65mm 1.5kw spindle

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1

Hi everyone,
Just a quick question, does anyone know what the max. revs are for the above spindle. It appears that it is set to 24000 with the inverter I have, would a “better” inverter spin it faster?

2

Hey Eugene,

just saying “65mm 1.5kw spindle” is not enough information. Spindles can have very different maximum speeds from 9,000 up to 60,000 rpm. There is a maximum speed for every spindle in its datasheet, I would not exceed it since it may be damaged.
Please do not loose your spindle’s datasheet.

But it is unlikely that spindles <$1000 run higher than 24,000 rpm.

Regarding VFD they have a maximum frequency in their datasheet.
Then you compute the max. rpm that your VFD will deliver this way:

SPINDLE_RPM = $MAX_VFD_FREQ × 2 × 60 / $SPINDLE_NUMBER_OF_POLES

Mostly it will be 400 Hertz × 2 × 60 / 2 poles = 24,000 rpm.

Please do not loose your VFD’s datasheet and the manual (VFDs are very complex).

Thanks,

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3

Also - why would faster be better? I very rarely run my spindle at 20k or higher anyway - 24k has not been a limiting factor in anything I’ve needed to date.

4

Hi Michael,

Thanks for the response to my post, I was thinking that faster was better but your reply was very reassuring to me. In future I won’t worry about speed and hope to have a similar experience as you.

Many thanks

Eugene

5

Thanks for your reply, your mail was very reassuring to me I will now approach the subject in a totally new light.

Many thanks

Eugene

6

Hi again Michael,

Do you know how to connect a spindle to the 1F control box, the only explanation I can find refers to a breakout board but my 1F controller does not have one. Is it connected via L1 and or L2? If so do you know how?

Regards

Eugene

7

You have to buy the breakout board, it’s an optional accessory. You can buy them from Amazon or ebay vs buying it direct from 1F.

8

Hey Eugene,

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9

Many thanks, that’s brilliant.

10

Has anyone used this spindle kit? Wondering how it went if so. Thanks!