GB45B 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: SUCNPT Spec Sheet

Click here for spec sheets: CUCTF Spec Sheet

And remember that spur gears and rack are available via our Guaranteed Same Day Shipment Program

Many are available with or without hubs

Click here for spec sheet: UCPX Spec Sheet

Can be mounted vertically or horizontally

Ideal for space constrained areas

Drop-in replacement for commonly used hex nut keyless bushings

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Recessed screw head provides an outside surface free of major projections for safety

the SNASPA has an eccentric locking bearing insert

ANGULAR DISPLACEMENT — Single 45° — Double 90°