33
Metric Threads
–
Right Hand
Pitch
A
B
C
D
0.25
30
120
60
120
0.3
30
100
60
120
0.35
35
100
60
120
0.4
40
100
60
120
0.45
45
100
60
120
0.5
30
80
Any
120
0.6
30
100
Any
100
0.7
50
100
70
100
0.75
45
80
Any
120
0.8
50
100
80
100
1
50
80
Any
100
1.25
50
100
Any
80
1.5
45
100
Any
60
1.75
49
120
Any
56
2
50
120
Any
50
2.5
50
120
Any
40
3
50
100
120
40
3.5
49
40
100
70
4
35
30
120
70
4.5
45
30
120
80
5
50
30
120
80
Metric Threads
–
Left Hand
Pitch
A
B
C
D
0.25
60
120
30
120
0.3
30
100
60
120
0.35
35
100
60
120
0.4
40
100
60
120
0.45
45
100
60
120
0.5
30
80
Any
120
0.6
30
100
Any
100
0.7
50
100
70
100
0.75
45
80
Any
120
0.8
50
100
80
100
1
50
80
Any
100
1.25
50
100
Any
80
1.5
45
100
Any
60
1.75
49
120
Any
56
2
50
120
Any
50
2.5
50
120
Any
40
3
50
100
120
40
3.5
49
40
100
70
4
35
30
120
70
4.5
45
30
120
80
5
50
30
120
80
Making Left Hand Threads
You can make left hand threads with this lathe by changing one gear. Move the driver gear from
the idler shaft to the drive shaft and also swap the spacer.
Gears set for right hand threads
Gears set for left hand threads
Tool Bit
For threading, the tool bit is ground to the profile of the thread. For most threads, this is a point
with a 60° included angle. The front of the tool should have about 10° of relief. No back rake is
Summary of Contents for HiTorque 7500
Page 40: ...40 Parts Diagram 7500 Model 7500 drawing 1...
Page 41: ...41 Model 7500 drawing 2...
Page 42: ...42 Parts Diagram 7550 Model 7550 drawing 1...
Page 43: ...43 Model 7550 drawing 2...
Page 47: ...47 Wiring Diagram...
