NSK 3877/3820
Inch Series Tapered Roller Bearings
(BRAND)：NSK
(Availability)：In Stock
Designations
3877/3820
Boundary Dimensions
d
41.275
mm
Bore diameter
D
85.725
mm
Outside diameter
T
30.162
mm
Total width
B
30.162
mm
Width of inner ring
C
23.812
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
112000
N
Basic dynamic load rating
C0r
115000
N
Basic static load rating
Speeds
Grease
4300
min-1
Grease lubrication
Oil (Oil-bath)
6000
min-1
Oil-bath lubrication
a
21.8
mm
Effective load center
Dimensions
da
57
mm
Diameter of shaft abutment
Da
73
mm
Diameter of housing abutment
db
50
mm
Diameter of shaft abutment
Db
81
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
