Hi,
I'm working on this old Takisawa lathe with a SMW hydraulic 3-jaw chuck. After lots of indicating here and there I concluded that it's the jaws that aren't holding the workpiece straight.
There's something quirky with this chuck because in order for the workpiece to be relatively centered, one of the jaws has to be one notch off compared to the other two, otherwise the piece is noticeably off-center.
On top of that, the worpiece tilts to one side, enough to max out the dial indicator, like over 45thou.
I'm not sure if replacing the moving parts would correct this.
I'm working on this old Takisawa lathe with a SMW hydraulic 3-jaw chuck. After lots of indicating here and there I concluded that it's the jaws that aren't holding the workpiece straight.
There's something quirky with this chuck because in order for the workpiece to be relatively centered, one of the jaws has to be one notch off compared to the other two, otherwise the piece is noticeably off-center.
On top of that, the worpiece tilts to one side, enough to max out the dial indicator, like over 45thou.
I'm not sure if replacing the moving parts would correct this.