NSK NNU4948
Double-Row Cylindrical Roller Bearings
(BRAND)：NSK
(Availability)：In Stock
(EMAIL)：info@noksbearings.com
Designations
NNU4948
Boundary Dimensions
d
240
mm
Bore diameter
D
320
mm
Outside diameter
B
80
mm
Width
FW
263
mm
Raceway diameter of inner ring
r (min.)
2.1
mm
Chamfer dimension
Basic Load Ratings
Cr
770000
N
Basic dynamic load rating
C0r
1450000
N
Basic static load rating
Speeds
Grease
1600
min-1
Grease lubrication
Oil (Oil-bath)
2000
min-1
Oil-bath lubrication
da (min.)
251
mm
Diameter of shaft abutment
da (max.)
262
mm
Diameter of shaft abutment
dc (min.)
269
mm
Diameter of shaft abutment
d1a (min.)
254
mm
Diameter of spacer sleeve abutment
Da (max.)
309
mm
Diameter of housing abutment
rb (max.)
2
mm
Radius of shaft or housing fillet
Abutment and Fillet Dimensions
Mass approx.
18
kg
Mass approx.
