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W A T L O W

Plastics catalog - 7347 Barrel Heaters

MI Band

Variations

Outside Diameter Heater Continued hole size and MI Band Heater With Holes location. 76.2 mm (3 in.) insidediameter minimum.Two fiberglass insulated lead wiresrated to 450°C (840°F) exit a metal braid 180 degrees opposite from gap, Type B outside diameter designed and constructed to matewith inside diameter of cylinders. To order, specify outside diameter MI Band heaters with holes areavailable on all widths except 25.4 mm (1 in.) wide. Consult the Watlow factory in St. Louis, Missourifor hole sizes and location restraints.To order, specify heater. Note that 76.2 mm (3 in.) is the minimum cylinder I.D. springloaded clamping.
11 mm(0.420 in.)22 mm(0.875 in.) Injection Molding Barrel Heaters

Clamping Variations

Tig Welded Barrel Nuts With Spring Loaded Clamping
147 mm (5.8 in.) Welded barrel nuts with springloaded clamping are used during start-up to maintain a tight heater fit on large barrels. This clamping variation is standard for all MI Barrel heaters that are greater than 355mm (14 in.) in diameter and 38 mm (1.5 in.) or greater in width.Refer to MI Barrel Clamping Matrix Application Guide, page 21. For smaller diameter heaters, this is an option and must be ordered separately. To order, specify
19 mm(0.75 in.) Tig Welded Barrel Nuts tig welded barrelnuts and gap dimension whenordering. An ideal way to provide access for instrumentation is to specify an oversized gap between the heaterends. If the clamp bar screw interferes with the positioning of the instrumentation device, weldedbarrel nuts are recommended. To order, specify
14 mm(0.563 in.) Tig Welded Low Profile Tig Welded Barrel Nuts lowprofile tig welded barrel nuts . Low profile barrel nuts are availableon all widths. Low profile barrel nuts have a clearance of 10 mm (0.406 in.). To order, specify low profile clamp bars.Low Profile Clamp Bars
I.D. Low profile clamp bars are availableon both one 25 mm (1 in.) and 38 mm (1.5 in.) wide heaters, for wider widths consult factory. Thebars are 6 mm (0.25 in.) diameterwith an 8-32 screw. To order, specify
11 mm(0.45 in.) 25