GB128A 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

self-centering design with mounting flange for use in through-bored components with smaller pitch/outside diameters

Click here for spec sheet: BUCNPP Spec Sheet

Click here for spec sheet: SNASP Spec Sheet

Base Mounting Attachment: No Base

Click here for spec sheet: UCFL Spec Sheet

• Continuous Duty

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

Click here for spec sheet: SBRFB Spec Sheet

Click here for spec sheet: SBP Spec Sheet

Boston Gear spur gears are designed to transmit motion and power between parallel shafts

Housing is crimped together at bolt holes

Click here for spec sheets: CUCTFB Spec Sheet