Spindle 2?

[Ross77]

Ups. got an itchy trigger finger and just bought One.

BRAND NEW TELEMECANIQUE ALTIVAR 31 MOTOR INVERTER DRIVE
MODEL No. ATV31HO75M2
STILL IN BOX
SINGLE PHASE TO THREE PHASE MOTOR INVERTER
INPUT 220V AC 50 Hz
OUTPUT 0.75Kw 1 HP 240V THREE PHASE
COMPLETE WITH INSTRUCTIONS AND CD

just under 60 notes with postage, 1HP ??? what have i done...Supose it will be ok for the little lathe

[John S]

Decent bargain, they are good inverters, not really any bad modern ones about.
Mitsubishi's can be a pig in that they often sell the programming panel and filters seperate so it adds up to ££££.

You should have no problem with this one.

.

[Ross77]

Phew, thats a relief, I didnt even google the manufacturer (not like me), saw it and had to go out, so put £50 on it just in case.

What would be a safe motor rating to use with it? Or will the instructions tell me...

[John S]

Technically anything up to 1 HP but most can be programmed for 150% overload safely so it will run a 1 1/2 HP but may trip under hard load.

I have one of the 1 1/2Hp Chinese spindles here running off a 0.55Kw [ 3/4HP ] IMO Cub inverter, the cheap one, programmed for 150% overload and it runs fine with up to 6mm cutter in it.

Been running test cycles with this for about 4 hours, non stop at 24,000 rpm and no problem although it is a bit small and I wouldn't recommend it for continuous use or any larger cutter.

[Ross77]

I have one of the 1 1/2Hp Chinese spindles here running off a 0.55Kw [ 3/4HP ] IMO Cub inverter, the cheap one, programmed for 150% overload and it runs fine with up to 6mm cutter in it.

Been running test cycles with this for about 4 hours, non stop at 24,000 rpm and no problem although it is a bit small and I wouldn't recommend it for continuous use or any larger cutter.

Cheers, Thanks for all the good advice. Now I know that the VFD/ inverters are affordable I will probablly forget the high rpm spindle and just use a router for wood, ( should keep Kip happy:nope:)Machine mart have a 2200W ali based one for £90 ish, Should be able to deal with Maple and such like

[John S]

Kip,
You only need to get the stator wound, the rotor is just an alloy and iron lamination.
You can even get standard motors rewound from 2 pole 3,000 rpm at 50 hz to 12,000 rpm at 200 hz without then going pear shaped.

You need to work on the spindle as regards tool holding etc and front bearings but it can be done.

Just a teaser



.

[Ross77]

I wouldn't know a piece of Maple if you hit me with it

Tempting..:heehee:

Kip,
You only need to get the stator wound, the rotor is just an alloy and iron lamination.
You can even get standard motors rewound from 2 pole 3,000 rpm at 50 hz to 12,000 rpm at 200 hz without then going pear shaped.

You need to work on the spindle as regards tool holding etc and front bearings but it can be done.

Just a teaser

How, where and how much????
No problem with bearings and tool holder as I'm going to use dedicated spindle with ER32 collet chuck and then just use different motors to drive it