GB27 Steel 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

Max V Value: 750 fpm

Friction discs rotate with the motor shaft and are free to move axially on the hub

a same-hand helix angles must be used

Click here for spec sheets: HUCNPPA Spec Sheet

Input Style: No Flange (projecting shaft)

Click here for spec sheets: BUCTFL Spec Sheet

Splines in crease disc life because the many con tact points between hub and discs reduce the concentration of stresses encountered with non-splined hubs having only a few contact points

Click here for spec sheet: SAFL Spec Sheet

Center Distance: 5

Bearing insert with 2 set screws has longer inner race for added load support

Housings are made of aluminum alloy with all mounting surfaces precision machined

Click here for spec sheets: CUC Spec Sheet