For all of you who own a "budget" mill vise like I do, please see the attached video for a design flaw repair that can be made relatively easily and may save you some troubles down the road. After watching the video I pulled my vise apart and the bearings fell out. Here is a photo of on of the races:
Check out the video and hopefully you can prevent damage to your thrust bearing before it's too late:
Check out the video and hopefully you can prevent damage to your thrust bearing before it's too late: