NSK 3984/3920
Inch Series Tapered Roller Bearings
(BRAND)：NSK
(Availability)：In Stock
Designations
3984/3920
Boundary Dimensions
d
66.675
mm
Bore diameter
D
112.712
mm
Outside diameter
T
30.162
mm
Total width
B
30.048
mm
Width of inner ring
C
23.812
mm
Width of outer ring
Cup r (min.)
3.2
mm
Chamfer dimension of outer ring (Cup)
Cone r (min.)
3.5
mm
Chamfer dimension of inner ring (Cone)
Basic Load Ratings
Cr
128000
N
Basic dynamic load rating
C0r
149000
N
Basic static load rating
Speeds
Grease
3200
min-1
Grease lubrication
Oil (Oil-bath)
4300
min-1
Oil-bath lubrication
a
25.5
mm
Effective load center
Dimensions
da
80
mm
Diameter of shaft abutment
Da
99
mm
Diameter of housing abutment
db
74
mm
Diameter of shaft abutment
Db
106
mm
Diameter of housing abutment
ra (max.)
3.5
mm
Radius of shaft or housing fillet of inner ring
ra (max.)
3.2
mm
Radius of shaft or housing fillet of outer ring
