Freek Heat Transfer System (patent)
The Freek heat transfer system especially addresses manufacturers and users who operated their hotrunner nozzles with cast-in heaters in the past and would like to stick to their engineering know-how without paying the high price of this former heater design. The standard material of our patent pending Freek heat transfer alternative is brass, with or without coating, basically with a slit. The slit allows the assembly of an external bendable thermocouple and facilitates the disassembly, e.g. in case of a revision and can be coiled over. This is not possible at competitor's solutions. Freek's tight coiling at the heater's ends provides a maximum possible power concentration (patented).
Design | Freek |
System | Heat transfer |
Function | Toleranced fit |
Heater | MicroCoils 1,0 x 1,6 / 1,3 x 2,3 mm other heaters, also HotCoils possible |
Dimension | Ø min. 8 mm, L freely selectable |
Standards | see tables "MicroCoil" / "HotCoil" (other wattage possible) |
HotMicroCoil with Reflection Tube
Characteristics of our HotMicroCoils with reflection tube are easy mounting and variable heat distribution. Because of its direct touch and toleranced fit, the heater allows a very good heat transmission to the nozzle. In all our HotMicroCoils with reflection tube the assembly of a thermocouple is possible and recommended for bigger diameters and power.
Design | Freek |
System | Reflection tube |
Function | Toleranced fit |
Heater | MicroCoils 1,0 x 1,6 / 1,3 x 2,3 / 1,4 x 2,4 / 1,8 x 3,2 mm HotCoils 2,2 x 4,2 / 3,0 x 3,0 mm |
Dimension | Ø max. 90 mm, L freely selectable |
Power | Standards > see tables "MicroCoil" / "HotCoil" (other wattage possible) |
HotCoil with Clamp Band
The HotCoils with clamp band are a highly demanded and very flexible clamping system, especially for heating larger nozzles and bushings with high power. The size-variable customizable clamp bands counteract the heating's thermal-related "lifting ambition" during heat-up and thus effectively prevent a possible critical overheating. For an even better protection all HotCoil heating elements can also be provided with an integrated thermocouple. As alternative to our standard clamping mechanism with welded clamping elements a space-saving lug clamping mechanism can be supplied.
Design | Freek |
System | Clamp band |
Function | Screw clamping |
Heater | HotCoils 2,2 x 4,2 / 3,0 x 3,0 / 4,0 x 6,0 mm |
Dimension | Ø x L freely selectable (≥ Inside Ø 25 mm) |
Power | Standards > see tables "HotCoil" (other wattage possible) |
Two Screw Clamp Band (FB)
Besides its own systems Freek also manufactures original Rosemount-systems that can also be used as "Husky-replacement heater" (see spare part cross-reference list). For example the two screw clamp band (FB) and the axial clamp band (FE). Both systems can be supplied with MicroCoils in "Rosemount style" (Ø 1,4 mm) as well as MicroCoils in "Freek style" (1,3 x 2,3 mm).
Design | Rosemount |
System | Clamp band FB |
Function | Two-screw clamping |
Heater | MicroCoils 1,3 x 2,3 mm Ø 1,4 mm (Rosemount style) |
Dimension | Ø 19,05 x 25,40 mm (Ø 3/4" x 1") Ø 19,05 x 30,50 mm (Ø 3/4" x 1,20") Ø 22,23 x 30,50 mm (Ø 0,875" x 1,20") Ø 22,40 x 30,50 mm Ø 22,55 x 30,50 mm |
Power | 250W, 328W at 230V (other possible) |
Power tolerance | ±2% (possible) |
Axial Clamp Band (FE)
Besides its own systems Freek also manufactures original Rosemount-systems that can also be used as "Husky-replacement heater" (see spare part cross-reference list). For example the two screw clamp band (FB) and the axial clamp band (FE). Both systems can be supplied with MicroCoils in "Rosemount style" (Ø 1,4 mm) as well as MicroCoils in "Freek style" (1,3 x 2,3 mm).
