Backer Marathon Call Us Today 1-830-775-1417
Standard Square Cartridge heater
Square Cartridge heater With Conduit
Square Cartridge heater With Braid
Square cartridge heater with right angle leads
Square Cartridge heater With Right Angle braid
Square Cartridge heater With Right Angle Conduit
Standard Square Cartridge heater
Square Cartridge heater With Conduit
Square Cartridge heater With Braid
Square cartridge heater with right angle leads
Square Cartridge heater With Right Angle braid
Square Cartridge heater With Right Angle Conduit

Square Cartridge Heaters

For those applications where a drilled hole is not practical, Backer Marathon offers square cartridge heaters. Unlike square cartridge heaters from other manufacturers, our square cartridge heaters are swaged, allowing them to be used in high temperature and high watt density applications.

Square heaters are ideal for milled slots in long platens where drilling a long hole would be too difficult. Square heaters are also much easier to remove from a slot after extended high temperature usage than removing a round heater from a drilled hole.

Standard Square Cartridge Heater Specifications

  3/8 1/2 5/8
Maximum Cross Section 0.374 0.499 0.624
Minimum Cross Section 0.369 0.494 0.619
Standard Lead Wire 22 22 18
Maximum Amp. 9 9 15
Maximum Lead Wire 22 18 18
Maximum Amps With 9 15 15
Maximum Volts 300 300 300
Lead Wire Temp 550 °C 550 °C 550 °C

 

Applications

Typical applications for square cartridge heaters include, but are not limited to:

  • Bag Sealing
  • Long Platens
  • Cutting Jaws

 

Engineering Data

Unheated Length at End of Heater

Heater Length .375" Square .500" Square .625" Square
Under 3" Long .25 .30 .38
Over 3" Long .90 .90 1.00
 

Options

  • Configurations - standard swaged-in leads, right angle leads
  • Lead Protection - braid, right angle braid, stainless steel conduit, right angle conduit, sleeving
  • Fittings - tab stops
  • End Seals - mica end piece, RTV, cement, epoxy, epoxylite
  • Lead Wire - 550ºC Duraflex leads are standard.  Other lead materials are available.
  • Other Options - distributed wattage

Watt Density

Square Cartridge Recommended Maximum Watt Densities


Clearance (Inches) 1200°F 1000°F 800°F 600°F 400°F 200°F
0.002 105 200 225 225 225 225
0.003 90 150 220 225 225 225
0.004 75 130 160 225 225 225
0.005 65 105 150 210 225 225
0.007 50 75 110 150 175 225
0.010 45 65 80 110 150 170
0.015 35 55 70 80 105 120
0.030 30 45 60 65 75 80
0.060 20 30 35 40 45 50
0.100 15 25 30 35 35 35