NSK NN4944MB
Double-Row Cylindrical Roller Bearings
(BRAND)：NSK
(Availability)：In Stock
Designations
NN4944MB
Boundary Dimensions
NN: Inner ring rib type
Bearing Type
d
220
mm
Bore diameter
D
300
mm
Outside diameter
B
80
mm
Width
r(min.)
2.1
mm
Chamfer Dimension
Basic Load Ratings
Cr
690
kN
Basic Dynamic Load Rating
C0r
1330
kN
Basic Static Load Rating
Speeds
Grease
2500
min-1
Limiting Speed
Oil (Oil-air)
3100
min-1
Limiting Speed
Dimensions
Ew
279
mm
Roller Circumscribed Circle Diameters
s
3.3
mm
Axial Displacement
Abutment and Fillet Dimensions
da(min.)
231
mm
Diameter of Shaft Abutment
d1a(min.)
234
mm
Diameter of Shaft Abutment
Da(min.)
281
mm
Diameter of Housing Abutment
Da(max.)
289
mm
Diameter of Housing Abutment
ra(max.)
2
mm
Radius of Shaft or Housing Fillet
