Cartridge Heaters

Cartridge Heaters


Standard Cartridges

  • Our Standard Cartridge heaters are designed as an economical, quality heater for lower temperature use (typically 40 watts per square inch, depending on the application).
  • The Standard Cartridge Heater is made to withstand internal temperatures of up to 1000° F (538° C) and features a stainless steel sheath for resistance to oxidation. High-purity magnesium oxide (MgO) fills any space around the resistor wire in order to optimize heat transfer and increase the life of the heater.

 

Hi-Temp Cartridges

  • The ruggedly constructed, high watt density Hi-Temp Cartridge heaters provide excellent heat transfer efficiency, high operating temperature (typically 90 to 95 watts per square inch, depending on the application) and long life.
  • The Hi-Temp Cartridge is made to withstand internal temperatures of up to 1600° F (871° C). Its swaged construction allows for minimal air gaps, providing superior heat transfer and resistance to impact and vibration. Dual voltage and three phase are available on selected diameters of the Hi-Temp.

 

Product Details

Cartridge Heaters - Features & Benefits

Standard



  • Computer designed specifications.
  • Stainless steel 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.
  • Resistor wire is joined to the leads by placing each end into nickel chromium which, upon crimping, affords a positive and consistent junction.
  • Ceramic cap standard; cement, epoxy or RTV seal also available.
  • Disc end of the heater rests on a mica insulator and is held in position when the sheath is rolled over onto it. This is a standard assembly procedure unless the application requires moisture or waterproof sealing, at which time the end cap can be sealed by brazing or welding.

Hi-Temp



  • Computer designed specifications.
  • 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.
  • Cement seal is standard, RTV and Epoxy seals also available.

Cartridge Heaters - Industries & Applications

Our Cartridge Heaters can be used in a wide variety of applications.

  • Sealing Bars
  • Heating Platens
  • Heating Fluids
  • Forming
  • Hot Stamping

Select Hi-Temp Cartrige heaters for applications involving high heat and/or excessive vibration.

Cartridges can also be modified to meet the demands of special applications. Our engineers can utilize a variety of alternative features and options to customize the heater to your specific needs.

Cartridge Heaters - Lead Options

Flexible Leads

Internally connected leads. For applications requiring maximum flexibility at lead exit. 10" (25.4 cm) leads standard, other lengths are available.


Externally Connected Leads

Hi-Temp Cartridges are provided with approx. 1" (25.4 mm) sleeving over lead junction as standard. 10" (25.4 cm) leads standard, other lengths are available.


Straight Leads with Silk and Paint

Repairable silk and paint leads for Standard Cartridges. Hi-Temp Cartridges are provided with approx. 1" (25.4 mm) sleeving as standard. Silk and paint leads are optional on Hi-Temps. 10" (25.4 cm) leads standard, other lengths are available.


Straight Leads with Clip Support

Clip support helps to minimize lead breakage where leads exit heater. 10" (25.4 cm) leads standard, other lengths are available.


90° Leads

Leads exit at 90° angle for applications requiring small radius bends, lead wire protection and where space is limited. 10" (25.4 cm) braid standard, other lengths are available. Order by overall length.


90° Leads with Clip

Clip support helps to minimize lead breakage where leads exit heater. 10" (25.4 cm) leads standard, other lengths are available.


Cartridge Heaters - Lead Protection

Straight Strain Relief Spring

Straight strain relief spring minimizes bending strain on lead wires. Spring extends approximately 3" (76.2 mm) beyond end of sheath.


Stainless Steel Braid

Stainless steel braid over lead wires. For applications requiring small radius bending and lead wire abrasion protection. 10” (25.4 cm) braid standard, other lengths are available.


Stainless Steel Armor

Straight stainless steel armor cable protects leads from abrasion. Sizes include: 1/4", 5/16", 1/2", and 5/8". 10" (25.4 cm) standard, other lengths are available.


Convoluted Armor

Used in situations that require moisture resistant armor. Available in most instances in which armor is utilized. Sizes: 3/8", and 5/8" only. 10" (25.4 cm) standard, other lengths are available.


Right Angle Elbow

Right angle copper elbow for applications requiring right angle lead exit. Moisture-resistant seal is optional. 10" (25.4 cm) leads standard, other lengths are available.


Cartridge Heaters - Screw Terminals

External Pins

External Pins

Flush With Cap

Flush With Cap

Eihter End

Eihter End


Screw terminals for applications with high amps and requiring universal connection capability. Terminals can be attatched to external pins, flush with cap (not available for Hi-Temp), or one on each end.

Cartridge Heaters - Fittings

NPT Bushing

Hex head N.P.T. bushing attached. Must specify insert length and bushing material. Sheath material types: stainless steel, cold rolled or galvanized. Bushing material types: brass, stainless steel or steel. 10" (25.4 cm) leads standard, other lengths are available. Octagonal box available.


Hex Center Bushing

Hex head N.P.T. bushing attached. Must specify insert length and bushing material. Sheath material types: stainless steel, steel or brass. Bushing material types: brass, stainless steel or steel. 10" (25.4 cm) leads standard, other lengths are available. Octagonal or explosion-proof boxes can be adapted to both Standard and Hi-Temp Cartridge heaters.


Adapter

Must specify insert length and bushing material. Sheath material types: stainless steel, cold rolled or galvanized. Bushing material types: brass, stainless steel or steel. 10" (25.4 cm) leads standard, other lengths are available.


Adapter with Hex Head

Must specify insert length. Bushing material is copper. 10" (25.4 cm) leads standard, other lengths are available.


Cartridge Heaters - Thermocouple

Thermocouple at Bottom

Grounded

Grounded

Ungrounded

Ungrounded

Bottom Grounded

For fast response, heater is positioned in a blind hole or where material flows past or encompasses the heater. The end disk is always welded in place. Machined flat up to 1/2" (12.7 mm) dia.

Bottom Ungrounded

Where circumstances are such that an ungrounded thermocouple is required.


Thermocouple at Center

Grounded

Grounded

Ungrounded

Ungrounded

Center Grounded

Selected when a fast response is required. The thermocouple can be located in any position along the length of the heater. Standard location is midway along the length with approximately 1/4" (6.4 mm) cold section on either side of the junction. Not available on 1/4” diameter heaters.

Center Ungrounded

The thermocouple is positioned internally and ungrounded to monitor the heater temperature. Generally used in research and development applications.


Removable Thermocouple

The thermocouple is inserted down a hypotube for easy removal.


Thermocouple Availability

All heaters shown are Hi-Temp with type "J" thermocouple standard. Type "K" thermocouples are available.

For standard Cartridge heaters thermocouples are available located at the bottom or center, ungrounded only.

Cartridge Heaters - Other Options

Armor with Plug

Armor cable with power plug attached. Must specify armor length and Hubbell® power plug number. Moisture-resistant armor available. Other Plugs are available.

Also available with Hex Head NPT bushing and armor.


Bolt Heater

Bolt heaters are designed to heat drilled metal surfaces quickly while minimizing heat loss to surrounding areas. Each is designed to expand drilled bolts or studs while maintaining a uniform heat throughout its heated length. Typically, after a bolt is heated (expanded) the holding nut is tightened. The shrink tightness is obtained when the heater is removed and the bolt cools. This process is frequently used in the assembly and/or servicing of heavy duty equipment such as compressors, steam turbines, pressure vessels, etc.