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).
TPI
2¼,2¾,3¼,3¾ Position 1 Only
Figure 87. Position for 1⁄4 or 3⁄4 fractional TPI.
27⁄8 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.
27⁄8 | Same as | Thread Dial |
| Metric | |
| Not Used | |
| Threads | |
|
| |
|
|
|
Figure 88. Half nut stays engaged for 2⁜7⁄8 TPI.
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
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!
Model G0740 (Mfg. Since 11/12)
