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NSK has developed a range of long-life, large-size tapered & cylindrical roller bearings for gearboxes in large industrial machinery such as wind power generators & mining machinery. Its special material & customised heat treatment technology decrease early damage caused by white structure flaking. Under such conditions, the bearings' life can be enhanced seven times in comparison to conventional bearings.

Condition Description

  • Compact Environment
  • High Load
  • Lubrication


  • Power Generation
  • Power Transmission
  • Quarrying, Mining and Construction
  • Wind Energy

Product Features

  • Special material: optimised chemical composition
  • Customised heat treatment process
  • Available TRB and CRB
  • Black oxide coating available on request
  • Interchangeable with standard products


  • High resistance to white structure flaking
  • Increased fatigue life compared to standard bearings
  • Increased level of residual stress leads to higher material resistance
  • High fracture toughness
  • High dimensional stability