[SEL] OT? Lathe HP question

[Edd Payne]

Hi Curt.Can't tell you without knowing the size of the lath but be a little 
careful with inverter control .They use a lot of them here at the local 
flour mill and overheating at low motor speeds was a problem when we first 
started using them and we had to match the HP and application very 
carefully.With the motor going slow the fan in the motor becomes 
ineffective.
EDD PAYNE
PO Box 364 Gulgong N.S.W
Australia
2852
Phone:0263742387
edsengns at optusnet.com.au
edsengns
----- Original Message ----- 
From: "Curt" <curt at imc-group.com>
To: "SEL" <sel at lists.stationary-engine.com>; "SEL (Oldengine.org)" 
<stationary-engine at oldengine.org>
Sent: Tuesday, October 24, 2006 5:24 AM
Subject: [SEL] OT? Lathe HP question


> Guys,
> The Carroll Jamison lathe I am reburbishing was originally a line shaft 
> driven machine. At the moment my plan is to direct belt drive it with a 3 
> phase motor using no gearbox. I am thinking of using an inverter to 
> control motor speed.
> But I don't know what HP to put on it. 2,3 or 5HP? Inverters are pretty 
> good at giving full torque even at slow speeds so oversizing the motor to 
> accomodate low speeds shouldn't be necessary.
> The chucks are marked 10" and it look like the lathe will swing about 14 
> max. (but not over the carriage)
> Curious what HP motors you guys have on your lathes. This will give me an 
> idea how to size the motor for this one.
> Thanks,
> Curt Holland
> Gastonia, NC
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