NBR6 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

or with eleven-tooth spur gears

Click here for spec sheet: BUCTP Spec Sheet

15 service factor

Self sealing vanes

Straight/Spiral Tooth: Spiral Tooth

Type: Roll end

Center Distance: 1

Spring-lid oil cap can be positioned 4 ways

All Boston Gear change gears are manufactured with a double key to accept the compound steel bushings that connect two gears together

• Superior Thermal Capacity

Click here for spec sheets: SUCSFLX Spec Sheet

Keyway Size: No KWY or Setscrew