NSK 18690/18620
Inch Series Tapered Roller Bearings
(BRAND)：NSK
(Availability)：In Stock
Designations
18690/18620
Boundary Dimensions
d
46.038
mm
Bore diameter
D
79.375
mm
Outside diameter
T
17.462
mm
Total width
B
17.462
mm
Width of inner ring
C
13.495
mm
Width of outer ring
Cup r (min.)
1.5
mm
Chamfer dimension of outer ring (Cup)
Cone r (min.)
2.8
mm
Chamfer dimension of inner ring (Cone)
Basic Load Ratings
Cr
56500
N
Basic dynamic load rating
C0r
57000
N
Basic static load rating
Speeds
Grease
4500
min-1
Grease lubrication
Oil (Oil-bath)
6000
min-1
Oil-bath lubrication
a
15.5
mm
Effective load center
Dimensions
da
56
mm
Diameter of shaft abutment
Da
71
mm
Diameter of housing abutment
db
51
mm
Diameter of shaft abutment
Db
74
mm
Diameter of housing abutment
ra (max.)
2.8
mm
Radius of shaft or housing fillet of inner ring
ra (max.)
1.5
mm
Radius of shaft or housing fillet of outer ring
