dc motor run at very low speed

[merv1234]

I am looking at how to run a ball screw at very low speed,(1 inch in 12 minutes), to push a 1000 lb load.. I would prefer to use a servo motor, but because of cost i am being asked to look into using a DC Motor. Does anyone out there have thoughts oin this and reasons to go one way or another.

Thanks
Mike

 

[vpl]

I'd suggest posting this on forum237 .

Patricia Lougheed

Please see FAQ731-376: Eng-Tips.com Forum Policies for tips on how to make the best use of the Eng-Tips Forums.

 

[eromlignod]

Use a gearmotor.

Don
Kansas City

 

[sreid]

A DC Motor and a gearbox. See Leeson (among many others)

http://www.leeson.com/products/stock_dcmotors.htm

90 VDC Motors run off of full wave rectified 120 VAC and the speed can be controlled using phase controlled SCRs.

 

[ScottyUK]

Give serious consideration to using an AC indution motor and a vector drive, either sensorless or with an encoder if you need higher precision. The AC systems aren't quite as good as a true servo where very high performance is required but are plenty good enough for most positioning applications. The AC motor is tougher, cheaper, lasts longer, and needs less maintenance.

Follow vpl's advice and re-post in forum237 where you will get some opinions from guys who work with these things all day every day.


----------------------------------

If we learn from our mistakes I'm getting a great education!

 

[plasgears]

DC gearmotor packs a lot of punch in a minimum package. DC motor to gearbox to worm drive.