6307-Z Ball Bearing Double Shielded ID 35mm OD 80mm Width 21mm6307 Z Single Row Radial Ball Bearing Deep Groove 35x80x21mm One Bearing The 6307 Z deep groove ball bearing is a single row radial bearing built to handle both radial and moderate axial loads. With a metal shield on one side, it's ideal for motors, gearboxes, and general machinery where partial sealing and high speed are key. Inner diameter: 35mm (1. 378") Outer diameter: 80mm (3. 15") Width: 21mm (0. 827") Deep groove design for high speed rotation