NU Bearing series

With the rolling elements located on the outer ring, this bearing has an inner ring which slides in both directions and is commonly found in motors.

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  • SKF (857)
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Measurement

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id (mm)

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od (mm)

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Width (mm)

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id (In)

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od (In)

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  • 3.3/4 (1)
  • 4.1/2 (2)

Width (In)

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Lubrication

  • Solid oil (20)

Clearance

  • Normal Clearance (Cn) (1106)
  • C3 Clearance (1074)
  • C4 Clearance (280)
  • C2 Clearance (5)
  • C5 Clearance (4)

Contact Angle

  • Inner ring with crowned raceway (2)

Accuracy

  • P6 Class tolerance (31)
  • P5 Class tolerance (14)

Other Variations

  • SQ77 = Electrically Insulated (Insulation on the outer ring) (32)
  • VA301 = Bearing for railway vehicle traction motors (27)
  • L4B = Bearing rings and rollers black oxidized (26)
  • B20 = Reduced width tolerance (20)
  • VA3091 = Bearing for railway vehicle traction motors (10)
  • SQ1 = Electrically Insulated (special specification for electrical motors) (9)
  • VQ015 = Inner ring with crowned raceway for increased permissible misalignment (3)
  • Bearing for railway vehicle traction motors (2)
  • Bearing for railway axleboxes (1)

Cage material

  • Brass cage (1473)
  • Polymer cage (618)
  • Steel cage (376)

1-20 of 2504 products