Grizzly G0776 Owner's Manual page 58

Apron Threading Controls
The half nut lever engages the carriage with the
leadscrew, which moves the carriage and cutting
tool along the length of the workpiece for thread-
ing operations (see Figure 81).
Important: Make sure the feed selection lever is
in the disengaged position before attempting to
engage the half nut.
Feed
Selection
Lever
Carriage
Disengaged
Cross Slide
Feed Selection
Lever
Figure 81. Apron threading controls.
-56-
Half Nut
Lever
Disengaged
Halfnut
Lever
Engaged
Thread Dial
Tools Needed
Hex Wrench 5mm .............................................. 1
The numbers on the thread dial are used with the
thread dial chart to show when to engage the half
nut during inch threading. Loosen the cap screw
on the thread dial (see Figure 82), pivot the gear
teeth so they mesh with the leadscrew threads,
then re-tighten the cap screw.
Note: The thread dial is not used for metric
threading or pitch turning. You must leave the half
nut engaged from the beginning until the turning
is complete for this type of operation.
Cap Screw
Dial Gear
Figure 82. Thread dial engaged.
When threading, we recommend using slow-
est speed possible and avoiding deep cuts,
so you are able to disengage half nut when
required and prevent an apron crash!
When the first thread cutting pass is complete,
the operator disengages the carriage from the
leadscrew using the half nut lever. The operator
returns the carriage for the next pass and re-
engages the half nut using the same thread dial
setting to resume the cut in the previous pass.
Model G0776 (Mfd. Since 7/14)
Qty
Lead Screw