Design | Rosemount |
System | Clamp band FE |
Function | Axial clamping |
Heater | MicroCoils 1,3 x 2,3 mm Ø 1,4 mm (Rosemount style) |
Dimension | Ø 19,05 x 25,40 mm (Ø 3/4" x 1") Ø 19,05 x 30,50 mm (Ø 3/4" x 1,20") |
Power | 149W, 268W at 240V (other possible) |
Power tolerance | ±2% (possible) |
Locking System
Our Locking System provides a quick, easy and reliable clamping of the heating element on the nozzle to be heated. It facilitates an effective heat transfer, as the inside sheath is pressed to the nozzle with a high level of precision creating an interference fit. Due to the method of construction of the lock, installation is possible in the restrictive space of small cavities. The lock can be operated quickly and efficiently with simple readily available tools.
Design | Freek |
System | Clamp band |
Function | Axial clamping |
Heater | MicroCoils 1,0 x 1,6 / 1,3 x 2,3 mm other heaters, also HotCoils possible |
Dimension | Ø min. 15 mm, L freely selectable |
Standards | see tables "MicroCoil" / "HotCoil" (other wattage possible) |
The video demonstrates how to use the locking system easily.
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show video"Brazed Together" Housing (BT)
Like the "Axial-" (FE) and the "Two-Screw-"(FB) clamp band systems the "Brazed Together" housing is also an original Rosemount system that is exclusively manufactured at Freek. The Freek MicroCoil 1,3 x 2,3 mm used in this type is tightly coiled on a heat-conducting precision tube and encapsulated and thermically insulated by an outer lathing part. For an even better heat transition the heating element can be vacuum brazed as an option.
The "Brazed Together" design combines many advantages: high accuracy, good heat conduction, large power density and mechanical stability.
Design | Rosemount |
System | Housing BT |
Function | Toleranced fit |
Heater | MicroCoil 1,3 x 2,3 mm |
Dimension | Ø 19,05 x 25,40 mm (Ø 3/4" x 1") Ø 19,05 x 30,50 mm (Ø 3/4" x 1,20") Ø 22,40 x 30,50 mm Ø 22,40 x 34,00 mm other dimensions possible (min. quantities of 25 pcs.) |
Power | on request according to customer specifications |
Kappa Series (compatible with Husky)
The Kappa series is an original nozzle heater system of our EUCOPET co-operation partner Thermetic Products Inc. USA, which we assemble as well at Freek. At the same time it is a well-proven "Husky-replacement" heater (see spare part cross-reference list).
Thermetic's Kappa series are constructed with a nickel plated copper inner sleeve and a stainless outer sleeve. The heater is sandwiched between these sleeves eliminating the heat transfer problems associated with other dual sleeved designs. The material used direct the heat inward toward the nozzle, resulting in a very efficient heater with even heat distribution. The tightly toleranced ID allows a slip fit with no clamping required. An external bendable thermocouple Ø 1,0 mm can be assembled.
Design | Thermetic |
System | Kappa |
Function | Toleranced fit |
Heater | Ø 1,4 mm (Thermetic style) |
Dimension | Ø 19,05 mm (Ø 3/4") Lengths: 30, 40, 50, 60, 70, 80, 90, 100, 110, 120, 130, 150, 170, 190 and 210 mm |
Power | 220, 350, 400 and 450W at 240V (other wattage possible) |
Power tolerance | ±2% (Ø 1,4 mm "Thermetic style") |
Downloads:
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Inquiry Form HotMicroCoil Heating Elements
Just download, print, fill in and fax it to us. You will receive our quotation shortly. Alternatively, you can use our online inquiry form for HotMicroCoil Heating Elements here.
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Flyer - Heating Elements for Hot Runner Nozzles
HotMicroCoil-Heating Elements from Freek.
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Spare part cross-reference list
Spare Heaters suitable for hotrunner nozzles of familiar OEMs (Husky, Kortec, SIG, ...).
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Flyer Xtreme small
Our "Xtreme small" heating elements set standards in the field of micro injection moulding and micro applications for electric process heat in general.
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Really hot! Our Product Flyer.
Download our leaflet here.