Review on 🔧 VOLV Precision Bearings with Shielded Protection for Lubricated Power Transmissions by Anthony Heinrichs

I couldn't open the shields to see the internal construction but I've had other bearings from here that use a metal cage even in RS bearings so it's logical assume they work. The rotation is smooth and silent with factory lubrication. Spins freely and quietly with no noticeable play when removed and relubricated for no-load use.