Cartridge Heaters

Magnum™ cartridge heaters are swaged designs, made for use in applications where high watt density, high temperatures and long service life are critical to minimize mold service downtime and expensive press open time. The swaged construction produces a highly compacted unit that resists shock and vibration, while providing for maximum element life through efficient transfer heating. They last up to 20 times longer than uncompacted cartridge heaters. UL/CUL Component Recognition Available. Durex will also custom manufacture to your specifications.

Cartridge Heater Features:

UL/CUL component recognition available
Rugged dependable heat source
Temperatures up to 1500°F (820°C)
Many diameters offered as standard
Metric sizes also available
Highly compacted unit which resists shock and vibration
Alloy sheath for high corrosion resistance
Custom manufactured to specifications

Factors for Longer Heater Life:

Do not exceed recommended maximum watt density specified for the heater size.
The cartridge heater sheath must fit properly into the machined hole, a tight fit is crucial.
Protect the heater from contaminates such as oil, grease, and vapors.
Install adequate KW to accomplish work load and make up for heat losses.

Special Modifications:

In addition to the standard designs, Durex offers a variety of special modifications which are available to customize the heater for your application.

Distributed Wattage - Resistance windings can be concentrated in specific areas of the heater for localized heat distribution.

Centerless Grinding - Precision grinding of the cartridge heater sheath provides tighter diameter tolerances when required.

Teflon Coating - Teflon coating can be provided on heater sheath for applications requiring chemical resistance.

Ground Leadwire -Separate color coded groundwire can be provided when required.

Special Connectors - Various connectors for power leads can be provided upon request.

Ordering Information

When ordering Cartridge Heaters, specify the following:

--Nominal Diameter
--Overall Sheath Length
--Lead Length
--Termination Type
--Voltage
--Wattage
--Special Modifications

Cartridge Heater Care and Maintenance:

--Store heaters in a dry area, especially during periods of high humidity.
--Protect leads from abuse and abrasion.
--Maintain temperature control and keep accessories in good working condition to obtain correct operating conditions.
--All cartridge heaters have hygroscopic tendencies and can accumulate moisture is shipping and storage. Low heater insulation (less then 1 meg ohm) can be baked in an oven for several hours or started at low voltage to elimate moisture.