GB78B 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

self-centering design with mounting flange for use in through-bored components

Diametral Pitch: 20

Click here for spec sheet: UCTX Spec Sheet

Click here for spec sheet: SALF Spec Sheet

Click here for spec sheet: SAPL Spec Sheet

Step Up Adapters are ideal for making the shaft larger

Click here for spec sheets: HUCNPFL Spec Sheet

Greater load capacity compared to SUCSFCS

Click here for spec sheets: UCFC Spec Sheet

Step Down Adapters are ideal for making the shaft smaller

ISO Certificate

Click here for spec sheets: SNASFL Spec Sheet