Are you talking about a motor home or a trailer? Some trailers come with zerk fittings from the factory, motor homes do not. They are automotive chassis and the wheel bearings, like your car, truck or vans shouldn't need to be re-packed. If the have zerk fittings someone put them on, bearing buddies, they do nothing but blow out seals. Your axles are not drilled and cross drilled for them.
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