Xjet i had spoke with the company i boaught the bearings and this is what they said

"Seals and shields are situated between the inner and outer rings of the bearing. The purpose of seals and shields are to protect the inside of the bearing from contaminants and to help prevent the leakage of lubricant from the bearing.

He said that bearing is for that motor......and said he has had no troubles in the past...
Xjet this is what it is
R6-T9h-c8/23
ID:9.525
OD:22.225
Width: 5.556
Manufacturer, Swiss