What Bronze Do I Need

[JR49]

Are you kidding, Mark, You "pay it forward" every time you post a thread of something you are building. I have learned a lot from watching your builds, and I thank you very much. Happy machining, JR49

 

[Tony Wells]

Happy to oblige, Mark. Think nothing of it.

 

[dgehricke]

Mark,
Just a thought but if your bearing is square why not bore it out and put in a round insert and a little dab of silver solder to hold it all together.?
Heres a site for the screw and the insert < http://rempco.com/threaded-products/precision-leadscrews/acme-thread/ >you could also go with Delrin/Delron Plastic
< http://www.professionalplastics.com/DELRINSHEET-ROD >
Is this for your Burke ?
Regards
Wally G
dgehricke

 

[Mark_f]

The lead screw nut for my Burke table is flat on the bottom and sides and rounded on top. The cavity is basically sort of square. I will drill and acme thread the piece and then mill the proper shape.

While the insert is not a bad idea, it is easier to make the nut from a single piece. If you saw the write up on the saddle nut I made for the Burke, it was sort of done like that. I did not have a large enough chunk of bronze so I made the base from steel and attached the bronze nut to it. The method is an excellent alternative if you lack a piece of the correct size. The nut for my knee on the Burke was also done this way.

I have read many articles about making a lead screw nut from delrin, but it is my opinion that is a wasted effort because it will work but it won't hold up as well as the bronze. Some people will argue that point.

 

[dgehricke]

Mark,
I have a spare Burke #4 for parts and the table lead screw and the bronze nut are good. the lead screw does have a problem where the handle mounts it needs to be repaired.Of interested let me know I will call you or email you at your email address. This machine has a 16 " table. I know what the lead screw nut is I replaced the one on my #4 the new one from DC Morrison was $ 70.00 plus shipping. I salvaged the old part and I ordered a round nut from this place < http://www.roton.com > and I put it away for a later project …well I guess I lost it or misplaced it, someday it will turn up.
let me know if you want the nut or anything else.
Regards
dgehricke

 

[Mark_f]

Mark,
I have a spare Burke #4 for parts and the table lead screw and the bronze nut are good. the lead screw does have a problem where the handle mounts it needs to be repaired.Of interested let me know I will call you or email you at your email address. This machine has a 16 " table. I know what the lead screw nut is I replaced the one on my #4 the new one from DC Morrison was $ 70.00 plus shipping. I salvaged the old part and I ordered a round nut from this place < http://www.roton.com > and I put it away for a later project …well I guess I lost it or misplaced it, someday it will turn up.
let me know if you want the nut or anything else.
Regards
dgehricke

I sent you a PM

 

[Bill Gruby]

I have a box full of bronze bushing Mark. Tell me OD, ID and lengths you need.

"Billy G"

 

[Smithdoor]

If you looking for low price
Try using bronze out a transmission [Truck Road Ranger ]
It is around 1 1/4" an 4 or 5 long

Dave

I need to make some bearings and a lead screw nut. I am trying to figure out what kind of bronze is best to use. Any ideas?