Highly rigid Double-Row Cylindrical Roller Bearings for Lathe Main Shaft applications. This is the first-ever precision bearing to adopt an PPS resin cage (designated TB in NSK), whilst 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 has standard lubrication hole.
  • Low temperature rise due to optimum internal design and cage configuration.
  • TB cage allows faster running speeds


  • TB cage temperature resistance up to 220°C.
  • TB cage has a lower temperature rise than 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’.
  • The outer ring is available with standardised lubrication hole and groove (E44) specification. This allows easy interchange.


NSK uses third-party services that help us to improve our web site and show you more interesting content. In order to use these services, we need your consent. This can be revoked at any time. More information can be found here Link to privacy policy.