5c Draw Bar For 13 Inch South Bend

J

joe p

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I'm trying to find a 5c draw bar for my 13 inch south bend lathe. Any thoughts as to where? I have already been burned on ebay so I'm a bit gun shy. Thank you in advance.
 
Thank you. Not so sure it would be that easy to make one. It has a bearing with a taper,I was told that the bar would have to be seamless. If all else fails I'm sure going to try.
 
Jim was referring to the draw bar with hand wheel design. It does not have a bearing. And is a simple project. If you decide to build one. The tube could be a little hard to find. I would start with looking at the 4130 or 4140 tubing suppliers. And Enco has a good selection of hand wheels…Good Luck, Dave.
 
Here's what I had in mind: You could put a thrust bearing on the handwheel end, but a floating collar and some grease would work fine.

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Here is a link to DOM seamless tubing: http://www.ebay.com/bhp/dom-tubing

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Minor terminology correction - Drawbars are solid, with an external thread, and are used with collets like MT and R8, and with various types of mostly MT shank milling cutter holders. The photos above all show various types of draw tubes, which are hollow and have internal threads. You can probably make a 5C draw tube or you can buy generic ones various places including eBay. Cut to length to fit your spindle and handwheel. When determining required length, SOP is to have between 50% and 75% of the collet threads engaged when the collet is properly closed on a part or gauge that fits it exactly. Too little engagement and the threads may suffer premature failure. Too much engagement and you may bottom the threads before the collet is properly closed slightly undersized part.
 
I do thank you. As you can tell I'm still learning. I will start school in the spring 2016 after I retire. I don't think 60 is too old to get started do you ? (lol)
 
Another terminology correction. DOM is not the same thing as seamless. It is welded tubing that is cold drawn over a mandrel. Google Drawn Over Mandrel and you will find a lot of info explaining the process. Not many steel companies even make seamless any more.
 
jererp said:
Another terminology correction. DOM is not the same thing as seamless. It is welded tubing that is cold drawn over a mandrel. Google Drawn Over Mandrel and you will find a lot of info explaining the process. Not many steel companies even make seamless any more.
Click to expand...
Also, DOM tubing should be fine in this application. You can't find the weld, the dimensions are accurate, and the finish is good.
 
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