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D/W R144 R-2Z/Deep groove ball bearing/

r2z1

Product model D/W R144 R-2Z
d 3.175 mm
D 6.35 mm
B 2.779 mm
Limiting speed 85000 r/min
d1 ≈3.93 mm
D1 ≈5.9 mm
D2 ≈4.2 mm
D3 7.518 mm
C 0.787 mm
Chamfer size (r1,2) min.0.1 mm
da1 min.3.8 mm/max.3.8 mm
ra max.0.1 mm
pu 0.002 kN
Reference speed 170 000 r/min
kr 0.02
f0 7
Radial runout National Standard
Dimensional tolerance National Standard