NSK NN4921MB
Double-Row Cylindrical Roller Bearings
(BRAND)：NSK
(Availability)：In Stock
Designations
NN4921MB
Boundary Dimensions
NN: Inner ring rib type
Bearing Type
d
105
mm
Bore diameter
D
145
mm
Outside diameter
B
40
mm
Width
r(min.)
1.1
mm
Chamfer Dimension
Basic Load Ratings
Cr
185
kN
Basic Dynamic Load Rating
C0r
315
kN
Basic Static Load Rating
Speeds
Grease
6000
min-1
Limiting Speed
Oil (Oil-air)
7200
min-1
Limiting Speed
Dimensions
Ew
135
mm
Roller Circumscribed Circle Diameters
s
1.2
mm
Axial Displacement
Abutment and Fillet Dimensions
da(min.)
111.5
mm
Diameter of Shaft Abutment
d1a(min.)
113
mm
Diameter of Shaft Abutment
Da(min.)
137
mm
Diameter of Housing Abutment
Da(max.)
138.5
mm
Diameter of Housing Abutment
ra(max.)
1
mm
Radius of Shaft or Housing Fillet
