NSK 12168/12303
Inch Series Tapered Roller Bearings
(BRAND)：NSK
(Availability)：In Stock
Designations
12168/12303
Boundary Dimensions
d
42.862
mm
Bore diameter
D
76.992
mm
Outside diameter
T
17.462
mm
Total width
B
17.145
mm
Width of inner ring
C
11.908
mm
Width of outer ring
Cup r (min.)
1.5
mm
Chamfer dimension of outer ring (Cup)
Cone r (min.)
1.5
mm
Chamfer dimension of inner ring (Cone)
Basic Load Ratings
Cr
54000
N
Basic dynamic load rating
C0r
54000
N
Basic static load rating
Speeds
Grease
4500
min-1
Grease lubrication
Oil (Oil-bath)
6000
min-1
Oil-bath lubrication
a
17.7
mm
Effective load center
Dimensions
da
51
mm
Diameter of shaft abutment
Da
68
mm
Diameter of housing abutment
db
48.5
mm
Diameter of shaft abutment
Db
73
mm
Diameter of housing abutment
ra (max.)
1.5
mm
Radius of shaft or housing fillet of inner ring
ra (max.)
1.5
mm
Radius of shaft or housing fillet of outer ring
