I am looking for a special motor. I

[Jevakil]

I am looking for a special motor. It needs to have a hollow core and rotate its outer skin. Is there such an animatl?

Thanks.

 

[cbarn24050]

Hi, yes there are used for conveyor systems.

 

[GusD]

Hi Jervakil

Just like the previous post says,they are used in conveyor belts.I have never seen one, much less worked on one.
I understand they make them up to 50 hp or more.
Try these links and I hope you find your answers.

http://www.marinelink.com

http://www.emerson-ept.com

good luck



GusD

 

[joe818]

Try

http://www.motorizedpulley.com/

I have been using small ones (1/3 to 1/2 Hp) in some demanding applications (100's of starts per hour) for a few years with pretty good success.

 

[jbartos]

Suggestion: Visit

http://www.thomasregister.com

and type Motors under Product or Service which will return 323 companies to approach regarding your motor special needs

 

[Farkel]

Southwest Electric in Oklahoma City repairs such a motor, for the oil industry, where the rotor becomes stationary, and the stator rotates. You might contact them and get the name of the manufacturer.

 

[jclough]

We make such a thing. Tell me more about your application.

 

[Jevakil]

The application is a scientific toy. I need to move an object in a circular orbit. At the center of the orbit is a shaft. The shaft is not fixed. It moves and its orientation changes with time. So I need a motor that I can "fix" on the shaft to create the obrital motion.

Dimensions are fairly small as it is a toy. The shaft diameter could vary from 0.25 inch to .50 inch.

Thanks.

 

[jbartos]

Suggestion: It may be necessary to prepare the motor specification and submit it to a custom motor manufacturer.

 

[RichLeimbach]

How about an outer rotor brushless DC motor? There are some with hollow cores (for automotive fuel pump applications and the like), or you could make a custom shaft that would fit the other pieces of your application.

- Rich

 

[Jevakil]

Sound good Rich. I need to make a custom shaft anyway.

Any further information is welcomed.

Thanks.

jevakil@mapdi.com

One nuclear bomb can ruin your whole day.

 

[stardelta]

There are on the market what are known as external-rotor type fan motors, maybe one of these will satisfy your requirements. The major manufacture are a German Company called Ziehl-Abegg AG. Try a web search quoting "External rotor".