GB85A Cast Iron Change Gear 43 Teeth Click here for spec sheets:

Click here for spec sheets: SNATF Spec Sheet

When used with Boston Gear worms

self-centering design for use in through-bored components with extremely high torque and/or bending requirements

Pressure Angle: 20 Degrees

Click here for spec sheet: SA Spec Sheet

GB85A Cast Iron Change Gear 43 Teeth Click here for spec sheets: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