Filter
Top Products
23
13.0 Indexer positions
How to use the chart
The indexer is shown as viewed from the tailstock
end of the Lathe. Points A, B, C and D are the
holes in the head casting. The holes in the spindle
collar may be considered as numbered 1 through
12.
Example: You wish to rout 9 flutes on your spindle
blank. Locate the “9” in the “No. of Flutes” column;
each flute angle will be 40°. The index pin should
first be inserted into hole combination “A-1”. Make
your first flute at this position. Back off the index
pin and rotate the spindle until the index pin can be
inserted into hole combination “A-5”; this will be
followed by “A-9”. Succeeding flutes will be made
with the index pin in the B position: “B-2”, “B-6” and
so on.
Figure 36
No. of Flutes
360° divided by...
Angle Letter # Letter # Letter # Letter #
1 360.00 A 1
2 180.00 A 1,7
3 120.00 A 1,5,9
4 90.00 A 1,4,7,10
5 72.00 -----------------------
6 60.00 A 1,3,5,7,9,11
8 * 45.00 A 1,4,7,10 D 2,5,8,11
9 40.00 A 1,5,9 B 2,6,10 C 4,8,12
10 36.00 -----------------------
12 30.00 A 1 to 12
15 24.00 -----------------------
16 22.50 -----------------------
18 20.00 A 1,3,5,7,9,11 B 2,4,6,8,10,12 C 2,4,6,8,10,12
20 18.00 -----------------------
24 * 15.00 A 1 to 12 D 1 to 12
30 12.00 -----------------------
36 10.00 A 1 to 12 B 1 to 12 C 1 to 12
other interesting patterns....
18 20.00 A 1,3,5,7,9,11 B 1,3,5,7,9,11 C 1,3,5,7,9,11
Table 2
NOTE: A dashed line indicates that particular set of angles is not possible with the indexer.