STANDARD ROLLER CHAIN SPROCKET DIAMETERS
1 INCH PITCH - NO. 80
5/8 INCH DIAMETER ROLLER
No.
Teeth		 Outside
Diameter		 Pitch
Diameter		 Caliper
Diameter
9 3.348 2.924 2.254
10 3.678 3.236 2.611
11 4.006 3.550 2.888
12 4.332 3.864 3.239
13 4.657 4.179 3.523
14 4.981 4.494 3.869
15 5.304 4.810 4.185
16 5.627 5.126 4.501
17 5.949 5.442 4.794
18 6.271 5.759 5.134
19 6.593 6.076 5.430
20 6.914 6.392 5.767
21 7.235 6.710 6.066
22 7.555 7.027 6.402
23 7.876 7.344 6.702
24 8.196 7.661 7.036
25 8.516 7.979 7.338
26 8.836 8.296 7.671
27 9.156 8.614 7.974
28 9.475 8.931 8.306
29 9.795 9.249 8.611
30 10.114 9.567 8.942
31 10.434 9.884 9.274
32 10.753 10.202 9.577
33 10.073 10.520 9.883
34 11.392 10.838 10.213
35 11.711 11.156 10.520
36 12.030 11.471 10.849
37 12.349 11.792 11.156
38 12.668 12.110 11.485
39 12.987 12.428 11.792
40 13.306 12.746 12.121
41 13.625 13.064 12.429
42 13.944 13.382 12.757
43 14.263 13.700 13.065
44 14.582 14.018 13.393
45 14.901 14.336 13.702
46 15.219 14.654 14.029
47 15.538 14.972 14.338
48 15.857 15.290 14.665
49 16.176 15.608 14.975
50 16.495 15.926 15.301
51 16.813 16.244 15.611
52 17.132 16.562 15.937
53 17.451 16.880 16.248
54 17.769 17.198 16.573
55 18.088 17.516 16.884
56 18.407 17.835 17.210
57 18.725 18.153 17.521
58 19.044 18.471 17.846
59 19.363 18.789 18.157
60 19.681 19.107 18.482
61 20.000 19.426 18.794
62 20.318 19.744 19.119
63 20.637 20.062 19.431
64 20.956 20.380 19.755
65 21.274 20.698 20.067
66 21.593 21.016 20.391
67 21.911 21.335 20.704
68 22.230 21.653 21.028
69 22.548 21.971 21.340
70 22.867 22.289 21.664
71 23.185 22.607 21.977
72 23.504 22.926 22.301
73 23.822 23.244 22.613
74 24.141 23.562 22.937
75 24.459 23.880 23.250
76 24.778 24.198 23.573
77 25.096 24.517 23.887
78 25.415 24.835 24.210
79 25.733 25.153 24.523
80 26.052 25.471 24.846
81 26.370 25.790 25.160
82 26.689 26.108 25.483
83 27.007 26.426 25.796
84 27.326 26.744 26.119
85 27.644 27.062 26.433
86 27.962 27.381 26.756
87 28.281 27.699 27.069
88 28.599 28.017 27.392
89 28.918 28.335 27.706
90 29.236 28.654 28.026
91 29.555 28.972 28.343
92 29.873 29.290 28.665
93 30.192 29.608 28.979
94 30.510 29.927 29.302
95 30.828 30.245 29.616
96 31.147 30.563 29.938
97 31.465 30.822 30.252
98 31.784 31.200 30.575
99 32.102 31.518 30.889
100 32.421 31.836 31.211
101 32.739 32.154 31.526
102 33.057 32.473 31.848
103 33.376 32.791 32.162
104 33.694 33.109 32.484
105 34.013 33.428 32.799
106 34.331 33.746 33.121
107 34.649 34.064 33.435
108 34.968 34.382 33.757
109 35.286 34.701 34.072
110 35.605 35.019 34.394
111 35.923 35.337 34.709
112 36.241 35.655 35.030

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