NSK 30256
Metric Series Tapered Roller Bearings
(BRAND)：NSK
(Availability)：In Stock
(EMAIL)：info@noksbearings.com
Designations
30256
Boundary Dimensions
d
280
mm
Bore diameter
D
500
mm
Outside diameter
T
89
mm
Total width
B
80
mm
Width of inner ring
C
67
mm
Width of outer ring
Cup r (min.)
5
mm
Chamfer dimension of outer ring (Cup)
Cone r (min.)
6
mm
Chamfer dimension of inner ring (Cone)
Basic Load Ratings
Cr
1530000
N
Basic dynamic load rating
C0r
1900000
N
Basic static load rating
Speeds
Grease
630
min-1
Grease lubrication
Oil (Oil-bath)
850
min-1
Oil-bath lubrication
a
98.5
mm
Effective load center
Dimensions
da (min.)
313
mm
Diameter of shaft abutment
Db (min.)
462
mm
Diameter of housing abutment
Da (min.)
436
mm
Diameter of housing abutment
Da (max.)
478
mm
Diameter of housing abutment
Sa
12
mm
Minimum width of space required in housing on large side face
Sb
22
mm
Minimum width of space required in housing on small side face
db (max.)
339
mm
Diameter of shaft abutment
ra (max.)
5
mm
Radius of shaft or housing fillet of inner ring
ra (max.)
4
mm
Radius of shaft or housing fillet of outer ring
