Non-Swaged Cartridge Heater Watt Density
Formula
Watt density is calculated with the following formula:
Watt Density = Wattage / Heated Length x Diameter x 3.14
Clearance
Clearance is determined by taking the hole diameter and subtracting the heater diameter.
- Cycling reduces heater life and high cycling applications should use lower numbers.
- Staying below these values will result in increased heater life.
Non-Swaged Cartridge Heater Watt Density
Hole Clearance |
1000* |
800* |
600* |
400* |
200* |
0.003 |
25 |
30 |
35 |
40 |
45 |
0.005 |
20 |
25 |
30 |
35 |
45 |
0.010 |
20 |
23 |
28 |
30 |
38 |
0.015 |
18 |
20 |
25 |
27 |
34 |
0.030 |
16 |
15 |
20 |
23 |
30 |
0.100 |
10 |
12 |
15 |
20 |
25 |
*Block temperature in degrees Fahrenheit