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Highly rigid Double-Row Cylindrical Roller Bearings for Lathe Main Shaft applications is the first-ever precision bearing to adopt an PPS resin cage (designated TB in NSK), while maintaining its functionality to deliver high accuracy & high rigidity in ultra high-speed applications.

Condition Description

  • High Speed
  • High Temperature


  • Automotive
  • Machine Tools

Product Features

  • High strength, roller guided resin cage (TB)
  • Outer ring standard with  lubrication hole
  • Low temperature rise due to optimal internal design and cage configuration
  • TB cage allows faster running speeds


  • TB cage temperature resistance up to 220°C
  • TB cage has offers a lower temperature rise compared to conventional cages.
  • Grease life in the TB cage is typically more than 8 times higher than that of conventional & brass cages
  • Range includes NNU type which has double rib outer and NN type which features excellent grease discharge during ‘running in’
  • Outer ring is available with standardized lubrication hole and groove (E44) specification


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