Mood 3 Products

Long-life Pinion Shaft with cage and roller assembly


Planetary gears in swing/travel reduction gears for construction and mining machinery are used in severe lubrication conditions where abrasion powder from gears and other foreign material can contaminate the lubricant.  NSK's Long-life Pinion Shaft with Cage and Roller Assembly (especially for Hydraulic Excavators) provides a superior service life (increase more than twice), offers greater reliability and improved surface fatigue strength.

Condition Description

  • Contamination
  • High Load
  • High Speed
  • Lubrication


  • Construction
  • Quarrying, Mining & Construction

Product Features

  • Long-life technology
  • Compact and lightweight
  • Special heat treatment applied to shaft and rollers
  • Mirror-smooth finish on shaft & rollers ensures adequate oil film thickness
  • Corresponding Size: Shaft diameter up to 36mm, shaft length up to 100mm
  • Corresponding Size: Inscribed circle diameter up to 36mm


  • Improved oil thickness on pinion shaft and rollers reduces fatigue flaking and increases resistance to contamination
  • Special heat treatment combats surface fatigue
  • Service life more than twice that of conventional bearings
  • Improves time between maintenance intervals
  • Compact size enables downsizing
  • * Inform NSK of preferred size for simultaneous delivery of shaft with assembly.

FBNP- 30 50 20
Show Description
FBNP- Type of Cage
30 Inscribed Circle Diameter (mm)
50 Cicumscribed Circle Diameter (mm)
20 Width (mm)