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Product Catalog

Cylindrical Roller Bearing

Inquiry

639-Z 639-2Z 639-RZ 639-2RZ 639-RS1 639-2RS1

Principal dimensions (mm)
  • d: 9
  • D: 30
  • B: 10
  • r 1,2 min: 0.6
Basic load ratings (kn)
  • Cr: 5.100
  • Cor: 2.230
Speed ratings(r/min)
  • Grease -2Z -2RZ: 23000
  • Grease -2RS1: 16000
  • Oil: 29000
Bearing No.
  • -Z: 639-Z
  • -2Z: 639-2Z
  • -RZ: 639-RZ
  • -2RZ: 639-2RZ
  • -RS1: 639-RS1
  • -2RS1: 639-2RS1
Fitting dimension (mm)
  • d a min: 12.6
  • D a max: 25.8
  • r a max: 0.5