Arch - 909052R should be a roller, and there was a thread quite some time back about them, but I didn't find any suggestions panned out

of course, none of the repro places will tell you what the numbers are on the bearings they sell, and I've never been able to find rollers the right size to fit correctly, tho I've mic-ed new ball bearings and had 2 major bearing places try to match the specs in a roller

considering that the trucks work fine w/ ball bearings and that there are some quality newer vehicles that use'em, rollers aren't an "upgrade" but a modification - no reason to prefer'em - let us know if you find some that work! grin

Bill

Moved over to the Passing Lane

"When we tug a single thing in nature, we find it attached to the rest of the world" ~ John Muir
"When we tug a single thing on an old truck, we find it falls off" ~ me
Some TF series details & TF heater pics