It's a hub/bearing assembly for an FX45 (32 Spline and confirmed), not the FX35 (29 Spline from what I'm reading in my research),but there is an issue with this modern hub and bearing. I have a set that I broke down with plans of pressing the hub into a set of Z32TT/R32 rear bearings. The hub from the FX45 is beefier than the Skyline or Z32TT hubs by 5mm. The FX hub bearing ID measures 50mm and the Z32TT/R32 bearing ID measures 45mm (I corrected the mistake in my previous post). I had a brain fart from a distraction in the shop when I was pressing the FX45 bearing apart from the hub. I ended up separating both of them before I finished taking all of the measurements and comparing the overall dimensions to the Z32 hub/bearing assembly.
My thoughts:
I can machine the FX45 50mm hubs down and press them into the Z32TT/R32 hub bearings, it's very little work being that it's only spinning 2 hubs on the lathe, but that still leaves me using the more expensive and increasingly hard to find correct Z32TT bearings. Should I have a bearing failure in the future, the cost of one bearing will be more costly and troublesome to find. I'm thinking about ordering another set of aftermarket FX45 hub/bearing assemblies so I can finish my measurements. The mounting bolt location was the most obvious difference, everything else looked spot on at a glance when both types of hub/bearing assemblies were on the bench, but the measurements will confirm everything. I'm leaning heavily towards modding a spare set of spindles for the FX mounting bolt pattern, because the cost of replacement parts is cheaper, easy to find and I do like the idea of a beefier hub/bearing assembly.
FX45 Hub/bearing assemblies:
https://www.ebay.com/itm/133105259719