Designed For Trouble-Free Service The Duraband heater design is the result of many years
of research, development and testing for a reliable mica
insulated band heater that can perform at the higher
operating temperatures [up to 480°C (900°F)] essential to
process high temperature resins, providing long, efficient
service necessary for today’s high productivity of plastic
extruders, injection and blow molding machines.
Duraband is a proven heater design for good life efficiency
and dependability. It assures maintaining the lowest winding
temperatures possible, keeping a low-mass heating element
assembly for fast heat-up and quick thermal response to
controls. It incorporates the low thermal expansion
built-in strap, a unique design feature.
Advantages and Variations
Duraband mica insulated heaters are widely used on
operations involving heating of cylindrical surfaces and
are manufactured in a full range of standard construction
variations, physical dimensions, electrical ratings, and
a complete arrangement of screw terminals and lead
terminations.
However, these standard Duraband heater variations
and terminations do not represent the full extent of our
capabilities. OMEGA’s engineering staff, with many years
of experience in heat processing and temperature control
applications, can assist you in designing the right Duraband
heater for your specific application.
Standard Specification and Tolerances Performance Ratings Maximum Temperature: Standard Sheath: 482°C (900°F) Nominal Watt Density: 3 to 7 Watt/cm² (20 to 45 Watt/in²) Maximum Watt Density: Dependent on heater size and operating temperature Electrical Ratings Maximum Voltage: 480 Vac Dual Voltage or 3-Phase: Available depending on heater design Maximum Amperage: Lead Wire Termination: 10 Amp Screw Terminations: 8-32 UNF—20 Amp; 10-32 UNF—25 Amp Resistance Tolerance: 10%, -5% Wattage Tolerance: 5%, -10% Physical Size Construction Limitations Minimum Width: 19.1 mm (3/4") Width Tolerance: 1.59 mm (±1/16") Minimum Inside Diameter: 22.1 mm (7/8") Nominal Gap: 9.5 mm (3/8")—if a larger gap is required for probes or thermocouples, specify when ordering Built-In Brackets Heater Width
38 to 76 mm (1½ to 3") Number of Brackets 1
79 to 127 mm (3 1/8 to 5") Number of Brackets 2
130 to 145 mm (5 1/8 to 67/8") Number of Brackets 3
178 to 254 mm (7 to 10") Number of Brackets 4
257 to 381 mm (10 1/8 to 15") Number of Brackets 5
If tighter tolerances are required, contact OMEGA.