JW8549/JW851 TIMKEN Cylindrical Roller Radial Bearings - FBJ needle roller bearings-SINGAPORELTD.

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JW8549/JW851 TIMKEN Cylindrical Roller Radial Bearings image

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JW8549/JW851 TIMKEN Cylindrical Roller Radial Bearings Information techniques

Bearing number:71920 ACB/HCP4AL
Size (mm):140x100x20
Bore Diameter (mm):140
Outer Diameter (mm):100
Width (mm):20
d:100 mm
D:140 mm
B:20 mm
d1:114.92 mm
d2:113.16 mm
D2:128.7 mm
b:2.2 mm
C1:10.9 mm
C2:4.5 mm
C3:2.9 mm
r1,2 - min.:1.1 mm
r3,4 - min.:0.6 mm
a:41.4 mm
da - min.:106 mm
db - min.:106 mm
Da - max.:134 mm
Db - max.:136.8 mm
ra - max.:1 mm
rb - max.:0.6 mm
dn:116.1 mm
Basic dynamic load rating - C:20.8 kN
Basic static load rating - C0:21.2 kN
Fatigue load limit - Pu:0.815 kN
Limiting speed for grease lubrication:13000 r/min
Limiting speed for oil lubrication:20000 mm/min
Ball - Dw:7.938 mm
Ball - z:37
Gref:9.96 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:125 N
Preload class B - GB:250 N
Preload class C - GC:750 N
Calculation factor - f:1.11
Calculation factor - f1:0.99
Calculation factor - f2A:1
Calculation factor - f2B:1.02
Calculation factor - f2C:1.08
Calculation factor - fHC:1.01
Preload class A:178 N/micron
Preload class B:226 N/micron
Preload class C:343 N/micron
r1,2 min.:1.1 mm
r3,4 min.:0.6 mm
da min.:106 mm
db min.:106 mm
Da max.:134 mm
Db max.:136.8 mm
ra max.:1 mm
rb max.:0.6 mm
Basic dynamic load rating C:27.6 kN
Basic static load rating C0:33.5 kN
Fatigue load limit Pu:0.815 kN
Attainable speed for grease lubrication:13000 r/min
Attainable speed for oil-air lubrication:20000 r/min
Ball diameter Dw:7.938 mm
Number of balls z:37
Reference grease quantity Gref:9.96 cm³
Preload class A GA:125 N
Static axial stiffness, preload class A:178 N/µm
Preload class B GB:250 N
Static axial stiffness, preload class B:226 N/µm
Preload class C GC:750 N
Static axial stiffness, preload class C:343 N/µm
Calculation factor f:1.11
Calculation factor f1:0.99
Calculation factor f2A:1
Calculation factor f2B:1.02
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:0.8 kg

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