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Electric Motors/ballpark suggestion on kind of motor?

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QUESTION: Hi,

I'm hoping you can give me some direction here.

I need a reversible, variable speed motor that will turn a platform about 20" across with an up to 400 lb load on it at about 2-8 RPM.

I have no idea if I'm describing a big or small motor, direct drive, belted, with transmission or what. Would need to plug into a regular 110 outlet.  
  
Much obliged for any suggestions.

Happy New Year,

Mike

ANSWER: For a low RPM you need a motor with a gear box. Motor 100:1 ratio or equivalent.
eg if motor is running at 800RPM the output shaft of gearbox will be at 8RPM.
get a permanant magnet DC motor 1/2 HP with a gear box. And a DC drive which will give variable speed with oprtion to reverse.
Look at Baldor motors on line.


---------- FOLLOW-UP ----------

QUESTION: Thank you, sir.

I hope it's not too much trouble, but since this is completely out of my realm of expertise, I was wondering if you wouldn't mind checking this link to a Baldor motor to see if I'm in the ballpark of your suggestion.

http://www.baldor.com/products/detail.asp?1=1&page=1&catalogonly=1&catalog=CDP34

Thanks very much in advance.

Answer
That one is a motor only.
Check out this link it shows gear motors.
http://www.baldor.com/products/product.asp?1=1&page=1&orderBy=CONVERT%28FLOAT%2C

Electric Motors

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Harcharan Singh Diocee

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Electric motor winding redesign, AC and DC. Troubleshooting, motors controls generators. Vibration analysis, dynamic balancing, root cause analysis: electrical and mechanical.

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thirty five years electro-mechanical and Senior Management

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EASA, CSA, ASTTBC, FSR

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Journeyman Motor Rewinder, Millwright, Industrial Electrician, Vibration Analyst level II. Certified Electrical Technician ASTTBC, FSR Class B, in BC. Laser alignment specialist. Marine machinery repairs. Business Management Certificate. Last 19 yrs as Plant Manager

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