Patio door roller

[Guy79]

Hi
Ever since we moved into our property the patio door has made a terrible racket and has been very difficult to open and close.
We took the door off its runners the other day to find the one of the end stops was being dragged along the track and the rollers were now flattened on one edge.
I have tried to find replacement rollers and have come up blank so far.
Has anyone seen any such rollers like these - and where I might obtain replacements?

I have tried HandlesandHinges.co.uk, but they had never seen one like this before and couldn't suggest anything.

 

[Gazman16]

Havent seen anything quite like that before.Is there anything preventing yo from fitting a better double wheeled set?
As long as they fit are the right height/thickness and you can screw them in place there is not much to patio wheels. Lots available for cheap on ebay

 

[Guy79]

Thank you Gazman. I had looked at the multifit twin wheel jobbies but they only seem to have one fixing point up into the door itself whereas the existing ones have two. There is certainly room to fit one of those twin wheel sets, but I was hesitant in case the wheel would flap up and down as the door moved. Or would the weight of the door prevent that from happening?