NSK NNU4948MBKR
Double-Row Cylindrical Roller Bearings
(BRAND)：NSK
(Availability)：In Stock
Designations
NNU4948MBKR
Boundary Dimensions
NNU: Outer 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
263
mm
Roller Circumscribed Circle Diameters
s
3.3
mm
Axial Displacement
Abutment and Fillet Dimensions
da(min.)
251
mm
Diameter of Shaft Abutment
d1a(min.)
254
mm
Diameter of Shaft Abutment
Da(max.)
309
mm
Diameter of Housing Abutment
ra(max.)
2
mm
Radius of Shaft or Housing Fillet
