Jet Tools JWL-1642EVS-2 operating instructions Indexer Positions, How to use the chart

Indexer 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.

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