NSK HR303/28C
Metric Series Tapered Roller Bearings
(BRAND)：NSK
(Availability)：In Stock
(EMAIL)：info@noksbearings.com
Designations
HR303/28C
Boundary Dimensions
d
28
mm
Bore diameter
D
68
mm
Outside diameter
T
19.75
mm
Total width
B
18
mm
Width of inner ring
C
14
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
60500
N
Basic dynamic load rating
C0r
50500
N
Basic static load rating
Speeds
Grease
5600
min-1
Grease lubrication
Oil (Oil-bath)
7500
min-1
Oil-bath lubrication
a
17.4
mm
Effective load center
Dimensions
da (min.)
39
mm
Diameter of shaft abutment
Db (min.)
63
mm
Diameter of housing abutment
Da (min.)
57
mm
Diameter of housing abutment
Da (max.)
59
mm
Diameter of housing abutment
Sa
3
mm
Minimum width of space required in housing on large side face
Sb
5.5
mm
Minimum width of space required in housing on small side face
db (max.)
38
mm
Diameter of shaft 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
