Practical technical information and useful facts about industrial heating elements, heaters and temperature control from Soloheat.
INDUSTRY QUICK FACTS #2
📐 Cartridge Heater Fit & Bore Size
- Cartridge heaters should be fitted into a correctly sized, accurately machined bore
- A close fit improves heat transfer from the heater into the surrounding component
- Oversized or poorly finished bores can create air gaps, reducing heating efficiency and heater life
- For high-performance applications, the heater diameter, bore tolerance, length and watt density should all be considered together
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INDUSTRY QUICK FACTS #1
Heater Watt Density
- Watt density describes how much electrical power is applied to a given heating surface
- It is usually expressed as W/cm² or W/in²
- Higher watt density isn’t automatically better
- The correct value depends on the material being heated, operating temperature, heat transfer and available heater surface area.
Related: Cartridge Heaters →
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More Electric Heating Element solutions – Links
Not sure this is the heater type for your application? Take a look at our other heating solutions:
- Cast Aluminium / Alum Bronze Heaters
- Ceramic Band Heaters
- Mica Band Heaters
- Cartridge Heaters – includes on-line store
- Nozzle Heaters – includes on-line store
- Thermocouples, Plugs & Cables – includes on-line store
- Tubular & Square section Elements / Immersion Heaters
- Ancillary Items & Heated Hoses
- Insulation Jackets
For more information on Electric Engineering Principles, check out our Engineering Guide