J JorgensenSteam Guest Sep 12, 2010 #1 I started making a threaded spindle to allow his lathe chucks and backplates to be attached to the large rotary table, for use on the mill.
I started making a threaded spindle to allow his lathe chucks and backplates to be attached to the large rotary table, for use on the mill.
S shred Well-Known Member Joined Jul 19, 2007 Messages 1,949 Reaction score 7 Sep 12, 2010 #2 Seems unlikely it would be a metric thread, but I guess it could be. If it's a 12x37 lathe, the current Grizzly one has a 2-1/4x8 TPI thread on it.
Seems unlikely it would be a metric thread, but I guess it could be. If it's a 12x37 lathe, the current Grizzly one has a 2-1/4x8 TPI thread on it.
S shred Well-Known Member Joined Jul 19, 2007 Messages 1,949 Reaction score 7 Sep 12, 2010 #3 As a quick check, you could try holding a 3/8-16 bolt (or 16 TPI thread gauge) up to the spindle threads and seeing if the notches and valleys line up with every other one.
As a quick check, you could try holding a 3/8-16 bolt (or 16 TPI thread gauge) up to the spindle threads and seeing if the notches and valleys line up with every other one.
Maryak Well-Known Member Joined Sep 12, 2008 Messages 4,990 Reaction score 77 Sep 13, 2010 #4 JorgensenSteam said: I tried measuring the threads per inch, and it is close to 8 TPI, but I cannot verify it exactly. Pat J Click to expand... Pat, Close to 8 tpi is 3mm pitch,(8.46667 tpi), a typical metric leadscrew pitch. Best Regards Bob
JorgensenSteam said: I tried measuring the threads per inch, and it is close to 8 TPI, but I cannot verify it exactly. Pat J Click to expand... Pat, Close to 8 tpi is 3mm pitch,(8.46667 tpi), a typical metric leadscrew pitch. Best Regards Bob
