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Custom Sprocket Diameter Chart

To help you determine if a custom sprocket will fit in particular space,  we are providing you the sprocket diameter charts below for some of our more popular chain sizes and tooth counts.

NOTE: These are NOT necessarily all the sprocket size we can make….Just the more popular sizes. NOTE :For whatever reason, we could not upload the sprocket chart for 60 series chain….

If you need chain size or tooth count  NOT listed below please feel free to call us at 434-971-7924….We can make practically anything!

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

STANDARD ROLLER CHAIN SPROCKET DIAMETERS
3/8 INCH PITCH – NO. 35
.200-INCH DIAMETER ROLLER

No.
Teeth
Outside
Diameter
Pitch
Diameter
Caliper
Diameter
8 1.130 0.980 0.780
9 1.256 1.097 0.880
10 1.379 1.214 1.014
11 1.502 1.331 1.117
12 1.625 1.449 1.249
13 1.746 1.567 1.356
14 1.868 1.685 1.485
15 1.989 1.804 1.594
16 2.110 1.922 1.722
17 2.231 2.041 1.832
18 2.352 2.160 1.960
19 2.472 2.279 2.071
20 2.593 2.397 2.197
21 2.713 2.516 2.309
22 2.833 2.635 2.435
23 2.954 2.754 2.548
24 3.074 2.873 2.673
25 3.194 2.992 2.786
26 3.314 3.111 2.911
27 3.434 3.230 3.025
28 3.553 3.349 3.149
29 3.673 3.468 3.263
30 3.793 3.588 3.388
31 3.913 3.707 3.502
32 4.032 3.826 3.626
33 4.152 3.945 3.741
34 4.272 4.064 3.864
35 4.392 4.184 3.979
36 4.511 4.303 4.103
37 4.631 4.422 4.218
38 4.751 4.541 4.341
39 4.870 4.661 4.457
40 4.990 4.780 4.580
41 5.109 4.899 4.695
42 5.229 5.018 4.818
43 5.349 5.138 4.934
44 5.468 5.257 5.057
45 5.588 5.376 5.173
46 5.707 5.495 5.295
47 5.827 5.615 5.411
48 5.946 5.734 5.534
49 6.066 5.853 5.650
50 6.186 5.972 5.772
51 6.305 6.092 5.889
52 6.425 6.211 6.011
53 6.544 6.330 6.127
54 6.663 6.449 6.249
55 6.783 6.569 6.366
56 6.903 6.688 6.488
57 7.022 6.807 6.605
58 7.142 6.927 6.727
59 7.261 7.046 6.843
60 7.380 7.165 6.965
61 7.500 7.285 7.082
62 7.619 7.404 7.204
63 7.739 7.523 7.321
64 7.859 7.643 7.443
65 7.978 7.762 7.560

