Hi everybody,
Finally things starts to come together. I got the grinded shaft back the other day - looks absolutely beautiful:
I cleaned the two lower bearings and packed them with grease. The recomended amount for 72XX series bearings is 1.3cm³ but I didn't have any good way to measure that so I filled them, rotated, whiped off excess, rotated again and so on.
I then put the shaft in the freezer and the bearings in the oven on low heat, 80-100C and left them there for a while:
After that they went together without too much effort. I used a piece of aluminum pipe and a plastic hammer to push them om the shaft:
Then I found out that I didn't have any LOCTITE to secure the KM-nut to the shaft so the couldn't mount it in the housing. But I pressed the drawbar tube into the spindleshaft and temporarily fit the gripper to the drawbar for a first test - seems like it actually might work!!
Hopefully I'll be able to fit it in the housing later today, will post again.
/H.O