GB55B 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

Mounted component remains fixed axially during installation

Clamping coupling portion will not mar the shaft

Click here for spec sheet: SNASP Spec Sheet

AMBIENT TEMPERATURE — 180°F

Click here for spec sheet: NAPL Spec Sheet

Click here for spec sheet: SAPA Spec Sheet

Click here for spec sheets: CUCNPHA Spec Sheet

Pressure Angle: 14-1/2 Degree Pressure Angle

These double C-Face Brakes are direct acting with only one moving part

Drop-in replacement for commonly used hex nut keyless bushings

Click here for spec sheet: SBP Spec Sheet

Heavy-duty Shrink Disc external clamping device