I asked my boyfriend about the bearing assemblies before I bought my Raptor Mod Wheels (which I've been posting about in my own thread). he is a diesel and regular automotive mechanic so he knows all about bearings and seals.
I may be a day late and a dollar short on this thread, but I figured I'd post anyway for anyone who may look up this thread in the future.
The stealth wheel's bearings I believe are completely sealed...which means you can wash the stand and the wheel together and no water will reach the bearings and you don't have to worry about pee rusting the bearings. I've had at least four of them (now that I think of it...I think I had 5 but I just say 4 because I know that for sure lol). I had two flyers and two massive cages I needed to furnish with two wheels a piece ;) Plus squirrels chew a lot no matter what wheel you buy.
The eco stealth wheel's bearings are not sealed and it states they "have no interchangeable parts" (which probably means it can't be taken apart either, but that answer is best left to the seller I suppose).
The raptor mod wheel can be taken off of it's stand assembly and has interchangeable parts, as stated on the website, which allows you to clean the wheel head with no worries about the bearings getting rusted. however, that does not mean the bearings are sealed. They are probably still unsealed, which means that things like pee and water can rust them. However, since it has interchangeable parts, you can replace the bearing assembly I believe.
Also besides veggie oils to prevent rust on the bearings, there ARE food grade lubricants out there apparently that are used on the doors to food trucks for example. I'm assuming food grade would make it safe for a glider should you want to do preventative maintenance on the eco, but don't hold me to it. i
ll ask him what the brand is.
I hope you got your qot your wheels. And I agree, most shippers eat the cost of shipping. Boxes are more expensive than you think and the flat rate boxes from USPS for example really aren't big enough for a large wheel. lol I could ask my uncle about that he works for the PO :)