NSK NN4976KR
Double-Row Cylindrical Roller Bearings
(BRAND)：NSK
(Availability)：In Stock
Designations
NN4976KR
Boundary Dimensions
NN: Inner 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
485
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(min.)
488
mm
Diameter of Housing Abutment
Da(max.)
504
mm
Diameter of Housing Abutment
ra(max.)
3
mm
Radius of Shaft or Housing Fillet
