type K thermocouple options. Consistently chosen as the right solution with many of the industry leading injection molding OEMs. Build to order for custom configurations. Quick ship wind from straight stock for same to next day shipments.

• Custom wound from straight stock for same day shipments
• Flexible cold section
• Higher watt density than a cable heater
• Resistance wire centered for more repeatable heat profile
• Sealed transition head for moisture resistant applications available
• Thermocouple: Integrated type J or type K
• Profile: 2.5mm(.098”) Thick  X 3.4mm(.134”) Wide
• Maximum Sheath Temperature: 1382 deg. F
• Sheath Material: Cr-Ni Steel
• Maximum Total Straight Length: 3000mm (118.11”)
• Length Tolerance: Heated +/-1%; Unheated +/- 2.5%
• 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
• Standard Connection from Stock: 48” Teflon Leads.

Nexthermal has responded to industry calls for a thinner coil heater with integral thermocouple option by creating the 1.8mm x 3.2mm flat low profile coil heater. The 3.2mm width allows for greater watt density while the 1.8mm height allows OEMs to design drops closer to each other and, also, closer to coolant line.

• Build to order. Ships in 7 business days
• Flexible Cold section
• Sealed transition head for moisture resistant applications available
• Profile: 1.8mm(.071”) Thick  X 3.2mm(.126”) Wide
• Available with an external Type J or  K Thermocouple
• Maximum Sheath Temperature: 1382 deg. F
• Sheath Material: Cr-Ni Steel
• Maximum Total Straight Length: 3000mm (118.11”)
• Length Tolerance: Heated +/-1%; Unheated +/- 2.5%
• Maximum Voltage: 250VAC
• High Voltage Stability: 800 VAC
• Wattage Tolerance: +/-10% (contact hotset for special)
• Minimum Bending Radius: 8mm(.315”)
• Watt Density: 38.7 Watts/In2
• Insulation Resistance: >=5M Ohm @ 500 VDC (cold)
• Leakage Current: <= 0.5mA @ 250 VAC (cold)
• Length of Unheated Zone: 65mm(2.56”); 25mm(1.00”) Transition Head

The high performance and fast delivery alternative to a cast in brass heater. The ultimate in nozzle to nozzle repeatability.

• Can be built with a Micro, Mini, Flat, Low profile, or Round Nexthermal Coil Heater.
• Thermocouple not exposed to molten brass temperatures &ndash; Improved durability
• Faster responding heater due to eliminated air pockets than cast in brass
• Profile and heater orientation precisely repeatable
• OEM programs with 1 week delivery compared to traditionally 4-6 Week for cast in brass
• Potential for designing thin walled brass heaters to minimize OD impact

Nexthermal heater performance in space challenged applications, the mini coil heater has been proven a durable, small nozzle performer. External thermocouples can be wound in with the mini coil, located where you need it most.

• Proven durable heater for tight space constraints
• Wound with external TC
• Form in place heater
• Staggered or single transition head configurations
• Profile:1.8mm(.071”) Round
• Profile:1.3mm(.051”) x 2.3mm(.091”) Mini
• Profile:1.1mm(.043”) x 2.3mm(.091) Micro Mini
• Profile:1.0mm(.039”) x 1.6mm(.063”) Micro
• Thermocouple: External type J or type K
• Maximum Sheath Temperature: 1382 deg. F
• Sheath Material: Cr-Ni Steel
• Length Tolerance: -.040”
• Maximum Voltage: 250VAC
• High Voltage Stability: 800 VAC
• Wattage Tolerance: +/-2%; +/-10% (contact Nexthermal for special)
• Minimum Bending Radius: 3.18mm(.125”) for Round and Mini
• Minimum Bending Radius: 3mm(.1186mm(.236”) for Micro Mini and Micro
• Watt Density: 38.7 Watts/In2
• Insulation Resistance: >=5M Ohm @ 500 VDC (cold)
• Leakage Current: <= 0.1mA @ 253 VAC (cold)
• Length of Unheated Zone: Minimum 25.4mm(1.00”), Maximum 254mm(10.00”)
• Standard Connection : 72” Teflon Leads to 500 deg F

Hotlock® mini coil heaters utilize positive locking positioning rings. Installation is easy, with a twist of the end cap ring the heater is secured into position on the nozzle. No tools are needed to secure the heater and thermocouple onto the nozzle.

• Positive locking positioning
• Anti-Seize Coating for ease of removal
• Replaceable external thermocouple
• Profiled for more heat at the Tip
• Heater Sheath: CrNi Steel
• High Voltage Stability: 800VAC
• Insulation Resistance: >= 5M ohm at 500 VDC (Cold)
• Leakage Current: <= 0.5 mA at 250VAC (Cold)
• Wattage Tolerance: +/- 2%, +/- 4%, or +/-10%
• Maximum Voltage: 250V
• Standard Connection: 72” Teflon to 500 deg. F

Nexthermal axial clamp heaters feature a position locking cam system for ultimate positively and heat transfer performance. Excellent for high caution applications.

• Positive locking positioning
• Single allen screw adjustment for tightening and removal
• Mini coils in direct contact with nozzle
• Close matching of Ohms so that multiple axial clamp heaters can be controlled with a single thermocouple

The round coil heater has found new life in applications that can use form in place heaters. The round coil heater is innovatively incorporated into packaging, micro molding, and three dimensional form in groove heating applications. If you have a challenging object to heat, the round coil heater is an excellent alternative to consider.

For those who prefer round coil heaters, Nexthermal continues to produce the heater that started the trend toward high performance nozzle heating. Available in 3.0, 3.18 and 4.0 diameter sizes.

• Also used as a form in place heater
• Offers higher watt density than cable heaters
• Flexible Cold section
• 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 Nexthermal 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

The maxi coil heater is the most durable coil heater on the market. It can support larger diameters without the need of a pressed on sheath. The larger size allows for higher voltages and greater watt density. Excellent for large format injection molding and die casting applications.

• Robust 4.6×8.6 profile
• Thermocouple option
• 480V option
• Heater Sheath: SS321
• High Voltage Stability: 1250VAC
• Insulation Resistance: >= 5M ohm at 500 VDC (Cold)
• Leakage Current: <= 0.5 mA at 250VAC (Cold)
• Wattage Tolerance: +/-10%, +/-5% option
• Maximum Voltage: 480V