Quote Originally Posted by irving2008 View Post
I have a VFD to go on so plan to increase the belt ratio to up it to 3000 or so... tho running at 1800mm/sec with a 6mm cutter would ideally like 5000rpm on the spindle... not sure the bearings will like that much tho...
Can you not up the frequency instead ?

I renewed my bearings with SKF they are rated at 7K

I have run mine at 3.5K but I need to change the belts as I have the twist lok type and you can see the effect of centrifugal force. Scary

I do intend to go to 5K

Phil


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