GD53B 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

Clamping coupling portion will not mar the shaft

Brake coil leads connect directly to motor leads so that power is simultaneously supplied to both brake and motor

Click here for spec sheet: NANF Spec Sheet

Pressure Angle: 20 Degrees

the SNAST has an eccentric locking bearing insert

B-Type Seals

high impact and abrasion

Click here for spec sheets: BUCNPF Spec Sheet

Max P Value: 480 psi

Click here for spec sheets: SUCTPA Spec Sheet

Click here for spec sheet: SBRFB Spec Sheet

Easily installed where major disassembly would otherwise be required