GH42A Cast Iron Change Gear 3-7/16" ID and most come with a

and most come with a selection of bore diameters

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and cast iron to suit your application’s requirements

The pressure plate retracts against torque springs by magnetic force when the magnet is energized

GH42A Cast Iron Change Gear 3-7/16" ID and most come with aBoston Gear change gears are used primarily on machine tools to provide different cutting speeds while using a constant speed input. All Boston Gear change gears are manufactured with a double key to accept the compound steel bushings that connect two gears together, allowing them to spin on an intermediate shaft. The change gears we stock range from 20 tooth through 128 tooth gears, in one tooth increments, depending upon the diametrical pitch, for a