GB84A 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

web with lightening holes

Click here for spec sheet: NAPL Spec Sheet

A manual release is also provided

Click here for spec sheets: BUCNPFL Spec Sheet

self-centering design for use in through-bored components with high torque and/or bending requirements

Pressure Angle: 14-1/2 Degree Pressure Angle

Click here for spec sheet: UCFX Spec Sheet

Catalog Product Section

Click here for spec sheet: SAFL Spec Sheet

One-Piece Housing has rust-proof plated finish

• Superior Disc Life

the SNATPA has an eccentric locking bearing insert