GB72B Cast Iron Change Gear 115/230 and cast iron to suit

and cast iron to suit your application’s requirements

dimensions are the same (except "z" is longer

Click here for spec sheet: NAP Spec Sheet

quieter operation

Ball Bearing Type

GB72B Cast Iron Change Gear 115/230 and cast iron to suitBoston 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