Lathe threading

Turning threads using mini-lathe

gears The selection of power feed on mini-lathe like Proma SM-300, SIEG C2 or similar is done by selection of gear setup. I have got 12 gears with the lathe (20-tooth 2pieces, 30, 35, 40-2pieces, 45, 50, 60-2pieces, 80-2pieces). From this collection is possible to set up number of gears. In the following table is possible to find gear setup for feed from 0,09mm/rotation to 3mm/rotation. In the table is also conversion for the imperial measure of pitch - TPI.
Table is calculated for the "METRIC" version of mini-lathe.

Pitch mm	TPI	A	B	C	D
0.09375	270.933	20	80	20	80
0.12500	203.200	20	80	20	60
0.12500	203.200	20	60	20	80
0.14063	180.622	30	80	20	80
0.14063	180.622	20	80	30	80
0.15000	169.333	20	50	20	80
0.15000	169.333	20	80	20	50
0.16406	154.819	35	80	20	80
0.16406	154.819	20	80	35	80
0.16667	152.400	20	60	20	60
0.18750	135.467	20	80	40	80
0.18750	135.467	20	80	30	60
0.18750	135.467	40	80	20	80
0.18750	135.467	30	80	20	60
0.18750	135.467	20	60	30	80
0.18750	135.467	30	60	20	80
0.20000	127.000	20	50	20	60
0.20000	127.000	20	60	20	50
0.21094	120.415	45	80	20	80
0.21094	120.415	20	80	45	80
0.21875	116.114	20	60	35	80
0.21875	116.114	35	80	20	60
0.21875	116.114	20	80	35	60
0.21875	116.114	35	60	20	80
0.22500	112.889	30	80	20	50
0.22500	112.889	30	50	20	80
0.22500	112.889	20	80	30	50
0.22500	112.889	20	50	30	80
0.23438	108.373	50	80	20	80
0.23438	108.373	20	80	50	80
0.24609	103.213	30	80	35	80
0.24609	103.213	35	80	30	80
0.25000	101.600	40	80	20	60
0.25000	101.600	20	60	40	80
0.25000	101.600	20	80	30	45
0.25000	101.600	40	60	20	80
0.25000	101.600	30	45	20	80
0.25000	101.600	20	80	40	60
0.25000	101.600	30	60	20	60
0.25000	101.600	20	60	30	60

TUS ITOS KUSIM

Turning threads using mini-lathe