Thread: 2.2kw spindle noise
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16-04-2020 #1
Sound horrible doesnt it!
I'm going to start by checking my VFD setting today just to eliminate any electrical issue and then look into replacement bearings.
Do you have a source for good replacement bearings?
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16-04-2020 #2
Throw it away and buy a water-cooled version.!!..
Being serious now that's knackered so at the least, it needs new bearings. However how long do you run this spindle.? if you run for 4+hours at a time continuously or leave a cooling down period between jobs then I would replace it with a WC version because these air-cooled don't have the duty cycle needed to keep them alive. This will happen again and eventually, you'll end up paying more than price of a WC spindle.
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16-04-2020 #3
Interesting point about the duty cycle. Point taken about the water cooling, good to know. Are all the 9kw spindles they put on Chinese units water cooled?
Yeah I frequently run it for more than 4hrs. Not always continuously thought. I recon the issue started not long after I set that machine up milling a marathon 10hr finishing pass on a 2000x600x100mm epoxy tooling board! I'm going to keep going with the air cooling as I do a lot of foam carving and the spindles dont get hot doing those. I'll get a news set of bearings!
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16-04-2020 #4
Can't answer that question because I'm not Chinese.!! . . . But that spindle you have there isn't 9Kw. It's a 2.2Kw and whether 9Kw or not they still have a duty cycle and these cheaper units won't cut 10hrs continuously for long before they start feeling the effects. I also very much doubt they will be rated S1 so can cut continous.
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