30x60x21 mm SKF 51306 thrust ball bearing is designed to carry axial load. Always compare the full designation and design with the original bearing when selecting a replacement.
30x47x11 mm URB 51106 thrust ball bearing is designed to carry axial load in one direction. It is used where force acting along the shaft axis must be reliably supported.
30x72x19 mm SKF bearing with the complete designation 1306 ETN9 SKF. When selecting a replacement, compare the full designation, dimensions and design required for the application.