What's this called?

i need to order this bearing for a friend does anyone know what
it's name is?

In my former life when I was young and knew everything we used to have a machine that used a similar sort of bearing . I think they are called a "self aligning bearing " bearing and housing sold separately. However I am now older and unfortunately realise I don't really know much at all so could be dare I say it.....wrong. A place to start any way.

Only have a 3 day window on the slip so I need to re-order in advance.