how detect key wear for turning machine ?

[alexsurf]

Hello

i made a measurement on a spindle machine with keys to fixe gears on the shaft spindle.
and i have a 155Hz peak with 2 side bands of 38,8Hz

the turning speed is also 38,8Hz.

Dou you think it could be key wear ?

regards
zzlinks@hotmail.com

 

[MikeHalloran]

Only if there are four keys.

Look for something square.



Mike Halloran
NOT speaking for
DeAngelo Marine Exhaust Inc.
Ft. Lauderdale, FL, USA

 

[alexsurf]

i will check for something square or 4 keys

thank you very much

 

[electricpete]

I think it could be key wear.

It sounds like you have harmonics of 3x, 4x, 5x of running speed.

Impacting at 1x such as from looseness can generate a series of harmonics peaking near resonance of the component being impacted.

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