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638/5-2Z/Deep groove ball bearing/

Product model 638/5-2Z
d 5 mm
D 11 mm
B 5 mm
Limiting speed 60000 r/min
Reference speed 120000r/min r/min
d2 6.2mm
D2 9.9mm
Chamfer Dimension(r1,2) 0.15mm
Shaft shoulder diameter(da)min 5.8mm
Shaft shoulder diameter(da)max 6mm
Diameter of bearing seat shoulder(Da) 10.2mm
Chamfer radius of shaft or bearing seat(ra) 0.1mm
Fatigue load limit 0.006kN
Minimum load factor(kr) 0.015
Calculation coefficient(f0) 7.1
Mass bearing 0.0018kg