GH69A 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

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AMBIENT TEMPERATURE — 180°F

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Includes 2 set screws

And don’t forget Boston Gear’s Guaranteed Same Day Shipment program – revolutionary premium free guaranteed same day shipment for in-stock items

and cast iron and are manufactured in a variety of styles

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

Splines in crease disc life because the many con tact points between hub and discs reduce the concentration of stresses encountered with non-splined hubs having only a few contact points

ISO Certificate

white or any other color

Our standard 700 Series - the heart of Boston Gear's speed reducer product line - has been serving many industries reliably for over 40 years