GB92A 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

Boston Gear change gears are used primarily on machine tools to provide different cutting speeds while using a constant speed input

High axial load and torque capacity and does not mar the shaft

Click here for spec sheet: CUCNPP Spec Sheet

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

Click here for spec sheets: SUCSF Spec Sheet

in one tooth increments

Click here for spec sheet: UCFB Spec Sheet

These specially designed collars fit over rail assemblies on precision shafting

Click here for spec sheets: SSER Spec Sheet

Effective on both hard and soft shafts

Drop-in replacement for commonly used hex nut keyless bushings

Click here for spec sheet: CSB Spec Sheet