Thread: Chinese Spindle

That's a whopper of a spindle.
It is difficult to assess with a couple of photos and the best advise I can give you is mount it and try it out. Retune all your motors as the weight might make a difference there.
5 HP is a lot to be running so are you running out of single or three phase outlet?

Rod
I will be running it single Phase.
The reason why I picked this particular spindle was that it was the only one with an ER20 collet (from this supplier love happy). I was astounded by the weight.
Attached is a pic of the antibacklash nut I am using, it is mounted through 1 side of a piece of 30 X 30 mm by 3mm aluminum angle. the other side of the angle is bolted to the Z slide. A lot of weight for a short bit of aluminum.

Cheers Mike

As far as I know, the largest VFD that will run on 240 v single phase, is 2.2kw.

Greg

Hi Mike
Even the 1.5kw spindles are heavy - certainly a lot heavier than a die grinder. You should see a big difference in noise and performance over the die grinder.
I can't see the amps for the 4kw on his site but a 3kw uses 12 amps so you might need 15 amps or more for the 4kw.

If you are looking for collets then try this site . This is the same ebay seller we have used but cheaper on this site and freight is very reasonable. He has both imperial and metric collet sets for the ER20.

Yes the aluminum angle might be a bit light for the spindle but no harm in trying it first. If it fails I would be looking for a block of ally and machining out a hole for the nut - use your current setup to machine it.

The Dumpster nuts are well designed and get good feedback.

Rod,

I will take your advice and beef up the aluminum. Yhanks for the info on the ER20.

Greg
I assume from the write up and the attached wiring diagram that it is single phase.

Mike

With a massive amount of draw I recon you would need at least a 20A plug.

I haven't even seen any 20A plugs or leads so if it is indeed 240V @ 4000W I recon it will need to be wired to the mains.

You blokes are getting me a bit scared now.

I dont know wether I should fire it up or not. I noticed on the other sellers site that he has 2.2kw with ER20 Collett, maybe I should cut my losses and go for one of those.

Mike

Mike

You have said that you have a 4kw spindle. I have to assume you also have a 4kw VFD.

What do the specs on the VFD say? It should clearly spell out the input requirements.

Greg

Greg
As you can probably tell I am a bit out of my depth here.

There is a small sticker on the front of the VFD that reads, 220V 4.0KW.
Below is how it was advertised

Technical Parameters

1) Spec: 105*280 mm (Diameter:105mm x Length:280mm)

2) Power: 4 KW
3) Voltage: 220V~250V
4) Frequency: 400 Hz
5) Speed: 8000-24000 R/min
6) Air Cooling
7) ER20 collet chuck
8) Runout off: less than 0.005mm
9) Grease Lubrication

Tthe supplied VFD Manual gives a table that suggests, as you previously posted, that the max 240V VFD is 2.2KW. I dont know how to show the table here. It is online at http://www.jinlantrade.com/Stock files/VFDManual.doc .

Mike

Originally Posted by jordie1944

1) Spec: 105*280 mm (Diameter:105mm x Length:280mm)

2) Power: 4 KW
3) Voltage: 220V~250V
4) Frequency: 400 Hz
5) Speed: 8000-24000 R/min
6) Air Cooling
7) ER20 collet chuck
8) Runout off: less than 0.005mm
9) Grease Lubrication

The specs that you posted are for the spindle not the VFD

On page three of that doc it shows an example of the VFD name plate. It has the input.

On page eight, in the model list, the ones close to 4kw, are 3.7 and 5.5kw models.

Presumably you have one of these two. Both of them have input specs of three phase, 380v.

Greg

Greg

The VFD Has One and only one sticker as shown in attachments. It reads 220v 4.0KW.

Also an attachment of a thomas table that I have just finished for one of my grandsons 6 coats of clear acrylic.

Mike

I could be wrong here, but the 4Kw on the VFD would be what it is capable of handling, ie you can hook a 4Kw motor up to it. If you hook up a motor of a lower rating it will only draw the amps that that motor draws, ie if you have a 1.5Kw motor (2hp) than that is what it would draw.

What does it say on the spindle, how many amps or Kw is it rated at? That is the important figure, not what the VFD can handle.

Hmm, looked these spindles up on Ebay, the love-happy ones, and it does indeed appear that you have a spindle that is rated at 4Kw. There is no way that's going to run from a 10A power point, and I would say a 15A dedicated circuit would be doubtful as well.

You say you selected the 4Kw spindle because it has an ER20 collet chuck, he does however also sell a 2.2Kw spindle with an ER20 collet chuck and I would suggest that is the one you need.

http://cgi.ebay.com.au/2-2KW-WATER-C...item5ad4ec1306

It probably won't wiegh as much as the 4Kw spindle either. Your existing VFD would run that, so all you would need is the new 2.2Kw spindle, not the spindle/VFD package.

Fred

You are presuming the 4kw VFD that Mike has, can be run from 240v.

That may, or may not, be the case.

Greg