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jfsmith
04-25-2003, 03:39 PM
Does anyone have a source for 1 inch SAE jam nuts. I need them to be 1/4 to maybe a 1/2 inch thick.


Jerry

SGW
04-25-2003, 04:33 PM
Not sure if they have 'em, but if I were looking I'd start with www.mcmaster.com (http://www.mcmaster.com)

G.A. Ewen
04-25-2003, 05:17 PM
Jerry, Chuck up a 4"x1" bolt, center drill it, then chuck it by the head, slide on a piece tubing so the nut won't run up to the end of the threads, put on nut, run up tailstock and cut the nut with a parting tool. Works for me. http://bbs.homeshopmachinist.net//biggrin.gif

gunbuilder
04-25-2003, 06:02 PM
<font face="Verdana, Arial" size="2">Originally posted by G.A. Ewen:
Jerry, Chuck up a 4"x1" bolt, center drill it, then chuck it by the head, slide on a piece tubing so the nut won't run up to the end of the threads, put on nut, run up tailstock and cut the nut with a parting tool. Works for me. http://bbs.homeshopmachinist.net//biggrin.gif </font>

I seem to recall if the nut is split with a saw and not true it will do a better job of locking. Less likely to come loose on it's own.

Thanks,
Paul

jfsmith
04-25-2003, 11:28 PM
I found the jam nuts at McMaster-Carr, they cost about what I paid for the die to thread this arbor.

Thrud
04-26-2003, 05:14 AM
Jerry
I buy large jam nuts all the time at my local bolt house. They are grade 8 parts, but the price is not that far from regular nuts anyway.

Also, Carr-Lane as well as other workholding manufacturers make hardened ones (pretty too).

jfsmith
04-26-2003, 02:40 PM
I have the nuts but need to reduce the width of them, should I try a parting tool, or just use a carbide lathe tool?

These are the hard, and pretty gold coloured ones.

Jerry

jfsmith
04-26-2003, 05:26 PM
The jaws on my 7 x 10 lathe don't extend enough to handle this size of nut, so I mall them to size or use my surface grinder or maybe my belt grinder to reduce them.

If anyone wants to volunteer the use of their shop to do I would trade some nice stuff that I have. Like gems or arbors or whatever.

Jerry

lynnl
04-26-2003, 05:39 PM
Jerry, did you follow what G A Ewan was suggesting above? If your chuck jaws will accomodate the 1" bolt, that oughta work.

How many do you have to do?

darryl
04-26-2003, 05:48 PM
I would just run them through the bandsaw, one nut becomes two. Maybe have a bolt threaded a few threads in on each side to hold the nut with. Grind the sharp tits off and yer done. What am I missing?

Joel
04-26-2003, 06:54 PM
Get a fairly long bolt. Cut the head off if it won't reach behind your jaws. Use one nut as a jam nut so the other nut won't spin. Face the nut to width with your carbide toolbit. You could make a simple mandrel if you wanted to, but it doesn't sound like you need to.

jfsmith
04-26-2003, 07:13 PM
I ordered a 5 inch 3 jawed chuck as recommended in the online article

http://www.mini-lathe.com/Mini_lathe/Reviews/Chuck_5x3/5x3.htm

I got it from http://www.use-enco.com/ it's item # 270-4074 for $60.95.

While I got the lathe I ordered a blank faceplate for such upgrades.

I thought about doing the bandsaw thing and making a bolt into an arbor, but this is my excuse for getting the bigger chuck.

So it will be Thursday or Friday getting here if they ship from Indiana, maybe sooner. I like new toys. :-&gt;&gt;&gt;&gt;

Jerry

lynnl
04-26-2003, 07:18 PM
There you go! That new chuck will pay for itself even before you get the package opened.

jfsmith
04-27-2003, 12:21 AM
So far, I have ordered the 5 " 3 jawed chuck, the dies to cut the thread on the arbor, the die holder, and a couple of other things. So this project has many new toys and tools in it, and I spent about hundred dollars so far on it.

I hope the project works out, but it will be fun to learn all of the processes to do this.

Jerry

jfsmith
04-29-2003, 05:35 PM
I got the chuck into day, and have laid out the mounting holes on the space faceplate I have. I did the first drilling. Later I will mill them, so I have slot there to adjust things with.

Jerry

jfsmith
04-30-2003, 09:24 PM
This is a hard nut to cut down, tools are sharp, things are doing what they are suppose to but this is tough steel.

Jerry