GH42A Cast Iron Change Gear 3-7/16" ID Drop-in replacement for commonly used

Drop-in replacement for commonly used hex nut keyless bushings

and most come with a selection of bore diameters

• Dependable

Includes 2 rubber grommets to reduce vibration & noise

GH42A Cast Iron Change Gear 3-7/16" ID Drop-in replacement for commonly usedBoston 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