On Thu, 11 Aug 2011, andy pugh wrote:
Date: Thu, 11 Aug 2011 15:39:32 +0100
From: andy pugh <[email protected]>
Reply-To: "Enhanced Machine Controller (EMC)"
<[email protected]>
To: "Enhanced Machine Controller (EMC)" <[email protected]>
Subject: Re: [Emc-users] Questions about your Stepper kit
On 11 August 2011 13:11, Dave <[email protected]> wrote:
It is about the same thing as rating a motor in horsepower. At a certain power
- Torque and RPM are interchangeable to some extent
Or, to put it another way, no matter what you do with the gearing you
will have 400W available anywhere in the drivetrain.
The same is true for car engines, regardless of the engine torque, the
car making the most power will have the most push at the wheels.
--
atp
"Torque wrenches are for the obedience of fools and the guidance of wise men"
Another thing to consider when comparing servo motors to step motors is that
it make more sense to compare the servo motors peak torque with the step motor
torque rating. This peak torque is usually in the range of 3-5 times the
continous torque (subject to servo drive limits of course) and can be applied
for a considerable time (its a thermal limit), so a 400W motor can typically
supply more than 1000W for minutes at a time.
Peter Wallace
Mesa Electronics
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