Grizzly G9249 Owner's Manual page 43

thread charts
8.
the thread dial is unnecessary for cutting
metric threads. leave the half nut engaged
until the threads are complete.
9. set the tool tip perpendicular to the workpiece,
center it vertically, and line up the tool for the
initial cut.
NOTICE
DO NOT engage the half-nut when the spin-
dle speed is over 200 RPM. Disregarding this
notice may cause damage to the leadscrew
or carriage components.
10. turn ON the spindle and engage the half
nut according to the thread dial to cut your
threads.
g9249 12" x 37" Belt drive gap Bed lathe
mm
A
B
C
D
E
127
127
FEEDING TABLE
figure 60. Metric and additional inch thread
127
1 2
A
1 2
B
C
D
E
figure 61. inch thread chart.
METRIC THREAD TABLE
127 40 127
120 120
40
1 4 6 1
6 4.8 4 7.5
3 2.4 2 3.75
1.5 1.2 1
0.75 0.6 0.5
0.3 0.25
INCH THREAD TABLE
A B
T.P.I.
32
1 / 11 /
3 1
4 2
46
32
3 / 7 /
3 1
4 2
30
chart.
1 2 3 4 5 6 7 8
40
.42 .37 .35 .33
D
.0165 .0146 .0138 .0131 .0120 .0110 .0101 .0094
.210 .185 .175 .165
E
40
.0082 .0073 .0069 .0065 .0060 .0055 .0050 .0047
3 4 5
3 4 1 2
1
2
30
40 127
120
32 32
6 1 4
5 4.5
2.5 2.25 1.8
1.25 0.9
0.45
C D E
23 46 92
15 30 60
mm
/
inch
.30 .28 .26 .24
.150 .140 .130 .120
6 7 8
1 2
-41-