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NSK UK 609Z Ball Bearings image

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Bearing number:71808 ACD/HCP4
Size (mm):52x40x7
Bore Diameter (mm):52
Outer Diameter (mm):40
Width (mm):7
d:40 mm
D:52 mm
B:7 mm
d1:44.1 mm
d2:44.1 mm
D1:48.1 mm
r1,2 - min.:0.3 mm
r3,4 - min.:0.15 mm
a:14.3 mm
da - min.:42 mm
db - min.:42 mm
Da - max.:50 mm
Db - max.:51.2 mm
ra - max.:0.3 mm
rb - max.:0.15 mm
dn:44.5 mm
Basic dynamic load rating - C:4.5 kN
Basic static load rating - C0:4.6 kN
Fatigue load limit - Pu:0.196 kN
Limiting speed for grease lubrication:28000 r/min
Limiting speed for oil lubrication:43000 mm/min
Ball - Dw:3.175 mm
Ball - z:29
Gref:0.31 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:40 N
Preload class B - GB:120 N
Preload class C - GC:240 N
Calculation factor - f:1.23
Calculation factor - f1:0.97
Calculation factor - f2A:1
Calculation factor - f2B:1.09
Calculation factor - f2C:1.17
Calculation factor - fHC:1.02
Preload class A:93 N/micron
Preload class B:145 N/micron
Preload class C:197 N/micron
r1,2 min.:0.3 mm
r3,4 min.:0.15 mm
da min.:42 mm
db min.:42 mm
Da max.:50 mm
Db max.:51.2 mm
ra max.:0.3 mm
rb max.:0.15 mm
Basic dynamic load rating C:4.49 kN
Basic static load rating C0:4.55 kN
Fatigue load limit Pu:0.196 kN
Attainable speed for grease lubrication:28000 r/min
Attainable speed for oil-air lubrication:43000 r/min
Ball diameter Dw:3.175 mm
Number of balls z:29
Reference grease quantity Gref:0.31 cm³
Preload class A GA:40 N
Static axial stiffness, preload class A:93 N/µm
Preload class B GB:120 N
Static axial stiffness, preload class B:145 N/µm
Preload class C GC:240 N
Static axial stiffness, preload class C:197 N/µm
Calculation factor f:1.23
Calculation factor f1:0.97
Calculation factor f2A:1
Calculation factor f2B:1.09
Calculation factor f2C:1.17
Calculation factor fHC:1.02
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:0.029 kg

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