The F634 is a metric, flanged, deep-groove ball bearing with a 4mm bore, 16mm outer diameter, 5mm width, and an 18mm flange diameter . This compact design supports moderate radial loads (dynamic load rating up to 1730 N ) and is suited for high-speed operation (up to 40,000 rpm with grease lubrication ). The integral flange simplifies mounting and positioning in compact machinery and precision instruments .
