No, I meant what I said. Why would bearing wear be dependent on the load (power being transmitted) through the axle of the mag unit? I realize wear would be dependent on the radial load, but that will be constant, and is adjusted by the setting the adjustment screw to press it against the wheel. The torque loading, as adjusted by the magnetic setting, wouldn't seem to me to affect the bearings hardly at all.

Do you run higher resistance settings with lower wheel speeds, or vice- versa?