Mica band heaters are widely utilized across a spectrum of industries, with a notable presence in the plastics sector. Their versatility allows them to achieve impressive sheath temperatures, reaching up to 650°C when outfitted with a stainless steel sheath, or 480°C with an aluminized steel sheath. Available in various configurations, these heaters offer integrated temperature sensors, termination options, and clamping configurations.
To ensure optimal performance and longevity, it is crucial to observe a maximum watt density of 55 watts per square inch. It is recommended to decrease the watt density as temperatures rise, thus bolstering the band heater’s durability. Typically, the nominal watt density falls within the range of 20 to 45 watts per square inch (equivalent to 3 to 7 watts per square centimeter).
For proper sizing of the heater, the following key information is necessary:
- Internal diameter (ID) of the heater when fully clamped
- Height of the heater
- Supply voltage, wattage, or amperage
- Termination type
- Additional options such as built-in temperature sensor
Construction Type
One piece construction
This is the most common type of mica band heater
Two piece construction
Allow easy installation. The pair of heaters can be connected in series or parallel (e.g 2x 120V connected in series to a 240V source)
Additional customizations are also viable, including the incorporation of holes and notches in the band, as well as the option for a two-piece rectangular construction.contruction
Hole and notches
Rectangular 2-piece band heater
Termination Type
2 wire leads exit from both sides of gap
One 2 core wire lead
Inline screw terminals
Screw terminals separated by gap
