NTN 28921 Tapered Roller Bearings - Bearing Distributors Inc

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NTN 28921 Tapered Roller Bearings Product Features

d:100 mm
D:150 mm
B:24 mm
d1:115.4 mm
d2:115.4 mm
D1:134.6 mm
r1,2 min.:1.5 mm
r3,4 min.:1 mm
a:41.3 mm
da min.:107 mm
db min.:107 mm
Da max.:143 mm
Db max.:146 mm
ra max.:1.5 mm
rb max.:1 mm
Basic dynamic load rating C:79.3 kN
Basic static load rating C0:80 kN
Fatigue load limit Pu:3.05 kN
Attainable speed for grease lubrication:8000 r/min
Ball diameter Dw:15.875 mm
Number of balls z:22
Reference grease quantity Gref:16.2 cm³
Preload class A GA:500 N
Static axial stiffness, preload class A:270 N/µm
Preload class B GB:1000 N
Static axial stiffness, preload class B:355 N/µm
Preload class C GC:2000 N
Static axial stiffness, preload class C:472 N/µm
Preload class D GD:4000 N
Static axial stiffness, preload class D:640 N/µm
Calculation factor f:1.16
Calculation factor f1:0.99
Calculation factor f2A:1
Calculation factor f2B:1.02
Calculation factor f2C:1.05
Calculation factor f2D:1.08
Calculation factor fHC:1
Calculation factor e:0.68
Calculation factor (single, tandem) Y2:0.87
Calculation factor (back-to-back, face-to-face) Y1:0.92
Calculation factor (back-to-back, face-to-face) Y2:1.41
Mass bearing:1.26 kg

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