GB21 Steel 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

and have excellent wear and corrosion resistance

Friction discs rotate with the motor shaft and are free to move axially on the hub

Provides greater axial holding power than set screw collars

web with lightening holes

Click here for spec sheet: BUCNPP Spec Sheet

Heavy guage one-piece housing has rust proof plated finish

Pilot bore can be opened to the nominal ID reflected in the part number

high impact and abrasion

the SNASHA has an eccentric locking bearing insert

Click here for spec sheets: HUCNPFL Spec Sheet

These specially designed collars fit over rail assemblies on precision shafting

Nylatron® GS (GS) is a trademark for molybdenum disulfide filled nylon produced by the Polymer Corp