NSK NF228M
Single-Row Cylindrical Roller Bearings
(BRAND)：NSK
(Availability)：In Stock
Designations
NF228M
Boundary Dimensions
d
140
mm
Bore diameter
D
250
mm
Outside diameter
B
42
mm
Width
EW
221
mm
Raceway diameter of outer ring
r (min.)
3
mm
Chamfer dimension
r1 (min.)
3
mm
Chamfer dimension
Basic Load Ratings
Cr
400000
N
Basic dynamic load rating
C0r
420000
N
Basic static load rating
Speeds
Thermal Speed Rating (Oil-bath)
3400
min-1
Oil-bath lubrication subject to conditions outlined in ISO 15312
Grease
2400
min-1
Grease lubrication
Oil (Oil-bath)
3000
min-1
Oil-bath lubrication
da (min.)
153
mm
Diameter of shaft abutment
Db (min.)
226
mm
Diameter of housing abutment
Da (max.)
237
mm
Diameter of housing abutment
Db (max.)
237
mm
Diameter of housing abutment
ra (max.)
2.5
mm
Radius of shaft or housing fillet
rb (max.)
2.5
mm
Radius of shaft or housing fillet
Abutment and Fillet Dimensions
Mass approx.
9.24
kg
Mass approx.
