This is high quality bearing used in axial fans, motors, drive axles, clutch, idler wheels, HVAC, snow mobiles and many other industrial applications.
Bearings are made of Chrome Steel, pre-lubricated with grease and has rubber seals on both sides to protect the bearings from dust or any other types of possible contamination.
"d" (shaft or inner diameter) = 20mm (.7874")
"D" (outer diameter) = 47mm (1.8504")
"B" (width) = 14mm (.5512")
"r" (radius) = 1.5mm (.059")