Tempco Band Heaters

Standard Cast-In Finned Heater Designs for Air-Cooled Extruder Systems

Aluminum Finned Cast-In Band Heaters are used as an alternative to Liquid Cooled Cast-In Band Heaters for heating and cooling the barrels of plastic extruders.
As a standard, Finned Cast-In Band Heaters are manufactured in aluminum alloys because this material provides very good thermal conductive properties. For applications requiring higher operating temperatures and/or higher watt densities, bronze or brass alloys can be used.
Precision machining of the inside diameter yields superior heat transfer between the heater and

the machine barrel, thereby ensuring uniform heating and cooling of the extrusion process. The heaters are secured to the barrel either by Stainless Steel Clamp Bands or by means of Bolt Clamping the heater halves together.
Finned Cast-In Band Heaters can be designed to meet the mechanical and physical constraints of existing extruder shroud systems. They are manufactured for Original Equipment Manufacturers (OEM) and maintenance (MRO) applications to customer specifications.

Type FF —Finned Aluminum Cast-In

This aluminum cast-in band heater style is normally made to be used in conjunction with Arctic Cast Shroud Systems. It can also be used as a stand-alone replacement for other heating and air cooling extrusion systems.
The clamping mechanism consists of separate stainless steel straps and is normally supplied with Type “E” screw terminals. For other termination styles see pages 3-56 and 3-57.

Cast-In Aluminum Band Heater Bolt and Strap Clamping Designs

Shown with Type T Termination

Shown with Type S Termination

Type P—Bolt Clamp

This finned aluminum cast-in band heater features standard bolt clamping design. The fins cover approximately 95% of the heater width. This style can be used on Tempco’s exclusive shroud systems and/or as a stand-alone replacement for other heating and air cooling extrusion systems.
It is supplied with Type “S” terminals if not otherwise specified. For other termination styles see pages 3-56 and 3-57.

Type F—Strap Clamp

This finned aluminum cast-in band heater features standard strap clamping design. The fins cover approximately 90% of the heater width. This style is utilized as a replacement heater for existing extrusion systems requiring heating and forced air cooling by finned aluminum cast-in heaters.
It is supplied with Type “S” terminals if not otherwise specified. For other termination styles see pages 3-56 and 3-57.

Low-Profile Finned Aluminum Cast-In Band Heater – New Unique Design for Smaller Extruders

Shown with Type R Termination

Only half the band heater is shown for better viewing of the finned construction.

Type LP Low-Profile for 1" to 1-1/2" Extruders

This low-profile aluminum cast-in band heater has a compact design that is intended to be used on small tabletop extruders – 1" to 1-1/2" in screw size. Clamping is achieved by a unique, low profile bolting method that allows the maximum use of surface area for fins. If not otherwise specified, supplied with Type “S” screw terminals. For other termination styles see pages 3-56 and 3-57.