NSK N308M
Single-Row Cylindrical Roller Bearings
(BRAND)：NSK
(Availability)：In Stock
Designations
N308M
Boundary Dimensions
d
40
mm
Bore diameter
D
90
mm
Outside diameter
B
23
mm
Width
EW
77.5
mm
Raceway diameter of outer ring
r (min.)
1.5
mm
Chamfer dimension
r1 (min.)
1.5
mm
Chamfer dimension
Basic Load Ratings
Cr
72000
N
Basic dynamic load rating
C0r
57000
N
Basic static load rating
Speeds
Thermal Speed Rating (Oil-bath)
8500
min-1
Oil-bath lubrication subject to conditions outlined in ISO 15312
Grease
6700
min-1
Grease lubrication
Oil (Oil-bath)
8500
min-1
Oil-bath lubrication
da (min.)
48
mm
Diameter of shaft abutment
Db (min.)
80
mm
Diameter of housing abutment
Db (max.)
82
mm
Diameter of housing abutment
ra (max.)
1.5
mm
Radius of shaft or housing fillet
rb (max.)
1.5
mm
Radius of shaft or housing fillet
Abutment and Fillet Dimensions
Mass approx.
0.732
kg
Mass approx.
