Hi Guys,
Just looked at a 4020 with the 32mp control on it.

The spindle sounded kind of like dry bearings when we first started it. The owner told me he thought it has sat for ~1 year. After running it at 1200 for about 5 minutes we checked to see what the max was and it went to at least 10k. When we first ran it at 10k it sounded pretty noisy so I slowed it to ~4k for ~ 5-10 minutes before ramping it back up. After this it sounded better but still kind of noisy.

Do these have grease pack or oil mist lube?

The machine was filthy inside like MOUNDS of mixed steel/ aluminum chips and the x axis left cover was off. According to the owner it was so they could clean the chips out because it was full of chips in there. The x ways (box) had some light rust on about 1/2 the way.

It did manually jog all 3 axis ok. although the z axis seemed a bit jumpy when hand wheeling it at first.

It is priced cheap but.. I don't want / need something that will need a spindle soon.

Any recommendations from you fadal guys? I am used to mitsubishi's

THX in advance