Does this roller look ok?

[dandan88]

Guys does my sliding door roller look alright

 

[Pewt]

Hard to tell without taking it out. If the door is stiff or you can hear is grinding, for the sake of just over £20 just replace i would.

 

[Bigsidavies]

As above, impossible to tell. That little white wheel you can see at the rear with the orange rust circle around it carries the weight of the door and has a sealed bearing in it. That bearing is the issue.
Just put a new bottom arm on it’ll save you the hassle of the door getting stuck if the current bearing collapses as mine did.