NSK 557S/552A
Inch Series Tapered Roller Bearings
(BRAND)：NSK
(Availability)：In Stock
Designations
557S/552A
Boundary Dimensions
d
53.975
mm
Bore diameter
D
123.825
mm
Outside diameter
T
38.1
mm
Total width
B
36.678
mm
Width of inner ring
C
30.162
mm
Width of outer ring
Cup r (min.)
3.3
mm
Chamfer dimension of outer ring (Cup)
Cone r (min.)
3.5
mm
Chamfer dimension of inner ring (Cone)
Basic Load Ratings
Cr
198000
N
Basic dynamic load rating
C0r
221000
N
Basic static load rating
Speeds
Grease
3000
min-1
Grease lubrication
Oil (Oil-bath)
4000
min-1
Oil-bath lubrication
a
28.8
mm
Effective load center
Dimensions
da
71
mm
Diameter of shaft abutment
Da
109
mm
Diameter of housing abutment
db
65
mm
Diameter of shaft abutment
Db
116
mm
Diameter of housing abutment
ra (max.)
3.5
mm
Radius of shaft or housing fillet of inner ring
ra (max.)
3.3
mm
Radius of shaft or housing fillet of outer ring
