I need to know... because I am installing an elevator and i don't want a brand new motor to suddenly break apart under heavy load.
2006-06-25 09:22:30 · 7 answers · asked by I like horses 1 in Science & Mathematics ➔ Physics
well you can use 1 hp motor and use it to lift 1million ton, but it would take one hell of a long time for it to lift...
horsepower is a measure of POWER not energy...it's horsePOWER not horseENERGY...
dude you are f'ing dumb...
2006-06-25 09:38:11 · answer #1 · answered by kmclean48 3 · 0⤊ 6⤋
5 Horsepower Motor
2016-11-11 05:04:39 · answer #2 · answered by ocasio 4 · 0⤊ 0⤋
The horsepower rating tells you nothing about how many pounds a motor will lift. For that you need the torque rating, given in in-lbs. If a motor has a torque rating of 100 in-pounds, it will lift 100 lbs with a 1-in radius pulley, 10 lbs with a 10-in radius pulley.
The horsepower will tell you how fast that weight can be lifted, but you do not need to use that--the motor specs should give you the torque vs rpm so you can determing the motor you need from the rate of rise and weight of elevator. You should design in a safety factor of at least two for the motor torque, and more than that for the lift cable tensile strength.
If the motor is under-torqued or under-powered, it won't break apart, but will stall. If allowed to remain stalled for a period of time it could overheat and destroy itself, but many motors have built-in thermal protection.
If this elevator is going to carry people the design must be approved by a registered electrical engineer.
2006-06-25 09:41:53 · answer #3 · answered by gp4rts 7 · 2⤊ 0⤋
HP is a measure of power - ie rate of expending energy - so the correct question is "how many pounds per minute".
1 hp = 33,000 ft·lbf·min−1
So with 1 HP you can lift 33,000 pounds 1ft against gravity per minute. Or 3,300 pounds by 10 ft. Etc.
BTW the HP is a horrible, archaic unit of power.
2006-06-25 09:51:46 · answer #4 · answered by Epidavros 4 · 1⤊ 0⤋
Like I hope your not doing the installation of any elevators that I'm going to be on. (Smile). How is it geared?
2006-06-25 09:42:27 · answer #5 · answered by Anonymous · 0⤊ 1⤋
Oh man. You're not the guy that's fixing the elevator in our building are you? Oh my, we're really doomed. I knew the company was cheap but this is ridiculous.
2006-06-25 12:42:39 · answer #6 · answered by Rev OldNick 2 · 0⤊ 0⤋
not sure you should be installing an elevator if you can't calculate this on your own. hopefully it will not be elevating people.
2006-06-25 10:59:44 · answer #7 · answered by ferrarifan24 2 · 0⤊ 0⤋