STANDARD ROLLER CHAIN SPROCKET DIAMETERS
1/2 – INCH PITCH – NO. 40
.312 INCH DIAMETER ROLLER

No.
Teeth
Outside
Diameter
Pitch
Diameter
Caliper
Diameter
6 1.166 1.000 0.688
7 1.338 1.152 0.812
8 1.507 1.307 0.995
9 1.674 1.462 1.127
10 1.839 1.618 1.305
11 2.003 1.775 1.444
12 2.166 1.932 1.614
13 2.328 2.089 1.761
14 2.490 2.247 1.934
15 2.652 2.405 2.079
16 2.814 2.563 2.250
17 2.974 2.721 2.397
18 3.136 2.879 2.567
19 3.292 3.038 2.715
20 3.457 3.196 2.883
21 3.618 3.355 3.033
22 3.778 3.513 3.201
23 3.938 3.672 3.351
24 4.098 3.831 3.518
25 4.258 3.989 3.669
26 4.418 4.148 3.835
27 4.578 4.307 3.987
28 4.738 4.465 4.153
29 4.898 4.625 4.305
30 5.057 4.783 4.471
31 5.217 4.942 4.623
32 5.376 5.101 4.788
33 5.536 5.260 4.941
34 5.696 5.419 5.107
35 5.856 5.578 5.260
36 6.015 5.737 5.425
37 6.174 5.896 5.578
38 6.334 6.055 5.742
39 6.494 6.214 5.896
40 6.653 6.373 6.061
41 6.812 6.532 6.214
42 6.972 6.691 6.379
43 7.132 6.850 6.532
44 7.291 7.009 6.696
45 7.450 7.168 6.851
46 7.609 7.327 7.014
47 7.769 7.486 7.169
48 7.928 7.645 7.332
49 8.088 7.804 7.487
50 8.248 7.963 7.650
51 8.406 8.122 7.805
52 8.566 8.281 7.968
53 8.725 8.440 8.124
54 8.884 8.599 8.286
55 9.044 8.758 8.442
56 9.204 8.917 8.605
57 9.362 9.077 8.760
58 9.522 9.235 8.924
59 9.628 9.395 9.078
60 9.840 9.554 9.241
61 10.000 9.713 9.397
62 10.159 9.872 9.559
63 10.319 10.031 9.715
64 10.478 10.190 9.872
65 10.673 10.349 10.033
66 10.796 10.508 10.195
67 10.955 10.667 10.352
68 11.115 10.826 10.514
69 11.274 10.985 10.670
70 11.433 11.145 10.832
71 11.592 11.304 10.988
72 11.752 11.463 11.151
73 11.911 11.622 11.306
74 12.070 11.781 11.468
75 12.229 11.940 11.625
76 12.389 12.099 11.786
77 12.548 12.258 11.943
78 12.707 12.417 12.105
79 12.866 12.576 12.261
80 13.026 12.736 12.423
81 13.185 12.895 12.580
82 13.344 13.054 12.742
83 13.503 13.213 12.898
84 13.663 13.372 13.059
85 13.822 13.531 13.216
86 13.981 13.690 13.373
87 14.140 13.849 13.534
88 14.299 14.009 13.696
89 14.459 14.168 13.853
90 14.618 14.327 14.014
91 14.777 14.486 14.171
92 14.936 14.645 14.332
93 15.096 14.804 14.489
94 15.255 14.963 14.651
95 15.414 15.122 14.808
96 15.573 15.282 14.969
97 15.732 15.441 15.126
98 15.892 15.600 15.287
99 16.051 15.759 15.445
100 16.210 15.918 15.605
101 16.369 16.077 15.763
102 16.528 16.236 15.924
103 16.688 16.395 16.081
104 16.847 16.555 16.242
105 17.006 16.714 16.399
106 17.165 16.873 16.561
107 17.324 17.032 16.717
108 17.484 17.191 16.878
109 17.643 17.351 17.036
110 17.802 17.509 17.197
111 17.962 17.668 17.304
112 18.121 17.827 17.515
113 18.280 17.987 17.672
114 18.439 18.146 17.834
115 18.598 18.305 17.991
116 18.757 18.464 18.151
117 18.916 18.623 18.309
118 19.076 18.782 18.470
119 19.235 18.941 18.627
120 19.394 19.101 18.788
121 19.553 19.260 18.946
122 19.712 19.419 19.106
123 19.872 19.578 19.264
124 20.031 19.737 19.425
125 20.190 19.896 19.582

