GA71B 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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Boston Gear offers worm gears manufactured from a variety of materials

Heavy guage one-piece housing has rust proof plated finish

Note: This is the spec sheet for the set screw Locking version

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

If power fails

Center Distance: 1

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

Engineering Data

Click here for spec sheet: HUCT Spec Sheet

the SNASPA has an eccentric locking bearing insert

Click here for spec sheets: CUC Spec Sheet