Types Of Air Cooled Cast-In Heaters hub

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Types of Air Cooled Cast-In Heaters

Type P--Bolt Clamp	Features standard 1" high fins and 1" thick body, utilizing bolts and nuts for clamping. Fins cover approximately 100% of heater width. Supplied with Type "S" Termination if not otherwise specified.
Type FF--For Arctic-Cast^Ž Shrouded Systems	Features standard 1" high fins and 1" thick body, utilizing 3/4" to 1" wide clamp straps. A 1" high by 1/4" thick shoulder at each end of the casting mates to the I.D. of the Cast Aluminum Shroud. This unit is normally supplied with Type "E" terminals. Specifically designed for use with Tempco's Arctic-Cast^Ž Systems and can be used for other air cooled applications.
Type F--Strap Clamp	Features standard 1" high fins and 1" thick body, utilizing 1" wide strap clamping at either end of the heater. Fins cover approximately 80% of the heater width. Supplied with Type "S" Termination if not otherwise specified.
Type LP Low Profile for 1"to 1-1/2" Extruders	The Type LP design is intended to be used on smaller tabletop extruders--1" to 11/2" screw sizes. This unique design features 1" high fins, which have smaller radii at the fin's crest and root. This results in: 1. Less heater mass to heat up and cool. 2. More cooling fins, yielding greater than normal surface area to dissipate BTU's. Clamping is achieved by a unique, low profile bolting method that allows the maximum use of surface area for fins, not clamping mechanisms. If not otherwise specified, supplied with Type "S" screw terminals.
Type AW--Dual-Cooling Functions	This design allows the user to maximize cooling capabilities as cast fins and cooling tubes are both incorporated into the heater. Blowers and liquid flow can operate simultaneously for maximum cooling capacity. Available with straps or bolt and nut clamping in finned design styles P and F. If not otherwise specified, supplied with Type "S" screw terminals and 3" long cooling tube extensions. This type of Cast-In Heater is manufactured on a per order basis.

Long Life and Maintenance Free

Historically, liquid cooled Cast-In Heaters have been the more frequently employed method of controlling the melt temperature of extrusion barrels. There is no doubt about the effectiveness and speed of liquid cooled castings in removing heat from the extrusion process. However, there are a number of drawbacks that primarily relate to maintenance-associated issues. Air Cooled Cast-In Heaters are virtually maintenance free and therefore, when properly installed and applied, have the capability to far outlast their liquid cooled counterparts. Since cooling tubes are not used, the possibility of breakage, cracking or becoming clogged with brine or mineral deposits is not a concern.

Additionally, Air Cooled Cast-In Heaters do not require an expensive cooling tower or heat exchange system, extensive plumbing systems and labor for installation. These factors along with the benefit of being maintenance free make Tempco Air Cooled Cast-In Heaters an economical and practical source for your extrusion heating and cooling application.

In certain instances where air cooling alone will not sufficiently cool the process, liquid cooling tubes can be cast into the heater as well to maximize BTU removal.

Standard Sizes and Ratings

The Cast-In Band Heater accessed through the links below constitute a small segment of the thousands of Cast-In Band Heaters we have produced for plastics processing equipment. In order to assist you in selecting the exact heater replacement for your machine, adhere to the following instructions:

Measure the O.D. of your barrel, which in turn will be the I.D. of the heater.
Measure the width of your heater.
Check the wattage and voltage rating per half or per segment. This information is normally stamped on the heater.
Check for special features such as: thermocouple clearance holes, drill and tapped holes, vent cutouts and terminal boxes.
There are two methods for securing a Cast-In Band Heater to a barrel; separate clamping straps or nut and bolt clamping.
Once you have established this information, proceed to match your heater description with one of our standard Cast-In Band Heaters. They are listed by extruder size. Starting with the I.D., read across the chart until you have a perfect match. Wattage can vary up to 15% either way with little or no effect to your process.

Extruder Size 1" to 1-1/2"

Extruder Size 2" to 2-1/2"

Extruder Size 3-1/2"

Extruder Size 4-1/2"

Extruder Size 6"

Extruder Size 8"

Extruder Size 10"

Custom engineered/Manufactured Cast-In Heaters

For sizes, ratings, terminations and/or features not listed, Tempco will manufacture a Cast-In Heater to your specifications. State quantity, watts, volts and full heater description with all the appropriate specifications and features required.

Ordering Information