GD87A 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 sheet: UCPL Spec Sheet

Center Distance: 2

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Output Bore/Shaft Diameter: 1

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Self-lubricating bearings resist corrosions

Extra thick non-conductive rubber liner corrects misalignment up to 2° while reducing noise & vibration

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quieter operation

and most come with a selection of bore diameters

they are ideally suited for applications where normal lubrication is difficult or impossible to provide