Jet Tools JWL-1440VS operating instructions Indexer Positions, How to use the chart

15.0Indexer Positions

How to use the chart

A diagram of the indexer is shown at right, as viewed from the tailstock end of the Lathe. Points A, B and C 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-3”, “B-7” and so on

No. of Flutes
360° divided by...	Angle		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
9	40.00	A	1,5,9		B	3,7,11		C	1,5,9
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	1,3,5,7,9,11		C	1,3,5,7,9,11
20	18.00		-----------------------
24*	15.00	A	1 to 12
30	12.00		-----------------------
36	10.00	A	1 to 12		B	1 to 12		C	1 to 12
other interesting patterns....
9	------	A	1,5,9		B	1,5,9		C	1,5,9

NOTE: A dashed line indicates that particular set of angles is not possible with the indexer.

*For 8 or 24 flutes, perform the first sequence, then rotate the workpiece by hand to the needed position and repeat the same sequence.

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