NSK 687
Extra Small Ball Bearings and Miniature Ball Bearings Metric Series
(BRAND)：NSK
(Availability)：In Stock
(EMAIL)：info@noksbearings.com
Designations
687
Boundary Dimensions
d
7
mm
Bore diameter
D
14
mm
Outside diameter
B
3.5
mm
Width
r (min.)
0.15
mm
Chamfer dimension
Basic Load Ratings
Cr
1290
N
Basic dynamic load rating
C0r
510
N
Basic static load rating
Speeds
Grease
40000
min-1
Grease lubrication
Oil (Oil-bath)
45000
min-1
Oil-bath lubrication
da (min.)
8.2
mm
Diameter of shaft abutment
Da (max.)
12.8
mm
Diameter of housing abutment
ra (max.)
0.15
mm
Radius of shaft or housing fillet
Abutment and Fillet Dimensions
z
9
Number of Balls
Dw
2
mm
Ball Diameter
