NSK has developed new ultra-high speed Angular Contact Ball Bearings using the new cage “SURSAVE" for the main spindle of machine tools. 

This cage is applied to the NSKROBUST series of ultra-high speed angular contact bearings. Low NRRO, low heat generation and high-speed performance are achieved with the newly developed cage“SURSAVE”

Condition Description

  • Green environment
  • High Accuracy
  • High Speed


  • Machine Tools

Product Features

  • Optimised internal design
  • Lower vibration and runout of the cage reduce NRRO* by half
  • 20% reduction of heat generation compared to conventional bearings under high-speed conditions
  • 20% faster than conventional bearings

    *NRRO = non-repeatable runout


  • Higher accuracy
  • Higher speed rotation
  • Improve productivity
  • Environmental friendly
  • Reduction of NRRO improves the process surface quality and reduction of heat generation helps to suppress thermal desplacement 


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