Have you thought about replacing the entire bearing carrier assembly with a used one? It might be the easiest and lowest cost way out. Here's what happened to me:

I had a rear bearing in a '74 240D that started squealing in CA but then stopped so I ignored it. When I got to TX, it was still quiet but it got really bad but I didn't notice it until the brakes didn't work. The rear brake got so hot from the rotor rubbing on the brake pads that it melted the wheel cover (after market plastic).

Of course by that time the bearing carrier was chewed up and had to be replaced. Luckily I had one out of a parts car at home in PA, so I had my son UPS it overnight to me in Alanreed TX (Exit 135 I-40 about 35 miles west of OK-TX border)and it was installed the next day.

It couldn't have broken down at a better place. Two guys worked on it about 8 hours and only charged me $150. This was about 8 years ago. When I go by there, I still stop in and say Hi to Bill Potts the garage owner and chief mechanic. If you ever need help in that area, get Bill. I just can't tell you how helpful he was. This happened on a SAT night. I stopped at a motel and asked about a mechanic.
He showed up almost immediately to find out what the problem was. He told me to bring the car to his shop SUN morning to put it on a lift to diagnose the problem. It was then we decided to replace the entire assembly. MON the old parts were removed and TUE the parts arrived and were reassembled and away I went.
P E H