The shaft you see sticking out in the middle is the input shaft. That metal plate around it which is held by two bolts retains the oil seal and probably the bearing.
Pretty sure the input shaft bearing can't be replaced without taking the box apart. What you're seeing in that picture is just the release bearing guide tube.
If it's definitely the input shaft bearings then I'd probably recommend just trying to get another gearbox for a half decent price and fit that. Not a difficult job really, it's just time consuming! Done one the other week in about 4-5 hours though with the help of a couple of folk who knew what they were doing. If you're handy with spanners you could have it done in a day.Not what I wanted to hear. I think dismantling a box may be slightly out of my league. There seems to be a lot of YouTube video's for Honda gearboxes but couldn't find any for renault
I just had a look at the box in the garage. The metal plate and tube is easy to remove and the oil seal is behind. The oil seal can certainly be chainged without diamantling the box, but I think it is highly unlikey you could do the bearing as well.
If it isn't urgent keep an eye out on ebay for a used box at a good price, then buy it.
If you are not in a rush then you can wait until the right one turns up.
You should get a good used one for about £200-250 delivered or a bit less if you are willing to collect.
Once your old box is out you can either repair that as keep it as a spare or sell it as suitable for repair and get some money back.
This might sound like a daft question but have you checked that the gearbox has oil in it?
They do tend to leak a bit and over time it can disappear.
No I haven't. It's just had a new engine put in 2 month a go which they put new fluid in.
It's just the butterfly lug on the front?
It's not your input shaft bearing, it's your clutch release bearing that's knackered.
It slides over that input shaft and attaches to your clutch fork.
The small part in that picture.
Yea that's clutch release bearing, I'm 99% mine did it that way round years ago