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Magesh
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Join Date: Dec 2011
Posts: 11

To Know the Required Power Motor

12/28/2011 11:39 PM

Dear friends, i decided to fix one weight elevator in my company. That lift should take around 1ton weight from ground to 50 ft height.. So i want to know how can i select motor for that.. If you know, please tell me..
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Tornado
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Technical Fields - Technical Writing - New Member Engineering Fields - Piping Design Engineering - New Member

Join Date: May 2009
Location: Richland, WA, USA
Posts: 21017
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#1

Re: To know the required power motor..

12/29/2011 12:12 AM

How fast?

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Magesh
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Join Date: Dec 2011
Posts: 11
#2
In reply to #1

Re: To know the required power motor..

12/29/2011 2:16 AM

thank u for reply. i think 1m/s speed is correct for elevators.
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Tornado
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#3

Re: To know the required power motor..

12/29/2011 6:31 AM

One hp = 33,000 ft-lb/min or 550 ft-lb/sec. Your load is 2000 lb × 3.2808 ft/sec = 6561.6 ft-lb/sec = 6561.6/550 ≈ 11.93 hp theoretically. Because of acceleration and gearbox inefficiency, you would need a 15 hp motor (or maybe 20 hp). The gear reduction ratio will depend on the drum diameter you use for the lifting cable.

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TonyS
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#4

Re: To Know the Required Power Motor

01/01/2012 11:02 AM

If you have to ask an open forum I really don't think you should be designing this lift. The legal implications are a minefield to say the least. Contact a reputable lift company.

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