GB86A 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

Porous flanged bronze bearing is press-fit in sturdy zinc die cast sphere with felt strip for lubrication

self-centering design for use in through-bored components with high torque and/or bending requirements

Click here for spec sheet: SAPA Spec Sheet

Many are available with or without hubs

Click here for spec sheets: BUC Spec Sheet

Click here for spec sheets: BUCTF Spec Sheet

Piloted Flange Units

Click here for spec sheet: SA Spec Sheet

high impact & abrasion

ISO Certificate

3/16"Bore= #4-40 setscrew

• Superior Disc Life