The obvious difference between type A and type B sprocket is that, you can find a hub on type B, but no hub on type A. ANSI sprocket works with A series roller chain, no matter it's A or B type. Please find dimensions of plate wheel sprocket 40-80(08A-16A) here.

1. Piñón de rueda de placa ANSI 40 (08A-1-2)

z	Delaware	doble penetración	SIMPLE		DÚPLEX		ANSI 40
z	Delaware	doble penetración	D1	Kg	D2	Kg	08A-1-2
8	39.3	33.18	8	0.04	10	0.07	Sprocket	milímetro
9	43.2	37.13	8	0.04	10	0.1	Radio del diente r3	13.5
10	47.2	41.10	8	0.06	10	0.13	Ancho del radio C	1.6
11	51.2	45.07	8	0.07	12	0.17	Ancho de diente B1	7.2
12	55.2	49.07	8	0.08	12	0.21	Ancho de diente b1	7
13	59.2	53.06	10	0.1	12	0.25	Ancho de diente B2	21.1
14	63.2	57.07	10	0.12	12	0.3	Cadena	milímetro
15	67.2	61.09	10	0.14	12	0.36	Terreno de juego	12.7
16	71.2	65.10	10	0.16	16	0.41	Ancho interno	7.95
17	75.2	69.11	10	0.18	16	0.47	Roller Φ	7.95
18	79.2	73.14	10	0.20	16	0.54
19	83.3	77.16	10	0.23	16	0.61
20	87.3	81.19	10	0.27	16	0.68
21	91.3	85.22	12	0.28	16	0.75
22	95.4	89.24	12	0.31	16	0.83
23	99.4	93.27	12	0.35	16	0.92
24	103.4	97.29	12	0.38	16	1.01
25	107.4	101.36	12	0.41	16	1.1
26	111.5	105.36	16	0.43	16	1.2
27	115.5	109.4	16	0.46	16	1.31
28	119.5	113.42	16	0.48	16	1.42
29	123.6	117.46	16	0.53	16	1.53
30	127.6	121.50	16	0.58	16	1.65
31	131.6	125.54	16	0.63	20	1.77
32	135.7	129.56	16	0.68	20	1.9
33	139.7	133.6	16	0.73	20	2.02
34	143.8	137.64	16	0.78	20	2.16
35	147.8	141.68	16	0.83	20	2.3
36	151.8	145.72	16	0.88	20	2.42
37	155.9	149.76	16	0.93	20	2.56
38	159.9	153.80	16	0.98	20	2.71
39	163.9	157.83	16	1.03	20	2.87
40	168.0	161.87	16	1.09	20	3.03
41	172.5	165.91	20	1.14	20	3.2
42	176.6	169.95	20	1.19	20	3.36
43	180.6	173.99	20	1.25	20	3.53
44	184.6	178.03	20	1.32	20	3.71
45	188.7	182.07	20	1.38	20	3.89
46	192.7	186.10	20	1.44	20	4.07
47	196.8	190.14	20	1.51	20	4.52
48	200.8	194.18	20	1.58	20	4.66
49	204.8	198.22	20	1.65	20	4.78
50	208.9	202.26	20	1.73	20	4.88
51	212.9	206.3	20	1.8	20	5.03
52	217.0	210.34	20	1.87	20	5.24
53	221	214.37	20	1.94	20	5.46
54	225.0	218.43	20	2.02	20	5.68
55	229.1	222.46	20	2.1	20	5.9
56	233.1	226.50	20	2.17	20	6.13
57	237.2	230.54	20	2.25	20	6.36
58	241.2	234.62	20	2.36	20	6.59
59	245.2	238.62	20	2.42	20	6.83
60	249.3	242.66	20	2.50	20	7.08
62	257.4	250.74	25	2.67	25	7.6
64	265.4	258.82	25	2.85	25	8.1
65	269.5	262.86	25	2.94	25	8.36
66	273.5	266.90	25	3.03	25	8.63
68	281.6	274.99	25	3.22	25	9.2
70	289.7	283.07	25	3.42	25	9.75
72	297.8	291.16	25	3.62	25	10.33
75	309.9	303.27	25	3.94	25	11.24
76	313.9	307.33	25	4.05	25	11.55
78	322.0	315.40	25	4.27	25	12.25
80	330.1	323.48	25	4.50	25	12.9
85	350.3	343.69	25	5.62	25	14.55
90	370.5	363.90	25	6.31	25	16.36
95	390.7	384.11	25	7.05	25	18.28
100	410.9	404.31	25	7.82	25	20.3
110	451.4	444.74	25	9.50	25	24.67
114	467.5	460.90	25	10.21	25	26.57
120	491.8	485.16	25	11.32	25	29.46
125	512.0	505.37	25	12.31	25	32

