NSK R4B
Extra Small Ball Bearings and Miniature Ball Bearings Inch Series
(BRAND)：NSK
(Availability)：In Stock
(EMAIL)：info@noksbearings.com
Designations
R4B
Boundary Dimensions
d
6.35
mm
Bore diameter
D
15.875
mm
Outside diameter
B
4.978
mm
Width
r (min.)
0.3
mm
Chamfer dimension
Basic Load Ratings
Cr
1770
N
Basic dynamic load rating
C0r
660
N
Basic static load rating
Speeds
Grease
38000
min-1
Grease lubrication
Oil (Oil-bath)
45000
min-1
Oil-bath lubrication
da (min.)
8.4
mm
Diameter of shaft abutment
Da (max.)
13.8
mm
Diameter of housing abutment
ra (max.)
0.3
mm
Radius of shaft or housing fillet
Abutment and Fillet Dimensions
z
8
Number of Balls
Dw
2.5
mm
Ball Diameter
