Sorry, English is not my first language. By “wobble” I meant that before installing the bearings in the spindle, the inner race had some small...movement... play...to any direction and if I remember, up and down also, in relation to the outer race. Different from the stock bearings, in which the inner race rotates perfectly centered around the outer ring. And doesn’t move to anywhere besides rotating.
After installation there’s no play, no weird sounds, no “wobble”
The bearings are FAG 7206B-2RS-TVP. You can check them in this link:
https://www.bearing-king.co.uk/beari...x62x16mm/24338
I installed them both with the thicker part of the inner races facing the outside of the spindle head case.
My runout is less than 0.01mm. Is this good at least?
Also, I notice heat only when running at 4000rpm or more. If I use the low speed pulley, that reaches 1600 RPMs, the head and motor and spindle remains at 30 degress celsius.