NSK 645/633
Inch Series Tapered Roller Bearings
(BRAND)：NSK
(Availability)：In Stock
Designations
645/633
Boundary Dimensions
d
71.438
mm
Bore diameter
D
130.175
mm
Outside diameter
T
41.275
mm
Total width
B
41.275
mm
Width of inner ring
C
31.75
mm
Width of outer ring
Cup r (min.)
3.3
mm
Chamfer dimension of outer ring (Cup)
Cone r (min.)
6.4
mm
Chamfer dimension of inner ring (Cone)
Basic Load Ratings
Cr
239000
N
Basic dynamic load rating
C0r
263000
N
Basic static load rating
Speeds
Grease
2800
min-1
Grease lubrication
Oil (Oil-bath)
3800
min-1
Oil-bath lubrication
a
29.9
mm
Effective load center
Dimensions
da
93
mm
Diameter of shaft abutment
Da
116
mm
Diameter of housing abutment
db
81
mm
Diameter of shaft abutment
Db
124
mm
Diameter of housing abutment
ra (max.)
6.4
mm
Radius of shaft or housing fillet of inner ring
ra (max.)
3.3
mm
Radius of shaft or housing fillet of outer ring
