outline dimension (mm)

d	4.762
D	9.525
D1	10.719
B	3.175
B1	3.175
C1	0.58
C2	0.79
γ（min）?	0.1

specified load (N)

Cr	710
Cor	270

Rated load load {kgf}

Cr	73
Cor	28

Rated speed min ^-1

Fat lubrication open type Z·ZZ	50000
Oil lubrication open type Z	60000

bearing symbol

open type	FR166
Dust cover type	FR166 ZZ

installation size (mm)

da（min）	5.6
db(max)	5.9
γa（max）	0.1

Weight (g) (reference)

open type	0.9
Dust cover type	0.98