NSK 18790/18720
Inch Series Tapered Roller Bearings
(BRAND)：NSK
(Availability)：In Stock
Designations
18790/18720
Boundary Dimensions
d
50.8
mm
Bore diameter
D
85
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.)
3.5
mm
Chamfer dimension of inner ring (Cone)
Basic Load Ratings
Cr
59500
N
Basic dynamic load rating
C0r
63000
N
Basic static load rating
Speeds
Grease
4300
min-1
Grease lubrication
Oil (Oil-bath)
5600
min-1
Oil-bath lubrication
a
16.7
mm
Effective load center
Dimensions
da
62
mm
Diameter of shaft abutment
Da
77
mm
Diameter of housing abutment
db
56
mm
Diameter of shaft abutment
Db
80
mm
Diameter of housing abutment
ra (max.)
3.5
mm
Radius of shaft or housing fillet of inner ring
ra (max.)
1.5
mm
Radius of shaft or housing fillet of outer ring
