Southbend South Bend SB1051 - Manual (Page 59)

For Machines Mfg. Since 5/11 13" x 40" Heavy 13 ® EVS Lathe
-57-
O P E R A T I O N
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 81).
2 7 ⁄
8
TPI
The thread dial is not used for 2 7 ⁄
8
threads
(see Figure 82). For this operation, you must
leave the half nut engaged until the turning is
complete.
Figure 81. Position for 1 ⁄
4
or 3 ⁄
4
fractional TPI.
Position
1 Only 2¼,2¾,
3¼,3¾
TPI
Figure 82. Half nut stays engaged for 2 7 ⁄
8
TPI.
2 7 ¼
8
Same as
Metric
Threads
Thread Dial
Not Used
The chip drawer catches swarf and metal
chips during operation. A screen in the bottom
prevents large chips from returning to the
reservoir with the run-off coolant, which could
cause damage to the pump.
The chip drawer slides open and is removable for
cleaning (see Figure 83).
Chip Drawer
Figure 83. Chip drawer.
The chip drawer is very heavy. Unless
removing the chip drawer for cleaning, do
not pull it out more than halfway; otherwise,
it could fall out and cause a crushing injury.
If removing the drawer for cleaning, get
assistance!