Tubular Nozzle Band

Tubular Nozzle Band

  • Designed for durability, Tutco's Tubular Nozzle Band can withstand almost any type of contamination, vibration and shock while still providing excellent heat transfer.
  • The use of a tubular heating element as opposed to customary heating methods enables the heater to resist plastic drool, moisture and other contaminants.

 

Product Details

Tubular Nozzle Band - Features & Benefits

  • Excellent heat transfer
  • Contamination resistant
  • Durability
  • Selection of sizes and terminations
  • Ear type clamping standard. Other clamping styles available.
  • May have holes depending on size and position

Tubular Nozzle Band - Industries & Applications

The Tubular Nozzle Band is an excellent choice for most applications involving higher than normal vibration, shock and contamination.

  • Heating nozzles in injection molding and extruding machines
  • Die Casting

In addition, modifications can be made to meet the demands of virtually any special application. Our engineers can utilize a variety of alternative features and options to customize the heater to your specific needs.

Tubular Nozzle Band - Termination Styles

Tubular Nozzle Band Plain Pins

Plain Pins

Customer can finish termination to suit their application. 5/16" (7.9 mm) pin length is standard.


Tubular Nozzle Band Flag Terminals

Flag Terminals

With #10-32 screw. Specify direction.


Tubular Nozzle Band Spade Terminals

Spade Terminals

Specify direction of spade terminals.


Tubular Nozzle Band Screw Terminal

Screw Terminal

Easy to wire screw terminal with mica washer insulation.


Tubular Nozzle Band Bulkhead Fitting

Bulkhead Fitting

Brazed to heater. For quick feed-through mounting. Specify round or hex head, stainless steel or brass.


Tubular Nozzle Band Leads

Leads

High-temperature 250° F (121° C) lead wire brazed onto the heater terminals. Insulated with fiberglass sleeving and covered with shrink tubing. Specify length of leads.


>> Lead Protection Options

Tubular Nozzle Band - Lead Protection

Plain Leads

Jacketed for continuous service up to 482°F (250°C) with nickel standard conductors. It is recommended to use Monel® lugs.

High temperature mica tape lead wire is suitable up to 842° F (450° C) max. with nickel stranded conductors. Outer jacket is glass Teflon® finish. The use of Monel® lugs is recommended. Better Band comes standard with mica tape.


Sleeving

Fiberglass silicone rubber coated sleeving class c -1, 392° F (200° C ) service. Provides extra insulation where wire is exposed to heat, molten plastics or abrasion. Rated 1500 volts at 428° F (220° C), except 5/16" (7.9 mm) size which has no voltage rating. This size used primarily to enclose multiple insulation wires in heat and abrasion resistant covering.


Stainless Steel Braid

Stainless steel over braid is most commonly specified in applications where leads may be subjected to abrasion due to movement of the application. Lead wires may be rubbing together or passing over sharp objects.


Stainless Steel Armor

Used over leads in areas where more protection is necessary. Selected for similar applications as the stainless steel braid, in addition to applications where non-fluid contamination may come in contact with the leads. This lead protection is not as flexible as the braid.

Stainless steel square lock construction.


Convoluded Armor

This is a seamless product and can be attached to the heater so that fluids do not contaminate the leads. This system of lead protection is generally associated with the “Sealed Band” construction. Not recommended where leads are flexed in the application.


Tubular Nozzle Band - Clamping

Strap Standards

Straps can be vastly modified to fit a wide variety of bands. As wider bands are used, multiple straps will most likely be designed in. Normally barrel nuts are built into the ends: one threaded, one through hole. Slots shown are to clear termination areas. Unless otherwise specified, straps are assigned by our engineering staff to best suit each application.

Clamping

Illustrated are the various available styles of clamping for band heaters. When a band is provided the material is of a low coefficient of expansion type. Width of the clamping band or the number used per heater is dictated by the design standards. There are a variety of clamping mechanisms that can be attached to the band or directly to the heater. The most common forms are the strap and strap ends. Factors influencing the type and size of clamping are:

  • Type of band heater
  • Diameter and Width
  • Termination type and location
  • Holes and notches in heater
  • Preferences of the user


Belleville Clamping

A clamping system is generally selected for use with large diameter heaters where additional compensation of band elongation is required. Belleville clamping comes with a standard 1/4 - 20 X 5" (12.7 cm) long screw.


Spring Bolt Clamping

Spring bolt clamping applies constant tension on the clamping mechanism to compensate for heater elongation once it has been energized. Spring bolt clamping comes with either a 1/4 - 20 X 4" (10.7cm) or 1/4 - 20 X 5" (12.7cm) long screw.


Turnbuckle

Specified where a heater is used to heat an I.D. surface. Use of this mechanism is governed by the heater diameter and width. Obstructions such as shafts passing along the center line of the heater may present an interference problem. 1/4 - 20 X 2 1/2" (63.5 mm) long screw.


Tubular Nozzle Band Diagram