2. Piñón de rueda de placa ANSI 50 (10A-1-2)

z	Delaware	doble penetración	SIMPLE		DÚPLEX		ANSI 50
z	Delaware	doble penetración	D1	Kg	D2	Kg	10A-1-2
8	48.4	41.48	10	0.06	10	0.15	Sprocket	milímetro
9	53.3	46.42	10	0.09	10	0.21	Radio del diente r3	17
10	58.3	51.37	10	0.11	12	0.27	Ancho del radio C	2
11	63.2	56.34	12	0.14	12	0.34	Ancho de diente B1	8.7
12	68.2	61.34	12	0.17	16	0.42	Ancho de diente b1	8.4
13	73.2	66.32	12	0.20	16	0.51	Ancho de diente B2	26.5
14	78.2	71.34	12	0.23	16	0.60	Cadena	milímetro
15	83.2	76.36	12	0.27	16	0.70	Terreno de juego	15.875
16	88.3	81.37	12	0.31	16	0.82	Ancho interno	9.53
17	93.3	86.39	12	0.36	16	0.94	Roller Φ	10.16
18	98.3	91.42	14	0.41	16	1.06
19	103.3	96.45	14	0.46	16	1.20
20	108.4	101.49	14	0.51	16	1.34
21	113.4	106.52	16	0.57	16	1.48
22	118.4	111.55	16	0.62	20	1.64
23	123.5	116.58	16	0.68	20	1.80
24	128.5	121.62	16	0.75	20	1.98
25	133.6	126.66	16	0.82	20	2.17
26	138.6	131.70	20	0.88	20	2.33
27	143.6	136.75	20	0.95	20	2.53
28	148.7	141.78	20	1.03	20	2.74
29	153.7	146.83	20	1.11	20	2.96
30	158.8	151.87	20	1.19	20	3.18
31	163.8	156.92	20	1.28	20	3.41
32	168.9	161.95	20	1.36	20	3.66
33	173.9	167.00	20	1.45	20	3.90
34	178.9	172.05	20	1.55	20	4.16
35	184.0	177.10	20	1.64	20	4.42
36	189.0	182.15	20	1.73	20	4.70
37	194.1	187.20	20	1.83	20	4.98
38	199.1	192.24	20	1.94	20	5.26
39	204.2	197.29	20	2.05	20	5.56
40	209.2	202.34	20	2.16	20	5.87
41	215.8	207.39	20	2.28	20	6.17
42	220.8	212.44	20	2.39	20	6.46
43	225.9	217.49	20	2.50	20	6.80
44	230.9	222.53	20	2.63	20	7.13
45	236.0	227.58	20	2.75	20	7.47
46	241.0	232.63	20	2.88	20	7.83
47	246.1	237.68	20	3.00	20	8.19
48	251.1	242.73	20	3.14	20	8.55
49	256.2	247.78	20	3.28	20	8.91
50	261.2	252.82	20	3.42	20	6.32
51	266.3	257.87	20	3.56	20	9.72
52	271.3	262.92	20	3.70	20	10.11
53	276.4	267.97	20	3.85	20	10.52
54	281.4	273.03	20	4.00	20	10.94
55	286.5	278.08	20	4.15	20	11.36
56	291.5	283.13	25	4.30	20	11.80
57	296.6	288.18	25	4.46	25	12.24
58	301.6	293.23	25	4.62	25	12.68
59	306.7	298.27	25	4.78	25	13.15
60	311.7	303.32	25	4.95	25	13.61
62	321.8	313.43	25	5.30	25	14.56
64	331.9	323.53	25	5.65	25	15.51
65	337.0	328.58	25	5.83	25	16.05
68	352.1	343.74	25	6.40	25	17.59
70	362.2	353.84	25	6.79	25	18.70
72	372.3	363.95	25	7.19	25	19.81
75	387.5	379.09	25	7.81	25	21.54
76	392.5	374.16	25	8.02	25	22.14
78	402.6	394.25	25	8.46	25	23.37
80	412.7	404.35	25	8.91	25	24.60
85	438.0	429.62	30	10.06	25	28.00
90	463.3	254.88	30	11.30	25	31.25
95	488.5	480.14	30	12.61	25	34.90
100	513.8	505.40	30	13.99	25	38.75
110	564.3	555.92	30	16.97	25	46.73
114	584.5	576.13	30	19.98	25	50.60
120	614.8	606.44	30	22.17	25	56.16
125	640.1	631.71	30	24.08	25	61.00

