NAR5 Steel Stem Pinion Pillow Block Bearings Collars include stainless steel screws

Collars include stainless steel screws

Mounted component moves axially during installation

A shifting of the valve changes direction–even when the air motor is running full open

When choosing a mating spur gear

NAR5 Steel Stem Pinion Pillow Block Bearings Collars include stainless steel screwsBoston Gears stem pinions feature small numbers of teeth that are cut integral to the steel shaft. Using a special, enlarged pitch diameter minimizes the undercutting of the teeth. When run with standard stock spur gears, stem pinions increase the ratios normally found in spur gear drives. Please note: Stem pinions are not intended to be operated with each other, with internal gears, or with eleven tooth spur gears. They will, however, run