Replace bearing.
Figure 4
Galling Metal smears on roller ends due to overheat, lubricant failure or overload. Replace bearing - check seals and check for proper lubrication.
Figure 5
Abrasive Step Wear Pattern on roller ends caused by fine abrasives. Clean all parts and housings, check all parts and housings, check seals and bearings and replace if leaking, rough or noisy.
Figure 6
SP000016
General Maintenance Procedures Page 15