SKF NNU4938BK/SPW33 Cylindrical roller bearings,SKF NNU 4938 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 4938 BK/SPW33

NNU 4938 BK/SPW33

Dimensions
d 190mm
D 260mm
B 69mm
D1 236mm
F 212mm
b 8.3mm
K 3mm
r1,2min.2mm
r3,4min.1mm
smax.1.1mm

Tapered bore, taper 1:12

Abutment dimensions
damin.200mm
damax.209mm
Damax.250mm
dn 213mm
Calculation data
Basic dynamic load ratingC 402kN
Basic static load ratingC0 880kN
Fatigue load limitPu 90kN
Attainable speed for grease lubrication  2800r/min
Attainable speed for oil-air lubrication  3200r/min
Reference grease quantityGref 85cm³
Static radial stiffness (guideline value)  5380N/µm
Mass
Mass bearing  11kg
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