Removing Center from Spindle
To remove the sleeve and center from the spindle, insert a piece of round bar stock or similar tool through the outboard end (on the left side of the headstock). Have another person hold onto the sleeve and center with a gloved hand or shop rag, then tap the sleeve loose.
Mounting Center in Tailstock
Either a
Dead Center
Figure 53. Example photo of using a carbide- tipped dead center installed in the tailstock.
To avoid premature wear of the dead center or damage to the workpiece, use low spindle speeds and keep the tip of the dead center mounted in the tailstock well lubricated.
To mount a center in the tailstock:
1.DISCONNECT LATHE FROM POWER!
2.thoroughly clean and dry the tapered mating surfaces of the tailstock quill bore and the center, making sure that no lint or oil remains on the tapers.
3.Use the quill handwheel to feed the quill out from the casting approximately 1".
Note: Do not extend the quill more than 2" or stability and accuracy will be reduced.
4.insert the center into the tailstock quill.
5.seat the center firmly into the quill during workpiece installation by rotating the quill handwheel clockwise to apply pressure with the center engaged in the center hole in the workpiece.
Note: Only apply enough pressure with the tailstock quill to securely mount the workpiece between centers. Avoid overtightening the center against the workpiece, or it may become difficult to remove later, and it will result in excessive friction and heat, which may damage the workpiece and center.
Removing Center from Tailstock
To remove the center from the quill, hold onto it with a gloved hand or shop rag, then rotate the quill handwheel counterclockwise to draw the quill back into the casting until the center releases.
If the center does not come loose by retracting the quill, extend the quill to expose the slot shown in Figure 54, then use a drift key to remove the center.
Drift Key Slot
Figure 54. Drift key slot in the side of the quill.
Model G0740 (Mfg. Since 11/12) |
