Text version of the page

W A T L O W

Note: Upward arrows are up toand not including specified watt density. Downward arrows are greater than or equal to specified watt density.

Barrel Heaters

MI Band

•Review Watt Density chart onpage 20 to ensure that the application does not exceed the maximum watt density at operating temperature after applying derating factors.•Locate clamping guideline for unitdiameter, width and watt density.•Description of guideline lettersare below.•

Applications andTechnical Data

MI Barrel Clamping Matrix Application Guide

Dia.Width 8> 10 10> 12 12> 14 14> 16 16> 18 18> 20 20> 22 22> 24 24> 26 26> 28
Injection Molding 1 1 1
1 4
1 1 4
1 1 4
1 1 4
1 1 4
1 1 4
1 1 4
1 1 1 1 1 2 in. 4
2 in. 2 in. 2 in. 1
2 in. 2 in. 1
2 in. 2 in. 1
2 in. 4
1 2 in. 2 1
2 in. 2 in. 1
2 in. 2 in. 1
2 in. 2 in. 1
2 in. 4
2 in. 1
2 in. 4
2 in. to 4
in. to 7
in. to 4
in. to 7
in. to 4
in. to 7
in. to 4
in. to 7
in. to 4
in. to 7
in. to 4
in. to 7
in. to 4
in. to 7
in. to 4
in. to 7
in. to 4
in. to 7
in. to 4
in. to 7
in. Barrel Heaters 807570656055504540353025201510
2 B Above Recommended Watt DensitiesConsult Engineering1 B B B B
Watt Density–W/in B D D D D A D D D D D D D D D D A A A A A C C C C C C C C C C C C C C

A=Standard clamping, expandable or one piece construction WidthClamp Points at Each Gap B=Spring clamps, expandable or one piece construction * 127 mm (5 in.)3C=Spring clamps, at one gap, welded barrel nuts at other gap * 76.2 mm (3 in.)2D=Spring clamps, spring clamps at both gaps <76.2 mm (3 in.)1

MI Installation Procedures - For Standard Product

1.Install heaters over a cleansurface.2.After installing the unit, begin totighten the clamp screw. The standard clamping screw is 6.35 mm-508 x 31.75 mm (0.25 in.-20 x 1.25 in.), nickel plated allen head cap screw. Begin tightening the clamp bars. If the clamp bars appear not to have seated, tap the clamp bars with a small hammer to insure the bars are well seated in the angle formed by the 60 degree bent tab and the heater. 3.If the bar has multiple screws,alternately tighten the screws at10 lb-in. as you would the lug nutson a car wheel to insure evenloading.4.Torque all screws toapproximately 80 lb-in. (9-N-M).5.When installing terminal lugs,torque the top nuts to 15-20 lb-in.or 2.26 N meters. 21