Lathe User Manual



        
Figure 56

TPI
in
1 2 3 4 5 6 7 8
40
40
127
120
A
B
A
A
B
C
D
C
D
C
D
E
F
E
F
4 4
1
⁄2
5 6 75
1
⁄2
5
3
⁄4
6
1
⁄2
8 9 10 11 11
1
⁄2 12 13 14
16 18 20 22 23 24 26 28
32 36 40 44 46 48 52 56
64 72 80 88 92 96 104 112
.0294 .0261 .0235 .0214 .0205 .0196 .0181 .0168
.0147 .0131 .0117 .0107 .0102 .0098 .0090 .0084
.0073 .0065 .0058 .0053 .0051 .0049 .0045 .0042
.0042 .0038 .0034 .0031 .0030 .0028 .0026 .0024
.0021 .0019 .0017 .0016 .0015 .0014 .0013 .0012
.0103 .0091 .0082 .0075 .0072 .0069 .0063 .0059
.0051 .0045 .0041 .0036 .0036 .0035 .0031 .0030
.0025 .0023 .0020 .0019 .0018 .0017 .0015 .0015
.0014 .0013 .0011 .0010 .0009 .0009 .0008 .0008
.0007 .0007 .0006 .0005 .0005 .0004 .0004 .0004
25
50
127
120
40
32
120
127
40
40
120
127
30
40
120
127
MM
E
C
A
B
A
B
1 3 6 3 1 2 3
7.5 6 5 4.8 4.5 4 3.6
3.75 3 2.5 2.4 2.25 2 1.8
1.5 1.25 1.2 1 0.9
0.75 0.6 0.5 0.45
Figure 56.
Example A:
          


1. 

2.        

 Note: The IPR in the top triangles are for
longitudinal movement of the carriage using
the leadscrew, and in the bottom triangles for
longitudinal or cross feed using the feed rod.
3. 
 A         
Setting Feed Rate Controls Page 43

 Note: You may need to rock the spindle,
leadscrew, or feed rod back-and-forth by
hand to get the gears to properly engage.
4. 
D
5. 
3
6.        

Quick Change
Gears Page 44
Example B:


1. 
2. 
A
3. 
C
4. 
4
5.        


 Note: Refer to Threading on Page 46 for
further instructions on using your lathe to cut
threads.




1. A

2. E

3. 6

4.        

 Note: For metric threading, the top quick
change gear meshes with the outer 127T
gear and the bottom gear meshes with the
inner 120T gear.