I need to move the point of the dead center in the lathe spindle nose toward tailstock about 2 inches. My 5 MT dead center is too far down inside the thick 4-jaw Chuck I’m using, to allow use of any dog. So being cheap and lazy, the quick-fix that should work is to drop a 5MT to 4 MT sleeve in the 5 MT spindle-nose bushing, then drop a 4 MT to 3 MT adapter sleeve in that, and use a 3 MT dead center for my planned taper turning between centers. There’s a story behind why the 5 MT bushing sits so far down inside the spindle but I didn’t plan on going there since the thread would get too long. See any issues with my plan? I figure as long as there’s no runout at the point of the dead center, there shouldn’t be a problem.
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Any problem with nesting multiple MT adapter sleeves?
- Thread starter Cannonmn
- Start date
- Replies 10
- Views 1,605
carlherrnstein
Aluminum
- Joined
- Apr 18, 2015
- Location
- Ross County, Ohio
Should be reasonably ok. Check the point you might have to clock and indicate a few times if the sleeves are dinged up.
gwilson
Diamond
- Joined
- Oct 1, 2006
- Location
- williamsburg va
It depends upon how concentric your adapters are. Any time you "add" anything like you are contemplating,you are risking potential trouble,and loss of rigidity.
Gordon Heaton
Titanium
- Joined
- Feb 19, 2007
- Location
- St. George, Utah
The biggest negative in my experience is they can be real hard to separate!
dana gear
Hot Rolled
- Joined
- Feb 27, 2013
- Location
- Northern califorina, usa
Yes ,just watch out if your using cheap import adapters in a stack will almost always be out of concentric.
Thx for info, so I might use the stack for short/light items only, and “dedicate” those sleeves in the stack so I wouldn’t have to pull it apart if it resisted too much. Looks like gbent doesn’t rely on a Morse taper center mount at all, just holds his special center in the chuck, so that’s an alternative I hadn’t given too much thought yet.
i also use the "special center" but im too lazy to recut it most of the time. however by rotating it in the chuck i usually can bring it on center. the same appies to the stacked up addapters. if your lucky you get zero tir. actually i have a mt5 to mt3 that is too good. no point in rotating.
This is the way I do it also. Grade 8 (12.9 european) bolt will also work nicelyn instead ”prehard” steel.
howieranger
Aluminum
- Joined
- Jan 24, 2007
- Location
- Mountain Home AR.
As others have said using a center with a shoulder that you turn in the chuck will remain on center unless you move it or have some sort of a boo boo that damages it. With the shoulder the part heating will not drive the center back into the chuck but using a stack of sleeves will get them tighter and could aggravate any runout you have with the stackup.
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