The bearing load of primary concern is axle shaft end
thrust. When a vehicle moves around a corner centrifugal
force acts on the vehicle body, causing it to lean to the
outside of the curve. The vehicle's chassis does not lean
because of the tires' contact with the road's surface. As
the body leans outward, a thrust load is placed on the axle
shaft and axle bearing. Each type of axle shaft bearing
handles end thrust differently.