Yes, ball bearings can be fixed, but it depends on the extent of the damage. Damaged bearings can lead to downtime and lost productivity, so it's important to prevent damage before it's too late. One way to prevent damage is by selecting the right bearing for the right application, which can reduce unnecessary downtime, production loss, costs, and damage. However, if a ball bearing is damaged, it may need to be replaced. Additionally, ball bearing hinges can have fixed pins for security reasons, but this is different from repairing a damaged ball bearing.