I usually mount my 608 bearings in a 7mm wall plate and secure then with 3 bolts and washers in slots positioned around them as seen in the right picture here. These are 6mm bolts, but I would now use 3mm.
Has anyone a different method such as cable ties, pinch clamping etc. which may be a better alternative?
You can a flat plate (with a hole in the plate for the rod) on both sides of the bearing and secure the plates with through hole screws.
I have also seen 50mm "fender washers" used with the interior hole drilled out to be large enough for the rod and the outer ring
of the washers through hole bolted.
tight tolerances and firmly shoved in (needed to stand up on the plate and give a "gentle" kick): no signs it is going to come free on the loose anytime soon.
