Gruetzner

Tag: RCA

Bearing Damage by Load / Contact Patterns RCA: Typical RB Running...

 Typical RB Running Traces Typical Running Traces of Roller Bearings (I) shows the outer ring running trace when a radial load is properly applied to a...

Damage by Load/Contact Patterns RCA: Typical DGBB Running Traces

  Typical Running Traces of Deep Groove Ball Bearings (A) shows the most common running trace generated when the inner ring rotates under a radial load...

Linear Guides RCA: Damaged Ball Recirculation Parts

  Damage Condition Balls become free from the ball slide due to broken plastic ball re-circulation parts. Possible CausesBall re-circulation disabled by abnormal wear caused by...

Linear Guides RCA: Corrosion

  Damage Condition Corrosion on raceways and balls. Possible CausesIntrusion of water or corrosive substance Inadequate lubricant Improper storageCountermeasuresImprove sealing function Change to higher anti-acid...

Linear Guides RCA: Electrolytic Corrosion

  Damage Condition Pits like spot corrosion on balls and raceways. Possible CausesCaused by an electric current, creating sparks through a thin oil film, between the...

Linear Guides RCA: Flaking

  Damage Condition The rolling contact surface of the rail, the ball slide and the ball flakes away like scales. Possible CausesNatural life of a linear...

Ball Screw RCA: Breakage of Shaft End

  Damage Condition Shaft end (mainly bearing journal) broke completely. Possible CausesRotational bending fatigue caused by misalignment of screw shaft (the bearing journal was forced to...

Ball Screw RCA: Breakage of Ball Recirculation Parts

  Damage Condition Damage on the tongue of ball return tube (ball pick up finger). Possible CausesRotational speed exceeded the permissible rotational speed (d•N)CountermeasuresUse of...

Ball Screw RCA: Fretting

  Damage Condition Frettings are on the raceways caused by a relative small amplitude of rubbing between mated contact surfaces. (It is also called fretting corrosion...

Ball Screw RCA: Wear

  Damage Condition Severe friction resulted in serious wear on the rolling contact surface of raceways. Possible CausesInsufficient lubrication Intrusion of contamination Poor assemble accuracy (Misalignment)CountermeasuresReview...