GB89A 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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allowing them to spin on an intermediate shaft

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Click here for spec sheet: HUCPA Spec Sheet

Click here for spec sheet: UC Spec Sheet

Click here for spec sheets: BUCNPF Spec Sheet

Click here for spec sheets: BUC Spec Sheet

Click here for spec sheet: UCFX Spec Sheet

Allows you room to re-bore the ID without damaging the clamp screws

Recessed screw head provides an outside surface free of major projections for safety

Click here for spec sheet: CSA Spec Sheet

the CUCSTRS has a Hard Chrome bearing insert and a Stainless Steel housing