INCH-8 THREADING SETUPS
For The KNAELL Threader For The
TAIG Lathe
Pulley Setups For Cutting Listed Threads-per-Inch (TPI) Using 20 TPI Leadscrew And 11 Tooth Pulley On Spindle (N1 Position). The INCH-8 Set Comprises 8 Pulleys of 10, 11, 14, 16, 20, 22, 24,& 36 Teeth.
-------- RH Threading -------- - LH Thd'g -
TPI N1 N2 N3 N4 B12 B34 N5 B12 B34
10 11 10 20 11 45 50 24 60 45
14 11 11 20 14 45 50 24 60 45
16 11 11 20 16 45 50 24 60 45
20 11 10 20 22 45 50 24 60 45
22 11 11 20 22 45 50 24 60 45
24 11 11 20 24 45 50 25 60 45*
25 11 10 16 22 45 50 24 60 45
28 11 14 20 22 45 50 24 60 45
30 11 11 16 24 45 50 22 60 45
32 11 16 20 22 45 50 24 60 45
35 11 14 16 22 45 50 20 60 45
36 11 11 20 36 45 60 24 60 50
40 11 11 10 20 45 50 16 60 45
44 11 11 10 22 45 50 16 60 45
45 11 11 16 36 50 60 22 60 50
48 11 22 20 24 45 50 16 60 50
50 11 20 16 22 45 50 14 60 50
56 11 14 10 22 45 50 16 60 50
60 11 22 16 24 45 50 14 60 50
64 11 16 10 22 45 50 14 60 50
72 11 22 20 36 45 50 24 60 50
80 11 20 10 22 50 45 14 60 50
90 11 22 16 36 45 50 20 60 50
96 11 22 10 24 50 45 14 60 50
144 11 22 10 36 45 50 20 60 50
Note:
N1, N2, N3,& N4 Pulleys the same for LH and RH Threading.
Pulleys are numbered consecutively through drive train and belt B12 couples N1 to N2; belt B34 couples N3 to N4.
Calculation: TPI = 20 * (N2*N4)/(11*N3).
*24TPI LH setup uses a METRIC-8 pulley at N5 and is tight setup. A 65 tooth B12 belt may be required.
*Make sure N5 setscrew does not interfere with N3 or B34.
B12 is belt length running between N1 and N2; Similarly for B34