Note: The marks on the offset indicator are arbi- trary. For a precise offset, use a dial indicator to check quill movement while adjusting the screws.
Adjustment |
Set Screw (1 of 2) |
Offset |
Indicator |
Figure 30. Left offset adjustment. |
|
Tools Needed | Qty |
Hex Wrench 4mm | 1 |
To offset the tailstock: |
|
1.Loosen tailstock lock to release clamping pressure on top and bottom castings.
2.Rotate adjustment set screws in opposite directions for desired offset (see Figure below).
Aligning Tailstock to Spindle Centerline
This is an essential adjustment that should be ver- ified or performed each time the tailstock is used to turn concentric workpieces between centers or immediately after offsetting the tailstock when turning a taper. If the tailstock is not aligned with the spindle centerline when it is supposed to be, turning results will be inaccurate along the length of the workpiece.
Items Needed | Qty |
Hex Wrench 4mm | 1 |
Round Stock 2" x 6" | 2 |
To align the tailstock to the spindle centerline:
1.Center drill both ends of one piece of round stock, then set it aside for use in Step 5.
2.Use the other piece of round stock to make a dead center, and turn it to a 60° point, as illustrated in the Figure below.
Turn | Turn | Turn | Turn |
CCW | CW | CW | CCW |
Figure 31. Example of set screw adjustment in
relation to tailstock movement.
3.Tighten tailstock lock to secure the offset.
Figure 32. Turning a dead center.
Model G0765 (Mfd. Since 12/13) |