NSK NN4948MB
Double-Row Cylindrical Roller Bearings
(BRAND)：NSK
(Availability)：In Stock
Designations
NN4948MB
Boundary Dimensions
NN: Inner ring rib type
Bearing Type
d
240
mm
Bore diameter
D
320
mm
Outside diameter
B
80
mm
Width
r(min.)
2.1
mm
Chamfer Dimension
Basic Load Ratings
Cr
720
kN
Basic Dynamic Load Rating
C0r
1450
kN
Basic Static Load Rating
Speeds
Grease
2400
min-1
Limiting Speed
Oil (Oil-air)
2900
min-1
Limiting Speed
Dimensions
Ew
300
mm
Roller Circumscribed Circle Diameters
s
1.8
mm
Axial Displacement
Abutment and Fillet Dimensions
da(min.)
251
mm
Diameter of Shaft Abutment
d1a(min.)
254
mm
Diameter of Shaft Abutment
Da(min.)
302
mm
Diameter of Housing Abutment
Da(max.)
309
mm
Diameter of Housing Abutment
ra(max.)
2
mm
Radius of Shaft or Housing Fillet
