I’m trying to follow a YouTube tutorial on making a roller bender however I can’t find this type of caster wheel where the centre is a metal ‘v’ in cross section:
I'm not a home at the moment so can't take a picture but what about wheels from a rope snatch block?
Ones I have use decent bearings and are steel.
What dia pipe / bar do you want to roll?
A couple of pics of my sliding gate rollers. First with a bit of Unistrut when I was playing with heights:
Then I replaced it with a bit of galv box:
I wonder if this is more "encompassing around the "tube" than a castor with the rubber off would be? Above is for a 20mm dia tube as I said. They also do a 1/2" groove. Pretty sure these have bearings.
Just coming back to thank all those members above who helped and especially wyn who gave the suggestion regarding the sliding gate roller which is the route I’ve followed.
It’s a bit rough and ready and I’ve no idea if it will work as I’ve run out of puff for one day!