GH45A Cast Iron Change GearBoston 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

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email or chat

Friction force stops and holds the motor shaft

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These double C-Face Brakes are direct acting with only one moving part

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and setscrews to accommodate a wide variety of application requirements