Which Spindle and VFD... again

Spindles are 3 phase, and usually rated at 200 or 220V.
You have single phase 240V.

But I'm not sure that calculator will give you an accurate number anyway.

http://www.hsdusa.com/bo/allegati/Fi...x-18_18_2_.pdf

This would give you about 3.25Kw for a 15 amp 220V spindle.

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Originally Posted by ger21

Spindles are 3 phase, and usually rated at 200 or 220V.
You have single phase 240V.

But I'm not sure that calculator will give you an accurate number anyway.

http://www.hsdusa.com/bo/allegati/Fi...x-18_18_2_.pdf

This would give you about 3.25Kw for a 15 amp 220V spindle.

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Yes, calculating at the spindle makes sense now that you mention it... duh!

I think a legit 15amp motor seems to fit with a 3.5KW motor even though the calculator is not accurate but gives a good ball park.

Thanks Gerry

Larger motors tend to have better efficiency and power factors than small motors, so that seems pretty reasonable.

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Originally Posted by adam_m

Yes, calculating at the spindle makes sense now that you mention it... duh!

I think a legit 15amp motor seems to fit with a 3.5KW motor even though the calculator is not accurate but gives a good ball park.

Thanks Gerry

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You will drive yourself crazy with those on line calculators, the same motor could have a 12A rating or less it depends on the length of the rotor and stator windings the longer the rotor / windings they have the higher the amps will be

I have a 2.2Kw that has a 10 Amp rating but the rotor and stator windings are longer than the normal 2.2Kw,it's still only rated 2.2Kw but has a lot more torque and can run at a lower speed than the normal 2.2Kw spindle

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Originally Posted by mactec54

You will drive yourself crazy with those on line calculators, the same motor could have a 12A rating or less it depends on the length of the rotor and stator windings the longer the rotor / windings they have the higher the amps will be

I have a 2.2Kw that has a 10 Amp rating but the rotor and stator windings are longer than the normal 2.2Kw,it's still only rated 2.2Kw but has a lot more torque and can run at a lower speed than the normal 2.2Kw spindle

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Yep, already past crazy on that front... thanks for the feedback.

Adam,

Just make sure you buy from a reputable supplier....:)

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Originally Posted by ericks

Just make sure you buy from a reputable supplier....:)

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Not sure how that's going to work out for me... since they are Chinese vendors.

When buying through Amazon, they want you to deal with the vendor directly, hands off the transaction. They just want their cut of the transaction and Ebay has the same policy but even harder to get things resolved. None of the Chinese spindles carry a US Warranty that I'm aware of so you're out of luck there... so it's a crap shoot in my opinion.

Anyone have some suggestions for reputable Chinese vendors?

I'm sure that will get some reply's.. :argue:

Quote:

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Originally Posted by adam_m

Not sure how that's going to work out for me... since they are Chinese vendors.

When buying through Amazon, they want you to deal with the vendor directly, hands off the transaction. They just want their cut of the transaction and Ebay has the same policy but even harder to get things resolved. None of the Chinese spindles carry a US Warranty that I'm aware of so you're out of luck there... so it's a crap shoot in my opinion.

Anyone have some suggestions for reputable Chinese vendors?

I'm sure that will get some reply's.. :argue:

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Just stick with the known name brand spindles it does not matter where you buy or who you buy it from, you picked out a known name brand spindle stick with it, same as with VFD Drives there are good and not so good in the low cost VFD Drives, if you are unsure of anything pay more and buy from a US supplier and get the same thing

Quote:

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and Ebay has the same policy but even harder to get things resolved

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If you pay with PayPal, they'll always side with the buyer.
When buying CNC components from China, I always prefer Ebay to Amazon. And I buy a LOT of stuff from Amazon.

Happy Thanksgiving..!

I need to remake my mount plate for the new spindle ordered and I was wondering if anyone knew what size bolts the 3.5kw air cooled spindles take? I can't seem to find anything on the web or from any schematics that have been put out.

I'm guessing that it's probably the same bolts used for other sizes as well..

Thanks.

Adam,

Finally found the sizing.. 4-M6x10

Thanks

So this week the spindle and cable both arrived... yeah!

I bought 20ft. of Igus cable and the following spindle now all I have to do is figure out how to program the VFD.



Adam,