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Sealed Back Up Long Life Bearings were specifically designed for Sendzimir mills in Iron and Steel works.  Due to the SAC steel and optimized seal design these bearings achieve long life under high-speed operating conditions. With   excellent lubrication properties and sealing performance to combat issues associated with oil-air lubrication, this bearing innovation enables enhancement of bearing life under contaminated lubrication conditions.

Condition Description

  • Contamination
  • High Load
  • Lubrication


  • Steel and Metals

Product Features

  • NSK's proprietary SAC steel.
  • Optimized seal design allowing oil-air mist to be discharged through the seal lip
  • Reduced number of components
  • Integrated structure - Replacing slinger and snap ring simplified
  • Low friction seal system


  • Longer life (up to twofold) through SAC steel
  • Stable sealing performance at high rotating speeds in response to issues associated with oil-air mist lubrication
  • Seal wear reduction
  • Excellent lubricating properties and sealing performance
  • Reduced seal replacement time
STF 2U 180 - 1A g3 CCG200 UPA
Show Description
2UDouble-Row (Cyllindrical Roller Bearing)
180Nominal Bore Diameter
1ASerial number
g3SAC Steel
CCG200Internal Clearance Symbol
UPATolerance Class Symbol