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Bill, Those gears that mesh with the tumbler gears are not keyed to the shaft. They are part of a progressive reduction as they go from the input end of the gearbox to the center. That tumbler selects

??? ??? You might also ask over? here https://www.practicalmachinist.com/forum/categories/south-bend-lathes.25/ Lots of South Bend knowledge over there animal

Hi group,Over the years now in then I need the use of my wide rangedouble tumber gear box for cutting screw threads. The problem is I do not have rotation to my lead screw in?E,F,G speeds only A -D

??? ??? Gotter done , nice job animal

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Like others before me, I found it difficult to find a steady rest for my Heavy 10. I found this nicely made one for a 9” SB that has a 5” bore size. With 5” to work with and being made out of

And this time with pictures...

Evening all, Please find attached 3 photos of a cover I recently knocked up for the purpose of keeping swarf out of the cross slide screw on the railway's 14.5" x 6' toolroom SB.? I have seen these

Have to be a member of farce book [email protected]> wrote:

Link belts used to be, and I assume still are, very stretchy indeed, when compared with a modern cut edge (and maybe notched) V belt, which have negligible stretch, and indeed, shrink in length if

Wasn't somebody here looking for this? https://www.facebook.com/marketplace/item/3133944583578155/?mibextid=dXMIcH

Hows your spindle bearings ? Have you done the test by using a rod through the spindle hole & lifting the rod to see what your clearances are ? Whats your finished product look like ? Like everyone

.050 should be obtainable on a SB9. If the belt is slipping, you should try to increase the tension first. Link belts are usually not a problem. Disconnect the belts and confirm that the spindle

Do you have the setup with the V belt pulley on the motor and a large flat pulley on the countershaft? Looks strange but this was standard. I'm a great fan of the link belts for V-belt pulleys. I've

Can you share some photos of your belt setup? In particular, the area with the bearing that's throwing oil. I had similar problems with belt slipping, and just had to tighten it up; but I haven't had

Wow. Lots of questions. One fact is really obvious. My machine operator pair should take cuts 10x deeper than I am. The lathe head and all associated gearing is good. It was recently rebuilt and all

If the spindle is slowing or stopping either: 1. the motor is not powerful enough (1/4 should do better, 1/2 is plenty)? 2. the belt is slipping on a pulley or? 3. a pulley is slipping on a shaft(

What sort of carbide are you using? I've never had good luck with the 0 degree rake brazed carbide. I hear that it wants to run really fast.

0.002” is way too low. I run 0.015”-0.020” at a minimum for the hardest materials. Material? Speeds? What size is your motor? Brandon

I regularly take .050 on my 9A Two variables to look at - feeds and speeds. Try feeding slower. Make sure your RPM is right for the diameter - your SFPM (surface feet per minute). This can make a