SKF 71909ACD/HCP4A bearing

SKF 71909ACD/HCP4A bearing | Angular Contact Ball Bearing | 45x68x12

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    Angular contact ball bearings, super-precision 71909 ACD/HCP4A

  • Bearing number : 71909 ACD/HCP4A
  • Size (mm) : 45x68x12
  • Brand : SKF
  • Bore Diameter (mm) : 45
  • Outer Diameter (mm) : 68
  • Width (mm) : 12
  • Bearing dimensions and specification in SKF catalogue:

  • d - 45 mm
  • D - 68 mm
  • B - 12 mm
  • d1 - 52.6 mm
  • d2 - 52.6 mm
  • D1 - 60.4 mm
  • r1,2 - min. - 0.6 mm
  • r3,4 - min. - 0.3 mm
  • a - 19.3 mm
  • da - min. - 48.2 mm
  • db - min. - 48.2 mm
  • Da - max. - 64.8 mm
  • Db - max. - 66.6 mm
  • ra - max. - 0.6 mm
  • rb - max. - 0.3 mm
  • dn - 54.2 mm
  • Basic dynamic load rating - C - 12.4 kN
  • Basic static load rating - C0 - 9 kN
  • Fatigue load limit - Pu - 0.38 kN
  • Limiting speed for grease lubrication - 20000 r/min
  • Limiting speed for oil lubrication - 34000 mm/min
  • Ball - Dw - 6.35 mm
  • Ball - z - 23
  • Gref - 1.62 cm3
  • Calculation factor - e - 0.68
  • Calculation factor - Y2 - 0.87
  • Calculation factor - Y0 - 0.38
  • Calculation factor - X2 - 0.41
  • Calculation factor - Y1 - 0.92
  • Calculation factor - Y2 - 1.41
  • Calculation factor - Y0 - 0.76
  • Calculation factor - X2 - 0.67
  • Preload class A - GA - 80 N
  • Preload class B - GB - 160 N
  • Preload class C - GC - 320 N
  • Preload class D - GD - 640 N
  • Calculation factor - f - 1.11
  • Calculation factor - f1 - 0.98
  • Calculation factor - f2A - 1
  • Calculation factor - f2B - 1.07
  • Calculation factor - f2C - 1.12
  • Calculation factor - f2D - 1.17
  • Calculation factor - fHC - 1.04
  • Preload class A - 111 N/micron
  • Preload class B - 143 N/micron
  • Preload class C - 187 N/micron
  • Preload class D - 249 N/micron
  • Mass bearing - 0.12 kg

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