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Damage Condition Possible Causes Countermeasures
Severe friction resulted in serious wear on the rolling contact surface of raceways.
  • Insufficient lubrication
  • Intrusion of contamination
  • Poor assemble accuracy (Misalignment)
  • Review the lubricant and lubrication method
  • Improve sealing capability
  • Take measures against misalignment

 

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Wear 1

Part: Ball nut
Symptom: Serious wear due to severe friction
Cause: Severe wear developed due to grease washout from the ball nut when overhauling the ball screw

Wear 2

Part: Screw shaft
Symptom: Serious wear due to severe friction
Cause: Abnormal wear caused by fine iron contamination

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