GF39B 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

IP69K Flyer

Click here for spec sheet: BUCTP Spec Sheet

Max PV Value: 50

Click here for spec sheet: NAPA Spec Sheet

For applications involving slow rotating or linear motion

Keyway: No KWY or Setscrew

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

Click here for spec sheets: SSBSRFB Spec Sheet

Click here for spec sheet: SBRFB Spec Sheet

• Superior Thermal Capacity

3/16"Bore= #4-40 setscrew

Release is instantaneous