NSK NJ2228EM
Single-Row Cylindrical Roller Bearings
(BRAND)：NSK
(Availability)：In Stock
Designations
NJ2228EM
Boundary Dimensions
d
140
mm
Bore diameter
D
250
mm
Outside diameter
B
68
mm
Width
FW
169
mm
Raceway diameter of inner ring
r (min.)
3
mm
Chamfer dimension
r1 (min.)
3
mm
Chamfer dimension
Basic Load Ratings
Cr
675000
N
Basic dynamic load rating
C0r
790000
N
Basic static load rating
Speeds
Thermal Speed Rating (Oil-bath)
3200
min-1
Oil-bath lubrication subject to conditions outlined in ISO 15312
Mechanical (forced-circulation oil)
4000
min-1
Properly designed and controlled forced-circulation oil lubrication
Grease
2200
min-1
Grease lubrication
Oil (Oil-bath)
2800
min-1
Oil-bath lubrication
db (min.)
153
mm
Diameter of shaft / spacer sleeve abutment
db (max.)
165
mm
Diameter of shaft / spacer sleeve abutment
dd (min.)
182
mm
Diameter of shaft abutment
Da (max.)
237
mm
Diameter of housing abutment
ra (max.)
2.5
mm
Radius of shaft or housing fillet
Abutment and Fillet Dimensions
Mass approx.
15.3
kg
Mass approx.
