GD50B 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

• Full Torque Stop

Mounted component moves axially during installation

Click here for spec sheets: HUCNPF Spec Sheet

Heavy guage one-piece housing has rust proof plated finish

They are also the smoothest

Click here for spec sheet: SNATP Spec Sheet

high impact and abrasion

Click here for spec sheets: SUCNPHA Spec Sheet

stem pinions

Boston Gear manufactures both 14 1/2° and 20° PA

high impact & abrasion

the SNASFB has an eccentric locking bearing insert