Boxford 280

[Lee GouldingParticipant @leegoulding74917]

not sure what I'm on about here Nick but the gears I've just checked are near the belt and are not turning when the lathe is running not the gears under the hood in the oil bath, which is where the majority of the noise seems to emanate from that I think you're hearing

Told you I'm not sure what I'm on about 😀

[John Stevenson 1Participant @johnstevenson1]

Sure it's the motor and not the inverter?

Inverters have a parameter you can play with to alter the noise.

What inverter make and model?

[Nick_GParticipant @nick_g]

Posted by Lee Goulding on 27/06/2017 22:02:09:

not sure what I'm on about here Nick but the gears I've just checked are near the belt and are not turning when the lathe is running not the gears under the hood in the oil bath, which is where the majority of the noise seems to emanate from that I think you're hearing

Told you I'm not sure what I'm on about 😀

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I will embed in the youtube video you sent me a link to :-

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[Nick_GParticipant @nick_g]

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Are the pully's tight.?

You also want a bit of play in the belt. – I think there is about 3/8" in mine.

I see that the change gears as you say are not revolving. I presume this is because the selector is in neutral.

The selector lever (the one in the middle) needs to be over to the right for normal feeding. I am presuming that yours is set on 0.?

If it is on Zero make sure the clutch lever or the 1/2 nuts on the saddle are not engaged or when you start the rascal it will automatically run into the chuck if a high feedrate is selected.

This should then turn the changegears. But as the changegears are not turning ATM that cannot be where the vibration / rumble noise is coming from.

Has the lathe been stood for a long time.? – Possible the belt has formed the shape of the pully's in 2 places.

Nick

[Alan Waddington 2Participant @alanwaddington2]

Sounds more like a dry bearing in the motor than inverter whine…….

[Lee GouldingParticipant @leegoulding74917]

Hi Nick

There is a small amount of play in the belt and yes it's in mitral and does run when I select the auto feed.

I can verify if it has been stood for any length of time but I'm lead to belive it came from a college and I purchased from Premier Machine tools (Steve)

Thanks

[Lee GouldingParticipant @leegoulding74917]

Yes it does seem they are tight but there is a little play in the top pulpy if I left/right turn quick buy hand

[Lee GouldingParticipant @leegoulding74917]

hi John

It's a Mitsubishi E520S

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