Re: rod-mill project - "mains" electric motor advice

"Richard Smith"  wrote in message news:m1r01kwsh9.fsf@void.com...

I will go with "off the shelf".  Now seen what's needed.
Time si too valuable.

Now that you have refined your estimate, before spending both you might consider if the desired result is worth the available time plus budget.
I had the same decision to make when designing and quoting custom equipment and with collecting my own firewood. When overtime was available my time was more valuable working it than logging. There was enough down time between R&D projects to stay far enough ahead on the wood, plus cutting and handling it substituted for a health club.
I could never correctly estimate the time to complete a new type of project. Cutting corners early just cost more time later. Last summer's sawmill work took twice as long as planned, much of it unexpectedly repairing and upgrading equipment. The "2000 Lb" gantry eventually lifted 3600 Lbs. The driving time to replace locally bought hardware store parts with stronger industrial ones ate up half a day.
https://www.riggingwarehouse.com/rw-lifting-rigging-hardware/rw-connection-repair-links/rw-hammerlocks.html?
Waiting for a critical order I hadn't planned for cost several days of reduced productivity.
https://www.amazon.com/Klau-Industrial-Hanging-Display-Factory/dp/B0CFFCSFJW/ref=asc_df_B0CFFCSFJW?
jsw