7-1/4 Bearing Noise........

If you've pulled axles out of an 8 3/4, the 7 1/4 comes apart the same way just doesn't have the adjuster. Unfortunatly the 7 1/4 uses sealed ball bearings on the axle insted of the tapered bearings, which if they are noisy means they are shot. The bearings are pressed on to the axleshaft along with a retaining ring, so it wont be a quick fix unless you have a press or access to one. Like Redfish said if you can find an axle with a good bearing, that would be the easiest way to go.