GB103A 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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A manual release is also provided

Pressure Angle: 14-1/2 Degree Pressure Angle

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If power fails

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just has eccentric locking insert instead of set screw

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Straight tooth Miter Gears are cut with a generated “Coniflex” tooth form providing increased life and quieter operating conditions

• Double C-Face