The bearing came loose after very little use and caused significant damage to my dining table project which I spent a lot of time on (plus the cost of materials of course). and consumables). I only cut about 4 meters before the bearing fell off and the router gouged the edge of the table top I'm working on. I set the first pass to a fairly shallow depth so as not to try to remove too much material at once. I naively trusted this piece, which turned out to be a costly mistake!