NSK 12580/12520
Inch Series Tapered Roller Bearings
(BRAND)：NSK
(Availability)：In Stock
(EMAIL)：info@noksbearings.com
Designations
12580/12520
Boundary Dimensions
d
20.638
mm
Bore diameter
D
49.225
mm
Outside diameter
T
19.845
mm
Total width
B
19.845
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.)
1.5
mm
Chamfer dimension of inner ring (Cone)
Basic Load Ratings
Cr
44000
N
Basic dynamic load rating
C0r
37000
N
Basic static load rating
Speeds
Grease
8000
min-1
Grease lubrication
Oil (Oil-bath)
11000
min-1
Oil-bath lubrication
a
12.9
mm
Effective load center
Dimensions
da
28.5
mm
Diameter of shaft abutment
Da
42.5
mm
Diameter of housing abutment
db
26
mm
Diameter of shaft abutment
Db
45.5
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
