These tie downs are great hubs. Never have to remove bearings to repack them.
Oil bath bearings have been used in the trucking industry for decades with no issues. Why do they use them on heavy duty trucks? Because they are more reliable.
I have never lost an oil cap on a truck , trailer or boat trailer. Can't say the same thing for grease caps or bearing buddies, and I have a LOT more miles on oil baths. Never had a bearing failure on oil bath bearing either, can't say the same for grease cup bearings.
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