Overview
The Watlow J9AX137B is a 9-inch FIREROD cartridge heating element rated at 240V and 1000W. The FIREROD cartridge heater revolutionized the heating element industry in 1954 when it was patented as the first swaged cartridge heater; the mechanical procedure of swaging reduces the diameter of the heater by compacting the unit, which directly improves the heat transfer and efficiency of the heater. This component heater delivers consistent, reliable thermal output for metal forming, drying, process heating, and other industrial temperature-control applications requiring precision and durability.
Key Features
- Swaged construction: Built using the finest materials and construction methods and backed with extensive quality assurance programs, FIREROD heaters provide superior heat transfer, uniform temperatures, resistance to oxidation and corrosion, and long life even at high temperatures.
- Incoloy 800 sheath: Watlow’s standard Incoloy 800 provides high temperature resistance to oxidation and corrosion, proving far superior to 304 stainless steel alloys used by other manufacturers.
- High-purity MgO insulation: Watlow uses only high purity MgO, compacted to a carefully predetermined and closely monitored density, which assures high dielectric strength and efficient, fast heat transfer.
- Precision nickel-chromium wire: Computer-calculated gauge and length ensure even, efficient heat distribution throughout the element.
- Lead Adapter compatibility: Watlow’s patented LA–or Lead Adapter–Modification Method allows stock Firerods to be modified from stock with 13 different lead configurations, most of which can be ordered with no-heat extensions or optional mounting methods like flanges, threaded fittings, and locating rings.
Technical Specifications
- Voltage: 240VAC, single-phase
- Wattage: 1000W
- Length: 9 inches
- Sheath Material: Incoloy 800 alloy
- Insulation: High-purity MgO, swaged
- Resistance Element: Nickel-chromium wire
- Maximum operating temperature (Alloy): 1400°F (760°C); maximum watt density: 400 W/in² (62 W/cm²)
- Certifications: ISO 9001, UL & CSA approved lead wires with silicone-fiberglass insulation rated to 480°F
Typical Applications
- Metal forming and extrusion equipment
- Plastic injection molding and drying
- Food service and beverage processing equipment
- Industrial process heating and temperature maintenance
- Laboratory and pilot-scale equipment
- Replacement component in existing heating systems
Compatibility & Replacements
Compatible With
- Watlow temperature controllers and power supplies (240VAC input)
- Industrial thermostat systems requiring 240V single-phase input
- Insertion heater cavities and cartridge heater bores sized for 9-inch length elements
- Equipment originally configured for FIREROD cartridge heating elements
Replaces / Drop-In Replacement For
The Watlow J9AX137B is designed as a direct replacement for Watlow FIREROD cartridge heaters of equivalent 9-inch length and 1000W 240V specifications. Verify compatibility with your system integrator or equipment manual before ordering, as mounting configurations, lead styles, and terminal types may vary between similar models.
Works With
- Watlow SELECTâ„¢ stock FIREROD heater delivery and configuration programs
- Standard 240VAC single-phase electrical distribution systems
- Universal industrial temperature control environments (food service, medical, plastics, metals)
- Lead Adapter (LA) modified configurations for flexible mounting and lead options
