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Feature 1: Reliable installation

Hard-to-loosen ball-point set screws

To secure the bearing to the shaft, ball-point set screws are used. An exclusive NTN design, the ball-point set screw has a hardened steel ball at the end of the set screw that reliably locks the bearing to the shaft, even when subjected to vibrations or impact loads.

The major advantages of ball-point set screw

  • Reduced fretting corrosion at the tip of the set screw - The hardened steel ball point set screw significantly reduces fretting corrosion. Other kinds cause fretting as they are softer.
  • Can be reused repeatedly - the hardened steel ball does not deform when tightened where conventional set screw tips are deformed once they are tightened.