View Full Version : rotary table internals

05-29-2006, 03:48 PM
Anyone got a good description of what goes on inside a rotary table in terms of what rides on what, bearings, etc.

I'd like to make one but never having one apart or seeing a picture of one apart I feel that it'd be a bit foolish to just charge ahead without learning from past designs.

I guess one could make a table that was entirely center supported like a spindle with opposing taper roller bearings. But I imagine the real thing has some sort of support out towards the edge, perhaps just a sliding fit?

I'm not interested in the movement aspect, worm wheels and the like. Just the load bearing surfaces.

Pictures, Diagrams or even plans/cad drawings would be greatly appreciated

05-29-2006, 04:06 PM
Probably not much help but here is a home made rotary table:



Beware, the text is loosely translated from Japanese.

05-29-2006, 04:18 PM
I found this also:


It's a small, homemade table for use with a mini-mill.

05-29-2006, 05:36 PM
It's been a while since I had mine apart, and my memory ain't what it used to be -- if it ever was -- but my recollection is basically what you say, "sliding surfaces" at the edge. The top rim of the base is a flat ground surface, and it mates with a corresponding flat ground surface on the bottom of the table. There's an oil hole or two that allow oil to be applied.

05-30-2006, 10:20 AM
There have been some good articles in our Host's magazines.

Projects in Metal issues 4 & 5 volume 11 AUG & OCT 1998.

HSM issues Jan/Feb & March/April 2001.

Regards Graeme

05-30-2006, 12:22 PM
speaking of our hosts selection of books. I was thinking about starting to get some of the projects collection. Is the "Shop wisdom vol 1" or whatever the book that was put together atleast partially from a thread here not that long ago?

06-01-2006, 12:02 PM
This post is to work around the date stamp problem and will throw the post off the top of the list.