-60-
Model G0740 (Mfg. Since 11/12)
1
⁄4 or
3
⁄4 Fractional TPI
For TPI that have a
1
⁄4 or
3
⁄4 fraction, use position
1 on the thread dial (see Figure 87).
2
7
⁄8 TPI
The thread dial is not used for 2
7
⁄8 or metric
threading, or diametral and modular pitches (see
Figure 88). The half nut must stay engaged with
the leadscrew throughout the entire threading
operation.
Figure 87. Position for
1
⁄4 or
3
⁄4 fractional TPI.
Position
1 Only
2¼,2¾,3¼,3¾
TPI
Figure 88. Half nut stays engaged for 2
7
⁄8 TPI.
Same as
Metric
Threads
2
7
⁄
8
Thread Dial
Not Used
Chip Drawer
The chip drawer catches swarf and metal chips
during the machining process. It contains a
screen that keeps the large chips from returning
to the reservoir with the run-off coolant—this pre-
vents the chips causing pump damage.
Also, it slides open and is removable for cleaning
(see Figure 89).
Figure 89. Chip drawer.
The chip drawer is very heavy. Unless
removing the chip drawer for cleaning, do
not pull it out more than halfway to prevent
it falling and causing impact injuries. If
removing the drawer for cleaning, get
assistance!
