FYH Bearing UCPX16 80mm Pillow Block Mounted Bearing Ball Diameter - 1 1/2 inch (1.5") outer diameter is 28mm and

outer diameter is 28mm and the width is 8mm

S61801-2RS Hybrid Ceramic Ball Bearing - ABEC-5 Precision

OD (outer diameter): 74mm

1/8" Flanged Shielded Bearings - Slot Car Axles

a standard bearing size with dimensions commonly used across many industries: 5mm x 9mm x 3mm

FYH Bearing UCPX16 80mm Pillow Block Mounted Bearing Ball Diameter - 1 1/2 inch (1.5") outer diameter is 28mm andUCPX16 FYH Bearing Pillow Block Bearing Cylindrical bore (with set screws) 80mm Inner Diameter Bearing This is the most common type of mounted ball unit. The rib at the bottom of the housing mounting section provides for a robust unit that can withstand great loads from any direction. Mounted units with cast steel housings are also available in this series, and are used for applications with severe loading and shock load conditions. Tapered bore style