What sort of tool do I need to replace knackered bearing

I’ve got an old obsolete pump, parts not available to replace. It needs a he current bearing removed and a new one pressed in.

what sort of bearing pulled do I need to remove this;

The central brass cylinder rotates in the bearing and it has coverts it rotation force into pushing / pulling a piston at the other end of the gearbox casing. I’ve no access to the other end of the cylinder from the other end of the casing so cannot knock it out.

I need to get a puller into either the bearing race to extract the bearing or something to go down the central hole and hook on the furthest edge and pull the cylinder out. Cylinder is ~ 45mm diameter for reference and at least the same deep.

Thanks

What diameter is the central hole?

Do you think a blind bearing puller might work?

e.g.  https://www.ebay.co.uk/itm/235801725996?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=92fChPjxQDW&sssrc=4429486&ssuid=BzKiljJKQsa&var=&widget_ver=artemis&media=COPY

Do not take this to heart.

Nah bollocks you can’t get the shaft off you just haven’t figured it out. Go away and have a good think because there’s no way that started life in that configuration. Split a case or whatever and the shaft will be able to be extracted. Not necessarily easy but there’s always a wayyl.

You can get pullers that lock into the gap in the bearing between the balls – no idea what they are called

Two mins on the net found this – this sport of thing

https://www.penntoolco.com/simatec-simatool-ball-bearing-puller-310-1210-bp-61/

https://cdn11.bigcommerce.com/s-4s9liwcv/images/stencil/1280×1280/products/336809/354734/BP-61-pic3__70381.1539879079.jpg