NSK 78250/78551
Inch Series Tapered Roller Bearings
(BRAND)：NSK
(Availability)：In Stock
Designations
78250/78551
Boundary Dimensions
d
63.5
mm
Bore diameter
D
140.03
mm
Outside diameter
T
36.512
mm
Total width
B
33.236
mm
Width of inner ring
C
23.52
mm
Width of outer ring
Cup r (min.)
2.3
mm
Chamfer dimension of outer ring (Cup)
Cone r (min.)
2.3
mm
Chamfer dimension of inner ring (Cone)
Basic Load Ratings
Cr
187000
N
Basic dynamic load rating
C0r
183000
N
Basic static load rating
Speeds
Grease
2600
min-1
Grease lubrication
Oil (Oil-bath)
3600
min-1
Oil-bath lubrication
a
44.2
mm
Effective load center
Dimensions
da
85
mm
Diameter of shaft abutment
Da
117
mm
Diameter of housing abutment
db
79
mm
Diameter of shaft abutment
Db
132
mm
Diameter of housing abutment
ra (max.)
2.3
mm
Radius of shaft or housing fillet of inner ring
ra (max.)
2.3
mm
Radius of shaft or housing fillet of outer ring
