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Old 01-23-2020, 02:52 AM   #21
franque   franque is offline
 
Join Date: Nov 2017
Location: Marseille, France -> Conakry, Guinea
Posts: 1,481
To keep water out/keep the bearings greased. Normally the bearings on stuff like this have a seal missing on the inside, so that grease can easily be added.


 
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