NSK 67780/67720
Inch Series Tapered Roller Bearings
(BRAND)：NSK
(Availability)：In Stock
(EMAIL)：info@noksbearings.com
Designations
67780/67720
Boundary Dimensions
d
165.1
mm
Bore diameter
D
247.65
mm
Outside diameter
T
47.625
mm
Total width
B
47.625
mm
Width of inner ring
C
38.1
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
400000
N
Basic dynamic load rating
C0r
645000
N
Basic static load rating
Speeds
Grease
1300
min-1
Grease lubrication
Oil (Oil-bath)
1700
min-1
Oil-bath lubrication
a
52.4
mm
Effective load center
Dimensions
da
185
mm
Diameter of shaft abutment
Da
229
mm
Diameter of housing abutment
db
179
mm
Diameter of shaft abutment
Db
240
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
