NSK 25580/25521
Inch Series Tapered Roller Bearings
(BRAND)：NSK
(Availability)：In Stock
Designations
25580/25521
Boundary Dimensions
d
44.45
mm
Bore diameter
D
83.058
mm
Outside diameter
T
23.812
mm
Total width
B
25.4
mm
Width of inner ring
C
19.05
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
94000
N
Basic dynamic load rating
C0r
99000
N
Basic static load rating
Speeds
Grease
4500
min-1
Grease lubrication
Oil (Oil-bath)
6000
min-1
Oil-bath lubrication
a
17.6
mm
Effective load center
Dimensions
da
56
mm
Diameter of shaft abutment
Da
72
mm
Diameter of housing abutment
db
51
mm
Diameter of shaft abutment
Db
78
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
