PB25 Spherical Plain Bearing 25x56x22/31 Miniature Plain Bearing 160 mm outer Because they outperform steel bearings

Because they outperform steel bearings where it counts:

UCPH209-28 Bearing

6021-2NSENR Nachi Ball Bearing

N312MY Nachi Cylindrical Roller Bearings

PB25 Spherical Plain Bearing 25x56x22/31 Miniature Plain Bearing 160 mm outer Because they outperform steel bearingsPB25 Spherical Plain Bearing 25mm x 56mm x 22mm 31mm PB25 Spherical Plain Bearing, PB25 consists of a spherical 25mm bore 31mm wide inner ring, an outer ring of 56mm diameter 31mm wide, and in between a copper alloy bushing. PB25 Ball Bearing Spherical Plain Bearing inner Diameter (ID): 25mm outer diameter (OD): 56mm outer ring width: 22mm inner ring width: 31mm Size: 25 x 56 x 22 31 mm Quantity: 1 Bearing Dynamic Load Rating: 4,710 KGF Static Load