W507Combination Of W4 (Mark High And Low Points Of Eccentricity On Face Of Rings) And W31 (Bearing Inspected To Certain Quality Control Requirements) And W33 (Lubrication Groove And Three Holes In Bearing Outer Ring)
C083Combination Of C08 (Heightened Running Accuracy To ISO Tolerance Class 5) And C3 (Internal Clearance Larger Than Normal)
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