Originally Posted by
Capt Quentin McHale
and it is this matching bevelled shape of the bearings and bearing seats that pretty much holds the wheel on the axle.
Taper roller bearing naturally want to increase the separation between the inner races. Something has to oppose that natural separation force or the wheel will depart. An axle nut typically provides that retaining force. The axle nut holds the taper roller bearing with the correct loading and also keeps the entire wheel assembly on the axle.
The taper (or bevel as you describe it) of the bearings does not contribute to retaining the wheel. It does exactly the opposite.
In what way does the 777 wheel assembly defy these general principles?