GD81A Cast Iron Change Gear 3.25" Center Distance Click here for spec sheet:

Click here for spec sheet: SUCSP Spec Sheet

Click here for spec sheets: SUCSFB Spec Sheet

Easily installed where major disassembly would otherwise be required

Click here for spec sheets: SUCNPTRS Spec Sheet

Our standard 700 Series - the heart of Boston Gear's speed reducer product line - has been serving many industries reliably for over 40 years

GD81A Cast Iron Change Gear 3.25" Center Distance Click here for spec sheet:Boston 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