rudecter (Lathe) make a large noise 1

[kanibaltaki]

hey
i have a problem with the reducer of my Lathe machine it make a large noise when he start working i have already chang all the bearing and i had the same résult
i attached a video maybe it will be clear
video link Link

thank you

 

[Tmoose]

Power on at ~ 1 minute into the video.

I think I hear at least three different types of noise.
Clanking rattle ( gear backlash without sufficient load ?)
high pitched whine ( bearings running dry? )
low pitched whine ( gear mesh? damaged gear faces? running dry? )

Was there any lubrication being applied to the bearings and gears?

 

[Compositepro]

The video shows the gears being run unloaded and unlubricated. I do not find the noises to be unusual. They should be a lot quieter when run in oil.

 

[tbuelna]

Does not sound unusual for a spur gear mesh and rolling element bearings being run without lubrication.