NSK NNU4921
Double-Row Cylindrical Roller Bearings
(BRAND)：NSK
(Availability)：In Stock
(EMAIL)：info@noksbearings.com
Designations
NNU4921
Boundary Dimensions
d
105
mm
Bore diameter
D
145
mm
Outside diameter
B
40
mm
Width
FW
117
mm
Raceway diameter of inner ring
r (min.)
1.1
mm
Chamfer dimension
Basic Load Ratings
Cr
198000
N
Basic dynamic load rating
C0r
315000
N
Basic static load rating
Speeds
Grease
3800
min-1
Grease lubrication
Oil (Oil-bath)
4800
min-1
Oil-bath lubrication
da (min.)
111.5
mm
Diameter of shaft abutment
da (max.)
116
mm
Diameter of shaft abutment
dc (min.)
120
mm
Diameter of shaft abutment
d1a (min.)
113
mm
Diameter of spacer sleeve abutment
Da (max.)
138.5
mm
Diameter of housing abutment
rb (max.)
1
mm
Radius of shaft or housing fillet
Abutment and Fillet Dimensions
Mass approx.
1.99
kg
Mass approx.
