Tables / ANSI 140

Sprocket chart 1 3/4" x 1" — ANSI 140 (28A)

Chain American ANSI B29.1 · pitch 1.750" (44.45 mm) · roller Ø 1.000" · inner width 0.993" · simplex tooth width 0.943". Dimensions in inches. Tap a row to open it in the calculator (duplex, triplex, mm, material).

N	PD	OD	BD	CD	Max hub
8	4.573	5.275	3.573	3.573	2.465
9	5.117	5.858	4.117	4.039	3.049
10	5.663	6.436	4.663	4.663	3.627
11	6.212	7.010	5.212	5.148	4.201
12	6.761	7.581	5.761	5.761	4.772
13	7.313	8.150	6.313	6.259	5.341
14	7.864	8.717	6.864	6.864	5.908
15	8.417	9.283	7.417	7.371	6.474
16	8.970	9.848	7.970	7.970	7.038
17	9.524	10.412	8.524	8.483	7.602
18	10.078	10.975	9.078	9.078	8.165
19	10.632	11.537	9.632	9.596	8.728
20	11.187	12.099	10.187	10.187	9.290
21	11.742	12.660	10.742	10.709	9.851
22	12.297	13.222	11.297	11.297	10.412
23	12.852	13.782	11.852	11.822	10.973
24	13.407	14.343	12.407	12.407	11.533
25	13.963	14.903	12.963	12.935	12.093
26	14.518	15.463	13.518	13.518	12.653
27	15.074	16.022	14.074	14.049	13.213
28	15.630	16.582	14.630	14.630	13.772
29	16.186	17.141	15.186	15.162	14.332
30	16.742	17.700	15.742	15.742	14.891
31	17.298	18.259	16.298	16.276	15.450
32	17.854	18.818	16.854	16.854	16.009
33	18.410	19.377	17.410	17.389	16.567
34	18.966	19.936	17.966	17.966	17.126
35	19.523	20.494	18.523	18.503	17.685
36	20.079	21.053	19.079	19.079	18.243
37	20.635	21.611	19.635	19.617	18.802
38	21.192	22.169	20.192	20.192	19.360
39	21.748	22.728	20.748	20.731	19.918
40	22.305	23.286	21.305	21.305	20.476
41	22.861	23.844	21.861	21.844	21.035
42	23.418	24.402	22.418	22.418	21.593
43	23.974	24.960	22.974	22.958	22.151
44	24.531	25.518	23.531	23.531	22.709
45	25.087	26.076	24.087	24.072	23.267
46	25.644	26.634	24.644	24.644	23.825
47	26.200	27.192	25.200	25.186	24.383
48	26.757	27.750	25.757	25.757	24.940
49	27.314	28.308	26.314	26.300	25.498
50	27.870	28.865	26.870	26.870	26.056
51	28.427	29.423	27.427	27.414	26.614
52	28.984	29.981	27.984	27.984	27.172
53	29.541	30.539	28.541	28.528	27.729
54	30.097	31.096	29.097	29.097	28.287
55	30.654	31.654	29.654	29.641	28.845
56	31.211	32.212	30.211	30.211	29.402
57	31.767	32.769	30.767	30.755	29.960
58	32.324	33.327	31.324	31.324	30.517
59	32.881	33.884	31.881	31.869	31.075
60	33.438	34.442	32.438	32.438	31.633
61	33.995	35.000	32.995	32.983	32.190
62	34.551	35.557	33.551	33.551	32.748
63	35.108	36.115	34.108	34.097	33.305
64	35.665	36.672	34.665	34.665	33.863
65	36.222	37.230	35.222	35.211	34.420
66	36.779	37.787	35.779	35.779	34.978
67	37.336	38.344	36.336	36.325	35.535
68	37.892	38.902	36.892	36.892	36.092
69	38.449	39.459	37.449	37.439	36.650
70	39.006	40.017	38.006	38.006	37.207
71	39.563	40.574	38.563	38.553	37.765
72	40.120	41.132	39.120	39.120	38.322
73	40.677	41.689	39.677	39.667	38.880
74	41.234	42.246	40.234	40.234	39.437
75	41.790	42.804	40.790	40.781	39.994
76	42.347	43.361	41.347	41.347	40.552
77	42.904	43.918	41.904	41.895	41.109
78	43.461	44.476	42.461	42.461	41.666
79	44.018	45.033	43.018	43.009	42.224
80	44.575	45.590	43.575	43.575	42.781
81	45.132	46.148	44.132	44.123	43.338
82	45.689	46.705	44.689	44.689	43.896
83	46.246	47.262	45.246	45.237	44.453
84	46.802	47.820	45.802	45.802	45.010
85	47.359	48.377	46.359	46.351	45.568
86	47.916	48.934	46.916	46.916	46.125
87	48.473	49.492	47.473	47.465	46.682
88	49.030	50.049	48.030	48.030	47.239
89	49.587	50.606	48.587	48.579	47.797
90	50.144	51.163	49.144	49.144	48.354
91	50.701	51.721	49.701	49.693	48.911
92	51.258	52.278	50.258	50.258	49.469
93	51.815	52.835	50.815	50.807	50.026
94	52.372	53.392	51.372	51.372	50.583
95	52.929	53.950	51.929	51.921	51.140
96	53.486	54.507	52.486	52.486	51.698
97	54.043	55.064	53.043	53.035	52.255
98	54.599	55.621	53.599	53.599	52.812
99	55.156	56.179	54.156	54.150	53.369
100	55.713	56.736	54.713	54.713	53.926
101	56.270	57.293	55.270	55.264	54.484
102	56.827	57.850	55.827	55.827	55.041
103	57.384	58.408	56.384	56.378	55.598
104	57.941	58.965	56.941	56.941	56.155
105	58.498	59.522	57.498	57.492	56.713
106	59.055	60.079	58.055	58.055	57.270
107	59.612	60.636	58.612	58.606	57.827
108	60.169	61.194	59.169	59.169	58.384
109	60.726	61.751	59.726	59.720	58.941
110	61.283	62.308	60.283	60.283	59.499
111	61.840	62.865	60.840	60.834	60.056
112	62.397	63.422	61.397	61.397	60.613
113	62.954	63.980	61.954	61.948	61.170
114	63.511	64.537	62.511	62.511	61.727
115	64.068	65.094	63.068	63.062	62.284
116	64.625	65.651	63.625	63.625	62.842
117	65.182	66.208	64.182	64.176	63.399
118	65.739	66.765	64.739	64.739	63.956
119	66.296	67.323	65.296	65.290	64.513
120	66.853	67.880	65.853	65.853	65.070

PD = p / sin(180°/N) · OD = p·(0.6 + cot(180°/N)) · BD = PD − roller Ø · CD = BD (even N) or PD·cos(90°/N) − roller Ø (odd N).