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

STANDARD ROLLER CHAIN SPROCKET DIAMETERS
1/4 INCH PITCH - NO. 25
.130-INCH DIAMETER ROLLER

No.
Teeth
Outside
Diameter
Pitch
Diameter
Caliper
Diameter
8 0.754 0.653 0.523
9 0.837 0.731 0.591
10 0.919 0.809 0.679
11 1.002 0.887 0.748
12 1.083 0.966 0.836
13 1.167 1.045 0.907
14 1.246 1.124 0.994
15 1.326 1.203 1.066
16 1.407 1.282 1.152
17 1.487 1.361 1.225
18 1.568 1.440 1.310
19 1.648 1.519 1.383
20 1.729 1.598 1.468
21 1.809 1.678 1.543
22 1.889 1.757 1.627
23 1.969 1.836 1.702
24 2.049 1.915 1.785
25 2.129 1.995 1.861
26 2.209 2.074 1.944
27 2.289 2.154 2.020
28 2.369 2.233 2.103
29 2.449 2.312 2.179
30 2.529 2.392 2.262
31 2.609 2.471 2.338
32 2.688 2.551 2.421
33 2.768 2.630 2.497
34 2.848 2.710 2.580
35 2.928 2.789 2.656
36 3.008 2.869 2.739
37 3.087 2.948 2.815
38 3.167 3.028 2.898
39 3.247 3.107 2.975
40 3.327 3.187 3.057
41 3.406 3.266 3.134
42 3.486 3.346 3.216
43 3.566 3.425 3.293
44 3.646 3.505 3.375
45 3.725 3.584 3.452
46 3.805 3.664 3.534
47 3.885 3.743 3.611
48 3.964 3.823 3.693
49 4.044 3.902 3.770
50 4.124 3.982 3.852
51 4.203 4.061 3.929
52 4.283 4.141 4.011
53 4.363 4.220 4.088
54 4.442 4.300 4.170
55 4.522 4.379 4.247
56 4.602 4.459 4.329
57 4.681 4.538 4.407
58 4.761 4.618 4.488
59 4.841 4.697 4.566
60 4.920 4.777 4.647

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