GH78A 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

Click here for spec sheets: CUCNPFB Spec Sheet

Pre-Lubricated: No

Click here for spec sheet: NANF Spec Sheet

Click here for spec sheet: SALF-H4 Spec Sheet

Click here for spec sheets: BUCNPFL Spec Sheet

Click here for spec sheet: SAPL Spec Sheet

• Continuous Duty

Click here for spec sheets: CUCNPF Spec Sheet

self-centering design without mounting flange for use in through-bored components

Acetal Copolymer collars will not rust or corrode

ANGULAR DISPLACEMENT — Single 45° — Double 90°