GA68B 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

Provides torque transmission & alignment

Click here for spec sheets: SNA Spec Sheet

Click here for spec sheets: SNASF Spec Sheet

Many are available with or without hubs

Click here for spec sheets: SUCTFL Spec Sheet

Click here for spec sheet: SBLP Spec Sheet

Click here for spec sheets: HUCNPFL Spec Sheet

Straight/Spiral Tooth: Straight Tooth

depending upon the diametrical pitch

3/16"Bore= #4-40 setscrew

see SNA vs SUC pages for bearing insert dimensions)

Splined Hub