The longevity of a mica band heater is directly related to the heat transfer rate from the heater to the cylinder it is intended to heat. One factor affecting the quality of heat transfer is the clamping mechanism of the mica band heater.
MEGABANDs come with different styles of clamping mechanisms. Each style has unique characteristics and advantages. Selection is based on the specific requirements of the application.
Independent strap
These straps evenly distribute the drawing force around the band heater by clamping the heater tightly around the surface of the cylinder. This distributed force is transferred to the internal windings, improving heat transfer through effective surface contact and elimination of air gaps.
Build-in barrel nuts
This clamping mechanism combines the drawing quality of an independent strap with ease of installation. The top sheet is transformed into a strap by incorporating barrel nut fasteners at both sides of the gap. Recommended when holes and cut-outs prevent the usage of an independent strap.
Spot-welded straps
This construction is similar to the built-in barrel nut style. The fastener section of an independent strap is spot welded on the top sheet on both sides of the gap. This construction allows for a heated section under the fastener.
Flange lock-up
The most economical fastening style, flange lock-up is used mostly on narrow heaters.
