09-12-2014, 07:55 PM
I can tell you from my beam building experience i developed a tube for a customer where the tube was chopped in 2 places just after the inner bearings and capped off, the tube was then welded back together and then each bearing was given a grease nipple. The axle its self lasted no longer than a ordinary axle. Needle bearings arent grease dependent, from what ive found over the years is the main reasoning for failing axles is badly manufactured trailing arm shafts and badly installed bearings, cheap seals and ovalled tubes. I have had a few dead tubes machined and then sleeved but for the effort and cost it takes id rather use another good tube.