Limit Block - Grizzly G8689 Owner's Manual

Limit Block

The limit block can be set when you want to limit
the amount of head travel. Repeated hole drill-
ing of the same depth is a perfect use for this
feature.
To set the limit block:
1.
Determine the depth of cut.
2.
Move the head to that position, then lock in
place with the column lock.
3.
Loosen the lock handle and slide the limit
block so it sits tight against the bottom of the
head (see Figure 14).
Column Lock
Limit Block
Figure 14. Limit block in place.
4. Tighten in position.
Note: The limit block can lose its position after
repeated contact with the head. To limit this pos-
sibility make sure the head only makes gentle
contact with the limit block. Both the rapid and
micro downfeed controls can overpower the limit
block if excessive force is used.
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Table Travel
The mill table can be moved in the X and Y axis.
Longitudinal Feed:
The longitudinal feed or X axis, is moved by a
handwheel at the end of the table. The handwheel
will move the table in both directions side to side.
One complete revolution of the handwheel moves
the longitudinal feed 0.0625". There is also a scale
on the front of the table for use when a tight toler-
ance is not required. The longitudinal feed can be
locked in position by the two lever screws located
on the front of the table (see Figure 15).
Cross Feed:
The cross feed or Y axis, is moved with the
handwheel on the front of the table base. One
complete revolution of the handwheel moves the
cross slide 0.0625". The cross feed can be locked
into position by a lever screw, located on the right
side of the cross slide underneath the table (see
Figure 15).
Table Locks
Figure 15. Table locks.
G8689 Mini Mill (Mfg. 8/06+)