NSK NN4938MBKR
Double-Row Cylindrical Roller Bearings
(BRAND)：NSK
(Availability)：In Stock
Designations
NN4938MBKR
Boundary Dimensions
NN: Inner ring rib type
Bearing Type
d
190
mm
Bore diameter
D
260
mm
Outside diameter
B
69
mm
Width
r(min.)
2
mm
Chamfer Dimension
Basic Load Ratings
Cr
555
kN
Basic Dynamic Load Rating
C0r
1060
kN
Basic Static Load Rating
Speeds
Grease
3400
min-1
Limiting Speed
Oil (Oil-air)
4000
min-1
Limiting Speed
Dimensions
Ew
243.5
mm
Roller Circumscribed Circle Diameters
s
1.3
mm
Axial Displacement
Abutment and Fillet Dimensions
da(min.)
199
mm
Diameter of Shaft Abutment
d1a(min.)
203
mm
Diameter of Shaft Abutment
Da(min.)
246
mm
Diameter of Housing Abutment
Da(max.)
251
mm
Diameter of Housing Abutment
ra(max.)
2
mm
Radius of Shaft or Housing Fillet
