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      Your current location: Home > Technical center > Q&A > Technical Matters
      Technical Matters

      Case of Damage -Pinching

      2013-08-19
      ?
      Damage mode Causes? Solutions
      ● by pinching, it means accumulation of parts of the tiny burns on the gliding surface leads to surface damage
      ● linear scars of? the circumferential direction of raceways and rolling surface
      ● axle toroidal
      pendulum scar on roller end surface
      ● pinching at the roller end surface
      ● overload, excessive preload
      ● poor lubrication
      ● foreign particles
      ● inner and outer rings misalignment, shaft deflection
      ● poor precision of axle and bearing box?
      ● check the bearing load?
      ● appropriate preload?
      ● improve lubricant and lubricating method
      ● check the shaft and housing precision??

      ● spherical? roller bearing inner ring
      ● squeeze on inner ring flange surface
      ● caused by roller skidding due to acceleration and deceleration?

      ● inner ring of thrust tapered roller bearing
      ● squeeze on inner ring flange surface
      ● due to intrusion of wear powder; overload leads to oil film hot breaking

      ● roller of double row cylindrical roller bearing?
      ● squeeze on roller end face
      ● poor lubrication, excessive axial load
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