As David said, the original ones were a compliant material of cloth etc. What I found and used were plastic self lubricating bushings that I believe are used in the food conveyer industry. The ID and OD are common inch measurements , 7/8 X 1 ? (can't remember). I found them at Grainger in the exact size and 1/2 the correct width. However they come in a pack of 5 so you use 2 per side which makes them easy to install . They are made in Germany and cost a whopping $6.00. I will look for the Grainer part number. Since the original ones were a soft material, the shaft is not usually worn. Therefore the new bushings will make it perfect again for about $6.00. You will have to fuss with digging out the old bushings,
Just an opinion
Floyd