RFQ Turning down Titanium

[vadimvc]

I have a Ti shaft which is currently 0.515 in in diameter (+/-.005) and 9.5 inches long. I need it turned down to 0.500 inches. Also, I need one edge cleaned up so its straight. One of them is fine, however one is slightly angled (just about .05 taken off)

Finally, I need a 1/4-20 thread 0.75 inches deep tapped on both sides of the shaft.

I'm not completely sure about the tolerance for the outside. It will have an object spinnig around it at about 7000 rpm which is mounted on ball bearings. I think it should be about +0/-.001 but I could be wrong.

If you need a blueprint I'll make one however this seems like a simple enough part.

[dkowalcz]

Mind if I just duplicate it in steel? 1045 TGP would be right on your diameter spec, and it's much stiffer and stronger then Ti. I can make it for $25 no sweat.

If you know what bearing you're using (the 6XXX number) then I can journal the ends for you to match. Usually this needs to be tenths accurate, though you can often "cheat" with loc-tite.

[vadimvc]

I will need this in titianium due to the weight difference, and weight in this application is critical. I'll check tonight about the bearing number and get back to you.

[vadimvc]

I'm not sure of the 6XXX number but its mcmaster number is 2934T13. I have not gotten any quotes thus far...

[dkowalcz]

Just looked it up - that's a 1/2" ID sleeve bearing, so .499-.500 is just fine for the shafting.

I'll let someone else quote it though, I'm a little overcommitted at present. Unless you can wait a few weeks?

[vadimvc]

This isn't urgent... maybe needed by second or so week of May. So go ahead and quote it.

[dkowalcz]

Fair enough, thanks for the consideration... $30 plus shipping ought to do it - contact me at "admin@dakeng.com".

[ErnieD]

OT. Has anyone ever used MFG.com for trying to get work to quote? I have a friend who has a shop and he is on hard times now. Work is sparse. I thought I would ask you guys.
For the most part I think that most of you guys are pretty knowledgable and know your stuff about prices etc. Any replys will be appreciated. Flaming is allowed but it will be graded.

Thanks,

ErnieD

[PBMW]

I have tried it.
It was a waste of my time and money
In my opinion, the people that post jobs there have no intention of awarding the job. Thye are using your experience and labor to cost their jobs, and/or to take that info to the shops that ARE doing the work as leverage for a lower price.
I normally win about 40% of the jobs I quote. I know how to get work. Been doing this for years. I have never won a contract from MFG Quote and I have never won one here either. This is not saying anything neg at all about this site. But it does speak to the folks that post jobs on this type of site.
You want work? Go pound the streets. Go build solid relations with other shops. My shop is in a small town. There are I believe 4 shops with CNC in the entire county and very little industry, yet I am going to pay cash for a new Mori CNC 4 axis lathe in a couple months. We are thriving, because we have built some solid relationships with other companies.

[dfry]

I started my shop about 4 months ago and priced MFGQUOTE.com to get work. They wanted $5,500.00 a year for machining and fabrication quoting. That is crazy and way too much overhead for me right now.

[vadimvc]

Request fulfilled

Thanks to all who quoted.