SKF NNU4956BK/SPW33 Cylindrical roller bearings,SKF NNU 4956 BK/SPW33 Super-precision bearings-BEARINGPOWER Co.,Ltd.
Bearings, units and housings -- Super-precision bearings -- Cylindrical roller bearings -- Cylindrical roller bearings, double row, super-precision -- SKF NNU 4956 BK/SPW33

NNU 4956 BK/SPW33

Dimensions
d 280mm
D 380mm
B 100mm
D1 345.6mm
F 312mm
b 13.9mm
K 3mm
r1,2min.2.1mm
r3,4min.1.1mm
smax.4.5mm

Tapered bore, taper 1:12

Abutment dimensions
damin.291mm
damax.308mm
Damax.369mm
dn 313.5mm
Calculation data
Basic dynamic load ratingC 765kN
Basic static load ratingC0 1800kN
Fatigue load limitPu 170kN
Attainable speed for grease lubrication  1900r/min
Attainable speed for oil-air lubrication  2200r/min
Reference grease quantityGref 384cm³
Static radial stiffness (guideline value)  7260N/µm
Mass
Mass bearing  32.5kg
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