STANDARD ROLLER CHAIN SPROCKET DIAMETERS
5/8 INCH PITCH – NO. 50
.400 INCH DIAMETER ROLLER

No.
Teeth
Outside
Diameter
Pitch
Diameter
Caliper
Diameter
8 1.884 1.633 1.233
9 2.093 1.828 1.400
10 2.299 2.023 1.623
11 2.504 2.219 1.796
12 2.708 2.415 2.015
13 2.911 2.612 2.193
14 3.113 2.809 2.409
15 3.315 3.006 2.590
16 3.517 3.204 2.804
17 3.718 3.401 2.987
18 3.919 3.599 3.159
19 4.121 3.798 3.384
20 4.321 3.995 3.595
21 4.522 4.194 3.782
22 4.722 4.392 3.992
23 4.923 4.590 4.179
24 5.123 4.788 4.388
25 5.323 4.987 4.577
26 5.523 5.185 4.785
27 5.723 5.384 4.975
28 5.922 5.582 5.182
29 6.122 5.781 5.371
30 6.321 5.979 5.579
31 6.521 6.178 5.770
32 6.721 6.376 5.976
33 6.921 6.575 6.168
34 7.120 6.774 6.374
35 7.319 6.973 6.565
36 7.519 7.171 6.771
37 7.718 7.370 6.963
38 7.918 7.569 7.169
39 8.117 7.768 7.361
40 8.316 7.966 7.566
41 8.516 8.165 7.759
42 8.715 8.364 7.964
43 8.914 8.563 8.157
44 9.114 8.761 8.361
45 9.313 8.960 8.554
46 9.512 9.159 8.759
47 9.711 9.358 8.952
48 9.911 9.556 9.156
49 10.110 9.755 9.350
50 10.309 9.954 9.554
51 10.508 10.153 9.748
52 10.708 10.351 9.951
53 10.907 10.550 10.146
54 11.106 10.749 10.349
55 11.305 10.948 10.543
56 11.504 11.147 10.747
57 11.703 11.346 10.941
58 11.903 11.544 11.144
59 12.102 11.743 11.339
60 12.301 11.942 11.542
61 12.500 12.141 11.737
62 12.699 12.340 11.940
63 12.898 12.539 12.135
64 13.098 12.738 12.338
65 13.296 12.936 12.533
66 13.496 13.135 12.735
67 13.694 13.334 12.930
68 13.894 13.533 13.133
69 14.093 13.732 13.328
70 14.292 13.931 13.531
71 14.491 14.129 13.726
72 14.690 14.329 13.929
73 14.889 14.528 14.124
74 15.088 14.726 14.326
75 15.287 14.925 14.522
76 15.486 15.124 14.724
77 15.685 15.323 14.920
78 15.884 15.522 15.122
79 16.083 15.721 15.318
80 16.283 15.919 15.519
81 16.481 16.119 15.715
82 16.681 16.318 15.918
83 16.879 16.516 16.113
84 17.079 16.715 16.315
85 17.278 16.914 16.511
86 17.476 17.113 16.713
87 17.676 17.312 16.909
88 17.874 17.511 17.111
89 18.074 17.709 17.307
90 18.273 17.909 17.509
91 18.472 18.108 17.705
92 18.671 18.306 17.906
93 18.870 18.505 18.103
94 19.069 18.704 18.304
95 19.268 18.903 18.501
96 19.467 19.102 18.702
97 19.666 19.301 18.898
98 19.865 19.500 19.100
99 20.064 19.699 19.296
100 20.263 19.898 19.498
101 20.462 20.096 19.694
102 20.661 20.296 19.896
103 20.860 20.494 20.092
104 21.059 20.693 20.293
105 21.258 20.893 20.490
106 21.457 21.091 20.691
107 21.656 21.290 20.888
108 21.855 21.489 21.089
109 22.054 21.688 21.286
110 22.253 21.887 21.487
111 22.452 22.086 21.684
112 22.651 22.284 21.884
113 22.850 22.484 22.081
114 23.049 22.683 22.283
115 23.248 22.881 22.479
116 23.447 23.080 22.680
117 23.646 23.279 22.827
118 23.845 23.478 23.078
119 24.004 23.677 23.275
120 24.243 23.876 23.476
121 24.442 24.075 23.673
122 24.641 24.274 23.874
123 24.840 24.473 24.071
124 25.039 24.672 24.272
125 25.238 24.871 24.469


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