SKF 23984CCK/W33 bearing
The major players, INA/FAG, SKF and Timken all manufacture in China and have top notch quality control, so those bearings should be the same quality as those made here and in Europe. Timken is the only major I know of that imports Chinese bearings, so if you see an SKF or FAG with Chinese markings on it, be suspect.
Spherical roller bearings 23984CCK/W33
Bearing number : 23984CCK/W33
Size (mm) : 420x560x106
Brand : SKF
Bore Diameter (mm) : 420
Outer Diameter (mm) : 560
Width (mm) : 106
Bearing dimensions and specification in SKF catalogue:
d - 420 mm
D - 560 mm
B - 106 mm
C - 106 mm
b - 16,7 mm
d2 - 459 mm
r1 min. - 4 mm
r2 min. - 4 mm
D1 - 520 mm
K - 9 mm
da min. - 435 mm
Da max. - 545 mm
ra max. - 3 mm
Weight - 74,5 Kg
Basic dynamic load rating (C) - 2040 kN
Basic static load rating (C0) - 4150 kN
Fatigue load limit (Pu) - 300
Reference speed - 1000 r/min
Limiting speed - 1100 r/min
Calculation factor (e) - 0,16
Calculation factor (Y0) - 4
Calculation factor (Y1) - 4,2
Calculation factor (Y2) - 6,3