Don’t know if this has been discussed before.
The bearings on my trolley disintegrated last year so I bought another set of wheels second hand, these have just done the same.
I have now bought and replaced with six new bearings which should hopefully cure the problem.
The bearings are 6000 ZZ NEU, BRG 10x26x8
Easy to fit, just drive the old ones out with a large socket
I bought mine from Main Line Bearings, Percy Street, Leeds LS12 1EL – 0113 2633321
Although you could probable get them at any good bearing suppliers
Total Cost £15.12 + vat