Mounting Tailstock - Grizzly T25937 Owner's Manual

Mounting Tailstock

The Model T25937 comes with a tailstock for
the rotary table. The tailstock supports larger
workpieces when the rotary table is in the verti-
cal position, while maintaining a high level of
accuracy.
To install tailstock onto mill table:
1.
Ensure chuck is installed on rotary table, then
secure rotary table to mill table in vertical
position.
2.
Install tailstock on mill table so dead center of
tailstock is roughly in line with center of rotary
table.
3.
Mount center-drilled, parallel workpiece
between chuck and tailstock (see Figure 31).
Note : Workpiece should be checked for par-
allelism and concentricity.
4.
Mount a dial indicator in mill spindle and
indicate off of a horizontal center line of
workpiece near tailstock (see Figure 31).
Figure 31. Determining offset of surface.
Model T25937 (Mfd. Since 3/16)
5. Move table along X-axis and indicate hori-
zontal centerline of workpiece near rotary
table. If there is an offset, adjust position of
tailstock half the distance of the offset and
recheck (see Figure 32).
Figure 32. Adjusting tailstock for offset.
6.
Continue to make this adjustment until zero
movement is indicated all along the travel.
7.
Tighten tailstock mounting bolts and recheck.
To align Z axis:
1. Repeat Steps 5 –7 from above, only this time
indicate off vertical center line of workpiece.
2.
Make your adjustments by slightly loosen-
ing adjustment bolts and raising or lowering
tailstock dead center in appropriate direction
(see Figure 33).
Adjustment Bolts
Figure 33. Vertical tailstock adjustment.
3.
Tighten bolts and recheck.
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