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Below is a list of resources on Mica Band Heaters to help provide you with some additional information on our custom band heater specifications, how to measure mica band heaters, and information on locating clearance holes on custom band heaters. If you have any questions on these topics or need some more information, please contact our customer service department by phone at (800) 633-2962, by email at sales@thermalcorp.com, or send us a quick message using our chat feature located at the bottom of the page.
Custom Band Heaters Specifications
| Tolerances | |
|---|---|
| Width | ±1/16" |
| Circumference | ±1/32" |
| Wattage at Design Voltage | +5% - 10% |
| Standard Gap Size for 1 piece heater: | 5/16" |
| Standard Gap Size for 2 piece heater: | 3/16" |
| Standard Terminal Height: | 13/16" |
| Lowprofile Standard Terminal Height: | 3/8" |
Measuring Mica Band Heaters
Check out our video blog on how to properly measure mica band heaters!
Band Heater Circumference Measurement
When measuring the circumference of custom band heaters, measurements should be made on the inside surface from Point A to Point B whenever possible. When ordering, please inform your customer service representative of the gap size (space between Point A and Point B).
If the heater cannot be measured, then determine the barrel circumference by measuring from Point A around to Point A again. The barrel can be measured from Point B to Point C to determine Barrel O.D.
Please make sure to inform your customer service representative of required the gap size.
Locating Clearance Holes on Custom Heater Bands
by Part Feature and with Degrees or Clock Time
If hole location cannot be determined in degrees, then measurements should be made on the inside surface of the heater: (A) From the edge of gap to edge of hole, or (B) from the edge of gap to the centerline of hole.
When a hole is on the centerline of the width of a heater the maximum hole size can be determined by subtracting 3/4″ from the heater width.
When a hole is offset to one side of a heater there must be a minimum of 3/8″ clearance from edge of hole to edge of heater on one side of the hole
Holes should be located in degrees or clock time if possible, this will allow for the correct placement of holes. Note: Every minute on the clock is 6°.
Written by Jennifer Taylor & Shelby Reece
Date Published: 09.10.2018
Last Updated: 03.11.2020