Cartridge Heaters

Cartridge heaters are most frequently used for heating metal parts by insertion into drilled holes. For easy installation, the heaters are made slightly undersize relative to their nominal diameter.

The majority of applications do not require maximum watt/in². Use a watt density only as high as needed. Take advantage of the safety margin provided by using ratings less than the maximum allowed. Select space heaters for most even heat pattern rather than the highest possible wattage per heater.

At medium Watt densities, general purpose drills are usually adequate for drilling holes. Typically, these result in holes .003" to .008" over the nominal size of the drill, resulting in fits of 010". 015". Of course, the tightest fit is desirable from a heat transfer standpoint, but somewhat looser fits aid in installing and removing cartridge heaters, especially long ones. Holes drilled completely through the part are recommended to facilitate removal of the heater. After drilling, clean or degrease the part to remove cutting lubricants.

Common Applications :- 

• Aerospace
• Food Processing
• Food Service Equipment
• Glue Guns
• Heating Gases and Liquids
• Hot Runner Molds
• Hot Stamping
• Laminating Presses
• Medical Equipment
• Molds
• Packaging Equipment
• Plastic Extruders
• Plastic Molding
• Platens
• Scientific Equipment
• Sealing Bags
• Semi-Conductor
• Shoe Machinery

Determining Watt Density

The term "Watt density" refers to the heat flow rate or surface loading. It is the number of Watts per square inch of heated surface area. For calcualation purposes, stock cartridge heaters have a 1/4" unheated length at each end. Thus, for a 1/2" x 12" heater rated 1000 Watts, the Watt density calculation would be as follows : Watt Density = W / (Π x D x HL) Where:  W= wattage = 1000 W Π = pi (3.14) D= diameter = 0.5 inch HL = Heated Length = 11.5 inch Watt Density = 1000/(3.14 x .5 x 11.5) = 55 W/in

We are widely known as a reliable High Density Cartridge Heaters Manufacturer, Exporter and Supplier in the worldwide market. The Cartridge Heating Element we offer is designed for use in the applications where limited heat is required. The High Density Cartridge Heaterss are manufactured using pure Magnesium Oxide insulation ensuring high and efficient heating.

Attributes

• High watt density
• Fast heat transfer efficiency
• High dielectric strength
• Swaging increases the high thermal conductivity
• Uniform heating
• Shock and vibration resistant
• Built in thermocouple J or K

Advantages

• Maximize Heat Transfer
• Maximum operating temperature 750^oC
• Reduce Maintenance Costs
• Leak proof welded end cap prevents heater contamination due to the entry of any foreign materials
• Our heaters are cylindrically ground to have better surface contact and minimum hole tolerance

Product Details

• Wattage tolerance : +5%-+10%

• Diameter In MM :
  
  • 5
  • 6
  • 8
  • 9.5
  • 10
  • 12
  • 12.5
  • 14
  • 16
  • 20
  • 25

Used In

• Dies
• Hotplates
• Platens
• Injection molds
• Packaging machinery