I have not done this job my self but I believe the outer bearings are held into the axle housing by a retaining plate.

After you remove the caliper and disc you will be down to the parking brakes and the axle flange sticking out at you.

This is where I have only looked and not touched myself.

I think there is one excess hole drill into that axle flange to allow you to remove four bolts holding the retainer and backing plate for the brakes.

I think once you have that stuff out of your way the axle is pulled out as a unit with the bearing on the axle.
How much pull I do not know but I think a slide hammer with a crows foot bolted to the studs will pull it. It should not be all that hard.
Bearings are only allowed a light press fit on their outside diameters. That's the reason for the retainer. The seals are possibly in the retainer also.
Some are in the axle housing on cars too. Those you can remove by using the end of the axle itself and pop it out sideways. At least on a Ford truck anyways.

The next fun part is pulling the bearing off the axle journal. Getting a bearing separator and gripping under it with some pull action is the challenge.

There are several methods mentioned by other posters that you can search for I'll bet!

Good luck
Phil