SKF NNU 4921 B/SPW33
Super-precision double row cylindrical roller bearing with lubrication feature
(BRAND)：SKF
(Availability)：In Stock
(EMAIL)：info@noksbearings.com
Dimensions
d
105.0 mm
Bore diameter
D
145.0 mm
Outside diameter
B
40.0 mm
Width
D1
130.8 mm
Shoulder diameter outer ring (NNU design)
F
118.0 mm
Raceway diameter inner ring (NNU design)
b
5.5 mm
Width annular lubrication groove at outer ring
K
3.0 mm
Diameter lubrication hole (outer ring)
r1,2
1.1 mm
Chamfer dimension outer ring
r3,4
1.1 mm
Chamfer dimension inner ring (bearing with tapered bore)
s
1.1 mm
Permissible axial displacement from the normal position of one bearing ring relative to the other (all)
mass
1.99 kg
Product net weight
Abutment dimensions
da
111.0 mm
Abutment diameter shaft
da
116.0 mm
Abutment diameter shaft (NNU design)
db
121.0 mm
Abutment diameter shaft (NNU design; not for tapered bore)
Da
138.5 mm
Abutment diameter housing
ra
1.0 mm
Fillet radius
dn
119.0 mm
Oil nozzle position (not for variants with TNHA cage)
