NSK 1680/1620
Inch Series Tapered Roller Bearings
(BRAND)：NSK
(Availability)：In Stock
Designations
1680/1620
Boundary Dimensions
d
33.338
mm
Bore diameter
D
66.675
mm
Outside diameter
T
20.638
mm
Total width
B
20.638
mm
Width of inner ring
C
15.875
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
56500
N
Basic dynamic load rating
C0r
53500
N
Basic static load rating
Speeds
Grease
5600
min-1
Grease lubrication
Oil (Oil-bath)
7500
min-1
Oil-bath lubrication
a
15.2
mm
Effective load center
Dimensions
da
44.5
mm
Diameter of shaft abutment
Da
58
mm
Diameter of housing abutment
db
38.5
mm
Diameter of shaft abutment
Db
61
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
