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Gear Pitch Conversion Table

Diametral Pitch

Circular Pitch

Module

0.3387

9.2764

75

0.3629

8.658

70

0.3908

8.0395

65

0.4233

7.4211

60

0.4618

6.8027

55

0.5

6.2832

50.8

0.508

6.1843

50

0.5644

5.5658

45

0.6048

5.1948

42

0.6513

4.8237

39

0.7056

4.4527

36

0.75

4.1888

33.867

0.7697

4.0816

33

0.7854

4

12.128

0.8467

3.7106

30

0.8976

3.5

12

0.9407

3.3395

27

1

3.1416

25.4

1.0472

3

11.622

1.0583

2.9684

24

1.1424

2.75

11.289

1.1545

2.7211

22

1.25

2.5133

20.32

1.2566

2.5

11.117

1.27

2.4737

20

1.3963

2.25

11

1.4111

2.2263

18

1.5

2.0944

16.933

1.5708

2

10.612

1.5875

1.979

16

1.6755

1.875

10.16

1.6933

1.8553

15

1.75

1.7952

14.514

1.7952

1.75

10

1.8143

1.7316

14

1.9333

1.625

9.236

1.9538

1.6079

13

2

1.5708

12.7

2.0944

1.5

9.096

2.1167

1.4842

12

2.1855

1.4375

9

2.25

1.3963

11.289

2.2848

1.375

8.59

Diametral Pitch

Circular Pitch

Module

2.3091

1.3605

11

2.3936

1.3125

8.467

2.5

1.2566

10.16

2.54

1.2369

10

2.75

1.1424

9.236

2.7925

1.125

8.085

2.8222

1.1132

9

2.9568

1.0625

8

3

1.0472

8.467

3.1416

1

7.58

3.175

0.9895

8

3.351

0.9375

7.257

3.5

0.8976

7.257

3.5904

0.875

7.074

3.6286

0.8658

7

3.8666

0.8125

7

3.9077

0.804

6.5

4

0.7854

6.35

4.1888

0.75

6.569

4.2333

0.7421

6

4.5

0.6981

5.644

4.5696

0.6875

6.5

4.6182

0.6803

5.5

4.71

0.667

6.35

5

0.6283

5.08

5.0266

0.625

6.064

5.08

0.6184

5

5.5851

0.5625

6

5.6444

0.5566

4.5

6

0.5236

4.233

6.2832

0.5

5.644

6.35

0.4947

4

6.7733

0.4638

3.75

7

0.4488

3.629

7.1808

0.4375

5.558

7.2571

0.4329

3.5

7.8154

0.402

3.25

7.854

0.4

5.5

8

0.3927

3.175

8.3776

0.375

5.393

8.4667

0.3711

3

9

0.3491

2.822

9.2364

0.3401

2.75

Diametral Pitch

Circular Pitch

Module

9.4342

0.333

5.08

10

0.3142

2.54

10.0531

0.3125

5.053

10.16

0.3092

2.5

10.9846

0.286

5

11

0.2856

2.309

11.2889

0.2783

2.25

12

0.2618

2.117

12.5664

0.25

4.548

12.7

0.2474

2

13

0.2417

1.954

14

0.2244

1.814

14.1514

0.222

4.5

14.5143

0.2164

1.75

15

0.2094

1.693

15.708

0.2

4.233

16

0.1964

1.588

16.7552

0.1875

4.043

16.9333

0.1855

1.5

17

0.1848

1.494

18

0.1745

1.411

18.812

0.167

4

19

0.1653

1.337

20

0.1571

1.27

20.32

0.1546

1.25

22

0.1428

1.155

24

0.1309

1.058

25.4

0.1237

1

26

0.1208

0.977

28

0.1122

0.907

28.2222

0.1113

0.9

30

0.1047

0.847

31.75

0.0989

0.8

32

0.0982

0.794

34

0.0924

0.747

36

0.0873

0.706

36.2857

0.0866

0.7

42.3333

0.0742

0.6

50.8

0.0618

0.5

63.5

0.0495

0.4

84.6667

0.0371

0.3

 

 

 

 

 

 


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