Rule number one of zerks. Wipe off the nipple before and after attatching grease gun. Myself and anybody else with moderate mechanical skills can make most any spindle serviceable. Its just tough to compete when fleabay is filled with 2 and 3 pack of chinese spindles for less than a 100 bucks. Just like the auto industry the money is in parts not service. Engineers can build in an expected failure point and guarantee a replacement sale.
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