GF77A 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

Click here for spec sheets: Clamp-Lok Catalog

A manual release is also provided

Click here for spec sheet: NAT Spec Sheet

Traditional cost effective rigid coupling design provides torque transmission and alignment

such as acetal

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Catalog Product Section

Note: SNA bearings not in catalog

a spring loaded pressure plate (magnet armature) presses against the rotating discs

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white or any other color

• Double C-Face