What's the fascination with trailer bearings?

Turtle n Peeps wrote:

So my question to you is, why do you care how others maintain their campers? The only reason I'd care would be if I was buying a trailer used. All other things equal, I'd go with the one maintained every year over one that gets this magical inspection every 7-10.

I don't. The basic question is: Why is there disparity between trailers and TV's because Timken say's they are both a tapered roller bearing.

I could be wrong, so don't slam me, just my observation based on the vehicles I've owned.

You are; but I won't slam you as you have requested.

Hate to break this to you, but what you're doing is not a proper bearing inspection. Do you even remove the inner bearing? How do you possible inspect the bearing without cleaning it off?

Not proper inspection? But yet I have never had a bearing failure. :h LOL, fairies must be inspecting and packing them at night for me!
Hate to break this to you but hubs are a sealed system. If the seals are in good condition and there is no contamination and the grease is in good condition and no spalling on the front side it works for me. Remember, I'm not the one with bearing failures.

You're wrong regarding the lateral forces on bearings on a TANDEM trailer v a car or truck.

See that little 1/8" or 3/16 x 1 1/4" shackle on your trailer? That little piece of sheet metal holds all of that twisting force you like to talk about. How many bearing have you seen fail from side load? (It's really called thrust load but I used common words for you.) There is a reason manufactures use big strong parts in front end steering and suspension parts but scarcely more than sheet metal parts to put with all of that thrust load of yours.