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638/8-2Z/Deep groove ball bearing/

Product model 638/8-2Z
d 8 mm
D 16 mm
B 6 mm
Limiting speed 45000 r/min
Reference speed 90000r/min r/min
d2 9.65mm
D2 14.2mm
Chamfer Dimension(r1,2) 0.2mm
Shaft shoulder diameter(da)min 9.4mm
Shaft shoulder diameter(da)max 9.5mm
Diameter of bearing seat shoulder(Da) 14.6mm
Chamfer radius of shaft or bearing seat(ra) 0.2mm
Fatigue load limit 0.012kN
Minimum load factor(kr) 0.015
Calculation coefficient(f0) 7.5
Mass bearing 0.0043kg