GA81B Cast Iron Change Gear 65 Teeth These unique two-piece rigid clamping

These unique two-piece rigid clamping couplings come with an undersized ID

They are also the smoothest

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GA81B Cast Iron Change Gear 65 Teeth These unique two-piece rigid clampingBoston 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