Sprocket Catalog - U.S. Tsubaki, Inc.
Sprocket Catalog - U.S. Tsubaki, Inc.
Sprocket Catalog - U.S. Tsubaki, Inc.
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<strong>Sprocket</strong> Pitch Diameter Constants<br />
To obtain the pitch diameter of a sprocket, multiply the constant for the<br />
number of teeth (as shown above) by the chain pitch.<br />
To determine the pitch diameter of a 28-tooth sprocket for 140 chain —<br />
use a constant of 8.9315 and multiply by chain pitch (1³⁄₄”) to obtain a<br />
pitch diameter of 15.63”.<br />
Dimensions are in inches unless otherwise indicated.<br />
Number of Number of Number of<br />
Teeth Constant Teeth Constant Teeth Constant<br />
4<br />
5<br />
6<br />
7<br />
8<br />
9<br />
10<br />
11<br />
12<br />
13<br />
14<br />
15<br />
16<br />
17<br />
18<br />
19<br />
20<br />
21<br />
22<br />
23<br />
24<br />
25<br />
26<br />
27<br />
28<br />
29<br />
30<br />
31<br />
32<br />
33<br />
34<br />
35<br />
36<br />
37<br />
38<br />
39<br />
40<br />
41<br />
42<br />
43<br />
44<br />
45<br />
46<br />
47<br />
48<br />
49<br />
50<br />
51<br />
52<br />
1.4142<br />
1.7013<br />
2.0000<br />
2.3048<br />
2.6131<br />
2.9238<br />
3.2361<br />
3.5495<br />
3.8637<br />
4.1785<br />
4.4940<br />
4.8097<br />
5.1259<br />
5.4423<br />
5.7588<br />
6.0756<br />
6.3925<br />
6.7095<br />
7.0266<br />
7.3439<br />
7.6613<br />
7.9787<br />
8.2962<br />
8.6138<br />
8.9315<br />
9.2491<br />
9.5668<br />
9.8845<br />
10.2023<br />
10.5201<br />
10.8380<br />
11.1558<br />
11.4737<br />
11.7917<br />
12.1096<br />
12.4275<br />
12.7455<br />
13.0635<br />
13.3815<br />
13.6995<br />
14.0175<br />
14.3356<br />
14.6536<br />
14.9717<br />
15.2898<br />
15.6079<br />
15.9260<br />
16.2441<br />
16.5619<br />
53<br />
54<br />
55<br />
56<br />
57<br />
58<br />
59<br />
60<br />
61<br />
62<br />
63<br />
64<br />
65<br />
66<br />
67<br />
68<br />
69<br />
70<br />
71<br />
72<br />
73<br />
74<br />
75<br />
76<br />
77<br />
78<br />
79<br />
80<br />
81<br />
82<br />
83<br />
84<br />
85<br />
86<br />
87<br />
88<br />
89<br />
90<br />
91<br />
92<br />
93<br />
94<br />
95<br />
96<br />
97<br />
98<br />
99<br />
100<br />
101<br />
16.8803<br />
17.1984<br />
17.5166<br />
17.8347<br />
18.1529<br />
18.4710<br />
18.7892<br />
19.1073<br />
19.4255<br />
19.7437<br />
20.0618<br />
20.3800<br />
20.6982<br />
21.0164<br />
21.3346<br />
21.6528<br />
21.9710<br />
22.2892<br />
22.6074<br />
22.9256<br />
23.2438<br />
23.5620<br />
23.8802<br />
24.1984<br />
24.5166<br />
24.8349<br />
25.1531<br />
25.4713<br />
25.7896<br />
26.1079<br />
26.4261<br />
26.7442<br />
27.0626<br />
27.3807<br />
27.6989<br />
28.0170<br />
28.3355<br />
28.6537<br />
28.9723<br />
29.2901<br />
29.6082<br />
29.9268<br />
30.2447<br />
30.5632<br />
30.8815<br />
31.1999<br />
31.5177<br />
31.8362<br />
32.1540<br />
102<br />
103<br />
104<br />
105<br />
106<br />
107<br />
108<br />
109<br />
110<br />
111<br />
112<br />
113<br />
114<br />
115<br />
116<br />
117<br />
118<br />
119<br />
120<br />
121<br />
122<br />
123<br />
124<br />
125<br />
126<br />
127<br />
128<br />
129<br />
130<br />
131<br />
132<br />
133<br />
134<br />
135<br />
136<br />
137<br />
138<br />
139<br />
140<br />
141<br />
142<br />
143<br />
144<br />
145<br />
146<br />
147<br />
148<br />
149<br />
150<br />
32.473<br />
32.791<br />
33.109<br />
33.427<br />
33.746<br />
34.064<br />
34.382<br />
34.701<br />
35.019<br />
35.337<br />
35.655<br />
35.974<br />
36.292<br />
36.610<br />
36.929<br />
37.247<br />
37.565<br />
37.883<br />
38.201<br />
38.519<br />
38.837<br />
39.156<br />
39.475<br />
39.794<br />
40.112<br />
40.430<br />
40.748<br />
41.066<br />
41.384<br />
41.702<br />
42.020<br />
42.338<br />
42.656<br />
42.975<br />
43.293<br />
43.611<br />
43.930<br />
44.249<br />
44.567<br />
44.885<br />
45.203<br />
45.521<br />
45.840<br />
46.158<br />
46.477<br />
46.796<br />
47.114<br />
47.432<br />
47.750<br />
79
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