GA70B 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

Porous flanged bronze bearing is press-fit in sturdy zinc die cast sphere with felt strip for lubrication

Pre-Lubricated: No

Click here for spec sheets: BUCNPFL Spec Sheet

• Continuous Duty

Straight/Spiral Tooth: Straight Tooth

These specially designed collars fit over rail assemblies on precision shafting

When used with Boston Gear worms

Note: SNA bearings not in catalog

a spring loaded pressure plate (magnet armature) presses against the rotating discs

Medium Duty

depending upon the diametrical pitch

the CUCSTRS has a Hard Chrome bearing insert and a Stainless Steel housing