NSK NNU4976KR
Double-Row Cylindrical Roller Bearings
(BRAND)：NSK
(Availability)：In Stock
Designations
NNU4976KR
Boundary Dimensions
NNU: Outer ring rib type
Bearing Type
d
380
mm
Bore diameter
D
520
mm
Outside diameter
B
140
mm
Width
r(min.)
4
mm
Chamfer Dimension
Basic Load Ratings
Cr
1880
kN
Basic Dynamic Load Rating
C0r
4600
kN
Basic Static Load Rating
Speeds
Grease
1500
min-1
Limiting Speed
Oil (Oil-air)
1800
min-1
Limiting Speed
Dimensions
Ew
421
mm
Roller Circumscribed Circle Diameters
s
3.8
mm
Axial Displacement
Abutment and Fillet Dimensions
da(min.)
396
mm
Diameter of Shaft Abutment
d1a(min.)
408
mm
Diameter of Shaft Abutment
Da(max.)
504
mm
Diameter of Housing Abutment
ra(max.)
3
mm
Radius of Shaft or Housing Fillet
