NBR8 Steel Stem PinionBoston 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

Max V Value: 750 fpm

They provide consistent high output torque even at low operating speeds

including plain

Click here for spec sheets: BUCNPFB Spec Sheet

They are also the smoothest

Click here for spec sheet: SALF-H4 Spec Sheet

We’ve designed the product line to include three different series in order to meet a broader array of application requirements

Click here for spec sheets: UCFCF Spec Sheet

Click here for spec sheets: SUCNPFB Spec Sheet

Center Distance: 3

medium taper

Click here for spec sheet: SBF Spec Sheet