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618/4/Deep groove ball bearing/

D1

Product model 618/4
d 4 mm
D 9 mm
B 2.5 mm
Limiting speed 85000 r/min
d1 ≈5.2 mm
凹槽直径(D1) ≈7.5 mm
Chamfer size (r1,2) min.0.1 mm
da min.4.6 mm
Da max.8.4 mm
ra max.0.1 mm
Pu 0.005 kN
Reference speed 140 000 r/min
kr 0.015
f0 6.5
Radial runout National Standard
Dimensional tolerance National Standard