THESE CHARTS ARE PROVIDED AS A REFERENCE ONLY AND DO NOT REFLECT SPROCKETS IN STOCK

STANDARD ROLLER CHAIN SPROCKET DIAMETERS
1-1/4 - INCH PITCH - NO. 100 CHAIN
3/4 INCH DIAMETER OF ROLLER

No.
Teeth
Outside
Diameter
Pitch
Diameter
Caliper
Diameter
6 2.915 2.500 1.750
7 3.345 2.881 2.059
8 3.768 3.266 2.516
9 4.185 3.655 2.849
10 4.598 4.045 3.295
11 5.008 4.438 3.639
12 5.415 4.830 4.080
13 5.821 5.224 4.435
14 6.226 5.618 4.868
15 6.630 6.013 5.229
16 7.034 6.408 5.658
17 7.436 6.803 6.024
18 7.839 7.199 6.449
19 8.241 7.595 6.819
20 8.643 7.990 7.240
21 9.044 8.388 7.613
22 9.444 8.784 8.034
23 9.845 9.180 8.409
24 10.245 9.576 8.827
25 10.645 9.974 9.204
26 11.045 10.370 9.620
27 11.445 10.768 9.999
28 11.844 11.164 10.414
29 12.244 11.561 10.794
30 12.643 11.959 11.209
31 13.043 12.355 11.590
32 13.441 12.753 12.003
33 13.841 13.150 12.385
34 14.240 13.548 12.798
35 14.639 13.945 13.181
36 15.038 14.343 13.593
37 15.436 14.740 13.976
38 15.835 15.138 14.388
39 16.234 15.535 14.772
40 16.633 15.933 15.183
41 17.031 16.330 15.567
42 17.430 16.728 15.978
43 17.829 17.125 16.363
44 18.228 17.523 16.773
45 18.626 17.920 17.159
46 19.024 18.318 17.568
47 19.423 18.715 17.954
48 19.821 19.113 18.363
49 20.220 19.510 18.750
50 20.619 19.908 19.158
51 21.016 20.305 19.546
52 21.415 20.703 19.953
53 21.814 21.100 20.341
54 22.211 21.498 20.748
55 22.610 21.895 21.137
56 23.009 22.294 21.544
57 23.406 22.691 21.932
58 23.805 23.089 22.339
59 24.204 23.486 22.728
60 24.601 23.884 23.134
61 25.000 24.283 23.524
62 25.398 24.680 23.930
63 25.796 25.078 24.320
64 26.195 25.475 24.725
65 26.593 25.873 25.115
66 26.991 26.270 25.520
67 27.389 26.669 25.911
68 27.788 27.066 26.316
69 28.185 27.464 26.707
70 28.584 27.861 27.111
71 28.981 28.259 27.502
72 29.380 28.658 27.908
73 29.778 29.055 28.298
74 30.176 29.453 28.703
75 30.574 29.850 29.094
76 30.973 30.248 29.498
77 31.370 30.646 29.890
78 31.769 31.044 30.294
79 32.166 31.441 30.685
80 32.565 31.839 31.089
81 32.963 32.238 31.481
82 33.361 32.635 31.885
83 33.759 33.033 32.277
84 34.158 33.430 32.680
85 34.555 33.828 33.072
86 34.953 34.226 33.476
87 35.351 34.624 33.868
88 35.749 35.134 34.384
89 36.148 35.419 34.664
90 36.545 35.818 35.068
91 36.944 36.215 35.460
92 37.341 36.613 35.863
93 37.740 37.010 36.255
94 38.138 37.409 36.659
95 38.535 37.806 37.051
96 38.934 38.204 37.454

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