High Watt Density Cartridge Heaters

Applications

  • Hot Runner Bushings
  • Marking & Sealing Machinery
  • Packaging Industry
  • Medical & Laboratory Apparatus
  • Shoe Making Industry
  • Die and platents
ORDER NOW

Click Here to Read Terms & Conditions

Anupam's Cartridge heaters can be considered "component heaters" that are used to heat up many different applications. Primarily used in mould, these heaters fit snug inside a cavity and helps heat solids by reaching high temperatures. Cartridge heaters have the versatility of being able to carry thermocouple inside to help control temperatures of the heater more accurately. Various diameters allow for it to be used in any cavity and can be custom designed with any cold section. Lead wires extend from the end to your controls.

The construction of high temperature cartridge heaters positions a nickel-chrome resistance wire precision wound around a magnesium oxide core. It is inserted into a stainless or Incoloy tube locating the resistance wire close to the sheath. The core is centrally positioned within the tube and filled with magnesium oxide powder. Nickel pins pass through the centre of the core making contact with the resistance wire at both ends. The whole is assembly is highly compacted by a swaging operation and thus ensuring excellent heat transfer to the external sheath. One end of the heater is closed with a welded metal end-disc and wire leads exit at the opposite end which is typically closed with a lava seal. A variety of wire leads and lead protection options are available. Heaters can be supplied with internal thermocouples, mounting fittings and many other options.

  • Hot Runner Bushings
  • Marking & Sealing Machinery
  • Packaging Industry
  • Medical & Laboratory Apparatus
  • Shoe Making Industry
  • Die and platents
  • Incoloy sheath for oxidation resistance.
  • Unique winding design allows faster heating and longer life
  • Fine grain high purity magnesium oxide (MgO) fills any voids around the resistor wire to optimize heat transfer, dielectric strength and life of the heater.
  • Operated at Higher temperatures
Technical Features:
Feature High Watt Density
Max. Surface Load 25 W/cm² or 150 W/inch²
Wattage Tolerance +5% - 10%
Std. Dia Range 3mm to 25.4mm
Diameter Tolerance - 0.02 mm to - 0.06 mm , if not specified
Thermocouple Type J / K
Length Tolerance ± 1.5 % , min ± 1mm
Max. Sheath Temperature 750° C / 1380° F
Crimped-On Leads

A high temperature double crimp connects the MGT (450°C) leads to solid nickel pins. This construction is recommended for applications with elevated temperatures. Due to the rigid nickel pins, this construction is not recommended in applications where movement or flexing is encountered, or if sharp bends are required adjacent to the heater exit.

Swaged in Leads

High temperature MGT (450°C) wire is internally connected and swaged in place. This construction is recommended for applications in which the leads must be bent at the exit point from the heater and where mild flexing may be found. For applications with continuous or more severe movement, we would recommend metal braid or armor cable.

Stainless Steel Braid

High temperature MGT (450°C) wire is internally connected and swaged in place along with stainless steel braid. This construction offers protection against abrasion and sharp edges. This is a very strong construction which offers full length flexibility. This construction is recommended in applications with flexing and where the leads must pass through metal openings or routed along metal components.

Right Angle Fibreglass Leads

High temperature MGT (450°C) leads exiting at right angle to the sheath. This construction offers a compact design where space is limited. This construction is not recommended where abrasion or flexing is present.

Right Angle Stainless Steel Braid

wire exiting at right angle to the sheath. This construction is recommended in applications with flexing and where the leads must pass through metal openings or routed along metal components. This construction is desirable when space is limited and it is not feasible to bend standard leads.

Besides std. end connection as shown above, various Optional end connection are also available such as:

  • Teflon Insulated Leads With Teflon Plug, Humidity Resistance upto Max 260° C in The Head Zone.
  • Silicon Insulated Leads With Silicon Sealed in tubing, Humidity Resistance upto Max 180° C.
  • Teflon Insulated Leads With Epoxy Resin Sealed in tubing.
  • Flexible Metal Sleeving (MGS), Zinc Plated Steel or Stainless Steel.
  • Braided Metal Sleeving (DHG), Zinc Plated Steel.
  • Stainless Steel Conduit Sleeving (EWS), Gas & Water tight.
  • Multi Stranded Silicon Cable, Fastened With Tubing Piece.
  • Tubular Bend or Right Angled Exit etc.