Gruetzner

Tag: Ball screw

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: Indentations

  Damage ConditionIndentations on the raceway at each ball location similar to the deformation caused by a Brinell Hardness Tester (Brinelling) Indentations on a...

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...

Contributing to the Environment with a New Problem Solving Process “High-Durability...

 A key mission of NSK is to create products that contribute to the environment. Using a variety of approaches, NSK is moving closer to...

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...

Ball Screw RCA: Flaking

  Damage Condition The raceways of the screw shaft and ball nut and/or the surface of the ball peel off like scales because of fatigue. Possible Causes...

Ball screw drives with nut cooling for machine tools – ...

  Kammerer Gewindetechnik GmbH has developed ball screw drives with cooled nut for use in machine tools. The cooled nut makes it easier to cool...