MAX IV axle inner bearing part number 15376
This bearing fits all MAX IV machines that have a axle diameter that are "machined down" to 1 1/16
The second photos shows this "machined down" axle style
It is 62 mm OD which is about 2.44"
The second photos shows the style of outer flange which holds the bearing, the bearing does not incude flanges. If you need the flanges they are available in the axle flange section