Replace never lube bearing with traditional bearings

I read so many horror stories that I couldn't take it anymore. I replaced axles with disc brakes and conventional Bearings.
I do have a brand new never used neverlube hub with bearing assembly if someone is interested pm me.

Harley is right, you would need to replace the entire axle assembly. I think the Nev-R-Lubes are the way to go unless you have an outrageously heavy trailer, wrong offset wheels, or the 42mm bearings. Mine are going on their tenth year but I haven't towed anywhere near 50k with them. I only average 2,200# per wheel on bearings rated for 8k axles. I carry a spare drum with bearing pressed in which I can change out roadside in less than a half hour with no chance of dirt contaminating the bearing. With the money saved from regular bearing maintenance over the years I could buy a 20 ton shop press from HF and all new bearings good for another 10 years. I do lift the tires at the beginning of the season and check for axial play and a free spin. No big deal as I am adjusting the brakes anyway.

We had a Neverlube bearing go recently. 6 years old and less than 50k miles. Thankfully, a motorist warned us so we were off the interstate onto a feeder road when it let go. It broke the rim, ruined the tire, the brakes and calipers. We were stuck in a shopping center for 8 days (occurred on a Friday afternoon) because no one carries the parts-we had to order them on line a wait for delivery at a UPS facility. We were able to make repairs and get to our campground where we promptly ordered replacements for the remaining wheels. Thankfully we had a spare and rim to put on. We have Moryde IS and the assembly the spindle is on was bent and we have an appointment to get that replaced soon. it could have been so much worse. No fire and no damage to the body of the RV because we were going at a low rate of speed. Interstate speed would have had much different results.

the only way is to replace entire axle and hub , drum assembly .
the spindles and brake drum hub are not even close.
I have a hub odometer on my 2010 which shows over 60,000 mi. on 50mm never lube bearings on a 5th wheel with 16,000 gvw so far no problems ,I carry a spare but so far no need . they are more expensive about 120.00 each but no repacking or service in 8 years. I assume you have had a different experience.

Just curious why you want to replace a sealed bearing.