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W A T L O W

Plastics catalog - 7347 Barrel Heaters

Ceramic KnuckleBand

Mechanical Overall thickness: 12.7mm (0.5 in.)Minimum width: 38.1 mm (1.5 in.) Maximum width: 246 mm (9.69 in.) Minimum I.D.: 50.8 mm (2 in.) Maximum I.D.: 381 mm (15 in.)* Width tolerance: ±3.175 mm (0.125 in.) Standard gap: 6.35 mm (0.25 in.) *One piece construction Specifications Electrical Resistance tolerance: -10 percent (+5 percent) Wattage tolerance: +10 percent (-5 percent) Maximum watt density: 114 W/cm
2 (45 W/in
2 )Maximum operating temperature: 760°C (1400°F)

Termination Options

Injection Molding Barrel Heaters Post Terminals are the standard termination, providingquick connection with ring or fork connectors or buss strips, Stainless Steel Braid method includes a loose metalbraid that is welded to the terminal box with a coupler. This provides excellent abrasion protection and flexibility. Leads are attached to posts with ring connectors.
1 �
4 -20 inch thread and includes double nuts andwashers. Standard terminal location is 180°from gap. Flexible Lead Wire exits tangential to heater and includesleads connected to the post terminals with ring connec- tors. This termination method requires a terminal box. Flexible Stainless Steel Hose is welded to the terminalbox with a coupler. This terminal option provides superi- or mechanical protection where lead abrasion is a prob- lem. Leads are attached to posts with ring connectors.
Note: These are all standard termination options, for special constructions please consult factory. 15