Azusa: #219 Sprocket Data

2010

When Azusa Engineering first began producing #219 sprockets, we found no published dimensional data tables with the precision we required for manufacturing. Using ANSI B29.1 Standard, Azusa derived the applicable formulas and generated the required #219 sprocket data. As a service to karting, we have summarized this hard-to-find data in the table below.

  • Nominal Outside Diameter: The dimension most published as the “OD.”
  • Maximum Outside Diameter: The precise diameter of a sprocket hobbed to form pointed teeth.
  • Pitch Diameter: The optimal contact point of the chain roller on the sprocket tooth and is used as a basis for many other dimensional calculations.
  • Caliper Diameter: measured from the bottom of one tooth to the bottom of the opposing tooth 180 degrees away. For an even-toothed sprocket, this is known as the “bottom diameter.” For an odd-toothed sprocket, the caliper diameter is measured between the bottoms of the two tooth spaces most nearly opposite each other.
TEETH OD NOMINAL OD MAXIMUM PITCH DIAMETER CALIPER DIAMETER
8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

43

44

45

46

47

48

49

50

51

52

53

54

55

56

57

58

59

60

61

62

63

64

65

66

67

68

69

70

71

72

73

74

75

76

77

78

79

80

81

82

83

84

85

86

87

88

89

90

91

92

93

94

95

96

97

98

99

100

101

102

103

104

105

0.923

1.025

1.126

1.226

1.326

1.425

1.525

1.624

1.722

1.821

1.919

2.018

2.116

2.214

2.312

2.410

2.508

2.606

2.704

2.802

2.900

2.998

3.096

3.193

3.291

3.389

3.487

3.584

3.682

3.780

3.877

3.975

4.072

4.170

4.268

4.365

4.463

4.560

4.658

4.756

4.853

4.951

5.048

5.146

5.243

5.341

5.438

5.536

5.634

5.731

5.829

5.926

6.024

6.121

6.219

6.316

6.414

6.511

6.609

6.706

6.804

6.901

6.999

7.096

7.194

7.291

7.389

7.486

7.583

7.681

7.778

7.876

7.973

8.071

8.168

8.266

8.363

8.461

8.558

8.656

8.753

8.851

8.948

9.046

9.143

9.240

9.338

9.435

9.533

9.630

9.728

9.825

9.923

10.020

10.118

10.215

10.312

10.410

0.979

1.079

1.177

1.276

1.374

1.472

1.570

1.667

1.765

1.863

1.960

2.058

2.155

2.253

2.350

2.448

2.545

2.643

2.740

2.838

2.935

3.033

3.130

3.228

3.325

3.422

3.520

3.617

3.715

3.812

3.910

4.007

4.104

4.202

4.299

4.397

4.494

4.592

4.689

4.786

4.884

4.981

5.079

5.176

5.273

5.371

5.468

5.566

5.663

5.761

5.858

5.955

6.053

6.150

6.248

6.345

6.443

6.540

6.637

6.735

6.832

6.930

7.027

7.124

7.222

7.319

7.417

7.514

7.612

7.709

7.806

7.904

8.001

8.099

8.196

8.293

8.391

8.488

8.586

8.683

8.781

8.878

8.975

9.073

9.170

9.268

9.365

9.463

9.560

9.657

9.755

9.852

9.950

10.047

10.144

10.242

10.339

10.437

0.800

0.895

0.990

1.086

1.183

1.279

1.375

1.472

1.569

1.666

1.763

1.859

1.956

2.054

2.151

2.248

2.345

2.442

2.539

2.636

2.734

2.831

2.928

3.025

3.123

3.220

3.317

3.414

3.512

3.609

3.706

3.804

3.901

3.998

4.096

4.193

4.290

4.388

4.485

4.582

4.680

4.777

4.874

4.972

5.069

5.166

5.264

5.361

5.458

5.556

5.653

5.751

5.848

5.945

6.043

6.140

6.238

6.335

6.432

6.530

6.627

6.724

6.822

6.919

7.017

7.114

7.211

7.309

7.406

7.504

7.601

7.698

7.796

7.893

7.991

8.088

8.185

8.283

8.380

8.478

8.575

8.672

8.770

8.867

8.965

9.062

9.159

9.257

9.354

9.452

9.549

9.646

9.744

9.841

9.939

10.036

10.133

10.231

0.619

0.701

0.810

0.895

1.002

1.089

1.195

1.283

1.388

1.478

1.582

1.672

1.776

1.867

1.970

2.062

2.164

2.256

2.358

2.451

2.553

2.646

2.747

2.841

2.942

3.035

3.136

3.230

3.331

3.425

3.526

3.620

3.720

3.815

3.915

4.009

4.110

4.204

4.304

4.399

4.499

4.594

4.694

4.789

4.888

4.983

5.083

5.178

5.278

5.373

5.473

5.568

5.667

5.763

5.862

5.958

6.057

6.152

6.252

6.347

6.446

6.542

6.641

6.737

6.836

6.932

7.031

7.126

7.225

7.321

7.420

7.516

7.615

7.711

7.810

7.906

8.005

8.101

8.199

8.295

8.394

8.490

8.589

8.685

8.784

8.880

8.979

9.075

9.173

9.270

9.368

9.464

9.563

9.659

9.758

9.854

9.953

10.049

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