7220CTRDUMP3 NSK Super Precision Bearings - NACHI BEARINGS OF AMERICA CORP.

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Static axial stiffness, preload class D:221 N/µm
Number of balls z:21
Basic dynamic load rating C:11.7 kN
D2:57.12 mm
Fatigue load limit Pu:0.34 kN
Preload class B GB:140 N
Preload class C GC:280 N
r3,4 min.:0.3 mm
Calculation factor f2A:1
d1:47.1 mm
rb max.:0.3 mm
D:62 mm
Calculation factor (back-to-back, face-to-face) Y1:0.92
Calculation factor (back-to-back, face-to-face) Y2:1.41
Static axial stiffness, preload class A:98 N/µm
Calculation factor fHC:1.04
Da max.:58.8 mm
Basic static load rating C0:8 kN
Ball diameter Dw:6.35 mm
Static axial stiffness, preload class B:127 N/µm

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