GA21 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

Click here for spec sheets: CUCTF Spec Sheet

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

Traditional cost effective rigid coupling design provides torque transmission and alignment

Reducer Material: Stainless Steel

non-self-centering design for use in counter-bored components

Pressure Angle: 14-1/2 Degrees

Click here for spec sheets: BUCTF Spec Sheet

Installation & Operation Manual

Click here for spec sheets: SUCNPFB Spec Sheet

Step Down Adapters are ideal for making the shaft smaller

With Teflon as their major ingredient

they are ideally suited for applications where normal lubrication is difficult or impossible to provide