dc motor
Here is another non-answer to your question,,,,,
Motors in US are usually rated in HP (horse power) which is also 748 watts. I think in Europe they rate motors in W's or KW's mostly.
Your motor would be then have a peak hp of about 1/2 HP, so if you consider de-rating to 75% for continous duty, that would be .375 HP (3/8 hp) or about 280 WATTS. For a 24 volt motor, that is about 11-12 amps continous at that loading.
Also, back EMF , which is the voltage created in the turning motor and opposes the applied voltage changes with load,so for example,if your running motor tries to pull something up a hill, the motor will try to slow down - reducing the back EMF (opposion voltage) and more current will flow thru the motor (provided the supply can give it) which reflects in the fact that it takes more HP (E X I) to pull up-hill .
If you can't get more info from the manufacturer, you may have to test the motor under load to make sure it doesn't overheat like Melanie suggested.
don
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