Linear Guides RCA: Corrosion


Damage Condition

Corrosion on raceways and balls.

Possible Causes

  • Intrusion of water or corrosive substance
  • Inadequate lubricant
  • Improper storage


  • Improve sealing function
  • Change to higher anti-acid material or better surface treatment
  • Review the lubrication system
  • Review the storing condition

Corrosion at Ball Slider

Part: Ball slider
Symptom: Corrosion on raceways
Cause: Rusted raceways and balls caused by chlorinated cutting coolant penetrating the protective covers and attaching the ball slide

Corrosion at Balls

Part: Balls
Symptom: Corrosion on balls
Cause: Aggressive cutting coolant attacked the ball surface


Source: NSK