GH21 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

self-centering design with mounting flange for use in through-bored components

Click here for spec sheets: Clamp-Lok Catalog

Click here for spec sheets: CUCTF Spec Sheet

leaded tin bronze

B-Type Seals

Output Bore/Shaft Diameter: 1

Click here for spec sheets: SNASF Spec Sheet

Movement is limited to a spring loaded pressure plate

Ideal for space constrained areas

When used with Boston Gear worms

just has eccentric locking insert instead of set screw

For shafts at 90°