SKF Japan 3309 A Angular Contact Ball Bearings -

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Bearing number:719/9 ACE/HCP4A
Size (mm):9x20x6
Bore Diameter (mm):9
Outer Diameter (mm):20
Width (mm):6
d:9 mm
D:20 mm
B:6 mm
d1:12.5 mm
d2:11.76 mm
D1:16.52 mm
r1,2 - min.:0.3 mm
r3,4 - min.:0.15 mm
a:6.9 mm
da - min.:11 mm
db - min.:11 mm
Da - max.:18 mm
Db - max.:19.2 mm
ra - max.:0.3 mm
rb - max.:0.15 mm
dn:13.3 mm
Basic dynamic load rating - C:2 kN
Basic static load rating - C0:0.765 kN
Fatigue load limit - Pu:0.032 kN
Limiting speed for grease lubrication:120000 r/min
Limiting speed for oil lubrication:180000 mm/min
Ball - Dw:3.175 mm
Ball - z:11
Gref:0.09 cm3
Calculation factor - e:0.68
Calculation factor - Y2:1.41
Calculation factor - Y0:0.76
Calculation factor - X2:0.67
Calculation factor - Y1:0.92
Preload class A - GA:17 N
Preload class B - GB:50 N
Preload class C - GC:100 N
Calculation factor - f:1.03
Calculation factor - f1:0.98
Calculation factor - f2A:1
Calculation factor - f2B:1.04
Calculation factor - f2C:1.08
Calculation factor - fHC:1.01
Preload class A:28 N/micron
Preload class B:41 N/micron
Preload class C:54 N/micron
r1,2 min.:0.3 mm
r3,4 min.:0.15 mm
da min.:11 mm
db min.:11 mm
Da max.:18 mm
Db max.:19.2 mm
ra max.:0.3 mm
rb max.:0.15 mm
Basic dynamic load rating C:1.95 kN
Basic static load rating C0:0.765 kN
Fatigue load limit Pu:0.032 kN
Attainable speed for grease lubrication:120000 r/min
Attainable speed for oil-air lubrication:180000 r/min
Ball diameter Dw:3.175 mm
Number of balls z:11
Reference grease quantity Gref:0.09 cm³
Preload class A GA:17 N
Static axial stiffness, preload class A:28 N/µm
Preload class B GB:50 N
Static axial stiffness, preload class B:41 N/µm
Preload class C GC:100 N
Static axial stiffness, preload class C:54 N/µm
Calculation factor f:1.03
Calculation factor f1:0.98
Calculation factor f2A:1
Calculation factor f2B:1.04
Calculation factor f2C:1.08
Calculation factor fHC:1.01
Calculation factor e:0.68
Calculation factor (single, tandem) Y2:0.87
Calculation factor (single, tandem) Y0:0.38
Calculation factor (single, tandem) X2:0.41
Calculation factor (back-to-back, face-to-face) Y1:0.92
Calculation factor (back-to-back, face-to-face) Y2:1.41
Calculation factor (back-to-back, face-to-face) Y0:0.76
Calculation factor (back-to-back, face-to-face) X2:0.67
Mass bearing:0.007 kg

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