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Inco-MAXX

Cartridge Heaters

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The New Standard of Process Heat: Inco-MAXX 

At American Process Heat, we don’t believe in "economy" parts that fail when you need them most. That’s why we’ve engineered our signature line—the Inco-MAXX Series—to be the only cartridge heater your facility needs.

By moving beyond standard stainless steel and utilizing a premium Incoloy super-alloy sheath, we’ve created a workhorse that thrives where others fail. When you install an Inco-MAXX, you aren't just buying a component; you're investing in uninterrupted uptime.

Why Inco-MAXX Is the Gold Standard.

Maximum Temperature Resilience

Low Failure Rate - Reduced Downtime

Superior Corrosion Defense

Discover the Difference of Inco-MAXX Today!

Cartridge heaters by American Process Heat are high temperature swaged units manufactured with magnesium oxide insulation. Every cartridge heater by American Process Heat is a premium quality unit with an incoloy sheath (APH Inco-MAXX Series) which offers a higher temperature rating and higher resistance to chemical corrosion. 

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American Process Heat cartridge heaters offer a high watt density, swaged construction including solid nickel electrical conductors exiting through a lava end plug. Flexible, stranded,  is fused to the end of the solid conductors and durable fiberglass is used as insulation. If you require your leads to be flexible as soon as they exit the unit, specify swaged leads when ordering. Maximum internal temperature of our incoloy sheathed cartridge heater is 1700ºF. Close uniform spacing (less than 1/16″) between resistance wire and the sheath of the cartridge heater results in more efficient heat transfer, cooler elements, and longer lifetime. Swaging the heater after assembly compacts the insulation material, which increases the heat conduction away from the element, and holds the wire in exact position.  Have Questions? Call us at (513) 201-7255 or email us at sales@americanprocessheat.com​​

Cartridge Heater Diameters

Standard Diameters available for fast shipment are:

Inches - Millimeters

  • 1/4″ (.246" ± .002") - 6.5mm (.252" ± .002")

  • 3/8″ (.371″ ± .002″) - 10mm (.389" ± .002")

  • .487" (.487" ± .002") - 12mm (.468" ± .002")

  • 1/2″ (.496″ ± .002″) - 12.5mm (.488" ± .002")

  • 5/8″ ( .621″ ± .002″) - 14.7mm (.574" ± .002")

  • 11/16″ (.683″ ± .002″) - 15mm (.586" ± .002")

  • .724" (.724" ± .002") - 16mm (.625" ± .002")

  • 3/4″ (.746″ ± .002″) - 16.5mm (.645" ± .002")

  • 7/8″ (.871″ ± .002″) - 18mm (.705" ± .002")

  • 1″ (.996″ ± .002″) - 18.5mm (.724" ± .002")

  • 20mm (.783" ± .002")

  • 25mm (.980" ± .002")

Resistance Tolerances
In designing both cartridge and band heaters, we calculate the required element resistance at 600 degrees Fahrenheit. This resistance is 6% higher than a room temperature of 72 degrees (F). The tolerance allowed on the total heater resistance is +10 / -5%.

Special Resistance Tolerance is +/- 5%.

Maximum Voltage Recommendations
Diameters less than .5": 240V
.5" Diameter and greater: 480V

Lead Length Tolerances
+/- 1" up to 72"

Tolerances and Recommended Voltages

Length Tolerances
+/- 2% with +/- .09375" minimum tolerance.

 

Special Length Tolerances
+/- 1.2% with +/- .09375" minimum tolerance

 

Maximum Lengths
1/4" diameter: 36"
3/8" diameter: 60"
All others: 72"

 

Camber Tolerances
Up to 12" long: 0 .010"
Over 12": .020" per foot of length

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