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Ships within 48 hours · Estimated delivery Aug 29 - Sep 3
Product Note: BOStonE F-1 bearings may be green
Click here for spec sheet: UCFB Spec Sheet
When used with Boston Gear worms
Number of Threads: Double Thread
GB21 Steel Change Gear 3.25" ID Product Note: BOStonE F-1 bearingsBoston 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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