3. Piñón de rueda de placa ANSI 60 (12A-1-2)

z	Delaware	doble penetración	SIMPLE		DÚPLEX		ANSI 60
z	Delaware	doble penetración	D1	Kg	D2	Kg	12A-1-2
8	58.1	49.78	10				Sprocket	milímetro
9	64.0	55.70	10				Radio del diente r3	20
10	70.0	61.64	10		12		Ancho del radio C	2.4
11	76.0	67.61	12		16		Ancho de diente B1	11.7
12	81.9	76.60	12		16		Ancho de diente b1	11.3
13	87.9	79.59	14	0.35	16		Ancho de diente B2	34.1
14	94.0	85.61	14	0.41	16		Cadena	milímetro
15	100.0	91.63	14	0.48	16		Terreno de juego	19.05
16	106.0	97.65	14	0.55	20		Ancho interno	12.7
17	112.0	103.67	14	0.63	20		Roller Φ	11.91
18	118.0	109.71	14	0.71	20
19	124.1	115.75	14	0.83	20
20	130.1	121.78	14	0.92	20
21	136.2	127.82	16	0.99	20
22	142.2	133.86	16	1.09	20
23	148.2	139.90	16	1.20	20
24	154.3	145.94	16	1.31	20
25	160.3	152.00	16	1.43	20
26	166.4	158.04	16	1.56	20
27	172.4	164.09	16	1.68	20
28	178.5	170.13	16	1.82	20
29	184.5	176.19	16	1.96	20
30	190.6	182.25	16	2.10	20
31	196.6	188.31	20	2.24	20
32	202.7	194.35	20	2.39	20
33	208.8	200.40	20	2.55	20
34	214.8	206.46	20	2.71	20
35	220.9	212.52	20	2.88	20
36	226.9	218.58	20	3.06	25
37	233.0	224.64	20	3.25	25
38	239.0	230.69	20	3.42	25
39	245.1	236.75	20	3.63	25
40	251.1	242.81	20	3.85	25
41	259.1	248.87	25	4.01	25
42	265.2	254.93	25	4.19	25
43	271.3	260.98	25		25
44	277.3	267.03	25		25
45	283.3	273.10	25		25
46	289.4	279.16	25		25
47	295.5	285.21	25		25
48	301.5	291.27	25		25
49	307.6	297.33	25		25
50	313.6	303.39	25		25
51	319.7	309.45	25		25
52	325.8	315.50	25		25
53	331.8	321.56	25		25
54	337.9	327.64	25		25
55	343.9	333.70	25		25
56	350.0	339.75	25		25
57	356.1	345.81	25		25
58	362.1	351.87	25		25
59	368.2	357.93	25		25
60	374.2	363.99	25		25
62	386.4	376.12	25		30
64	398.5	388.24	25		30
65	404.5	394.29	25		30
66	410.6	400.35	25		30
68	422.7	412.49	25		30
70	434.9	424.60	25		30
72	447.0	436.74	25		30
75	465.2	454.91	25		30
76	471.2	460.99	25		30
78	483.3	473.10	25		30
80	495.5	485.22	25		30
85	525.8	515.55	25		30
90	556.1	545.86	25		30
95	586.4	576.17	25		30
100	616.7	606.47	25		30
110	677.4	667.11	25		30
114	701.6	691.36	25		30
120	738.0	727.74	25		30
125	768.3	758.05	25		30

4. Piñón de rueda de placa ANSI 80 (16A-1-2)

z	Delaware	doble penetración	SIMPLE		DÚPLEX		ANSI 80
z	Delaware	doble penetración	D1	Kg	D2	Kg	16A-1-2
8	77.9	66.37	16		20		Sprocket	milímetro
9	85.8	74.27	16		20		Radio del diente r3	27
10	93.8	82.19	16		20		Ancho del radio C	3.2
11	101.7	90.14	16		20		Ancho de diente B1	14.7
12	109.7	98.14	16	0.77	20		Ancho de diente b1	14.1
13	117.7	106.12	16	0.91	20		Ancho de diente B2	43.4
14	125.7	114.15	16	1.01	20		Cadena	milímetro
15	133.7	122.17	16	1.22	20		Terreno de juego	25.4
16	141.8	130.20	20	1.43	25		Ancho interno	15.88
17	149.8	138.22	20	1.64	25		Roller Φ	15.88
18	157.8	146.28	20	1.85	25
19	165.9	154.33	20	2.08	25
20	173.9	162.38	20	2.12	25
21	182.0	170.43	20	2.45	25
22	190.1	178.48	20	2.84	25
23	198.1	186.53	20	3.13	25
24	206.2	194.59	20	3.42	25
25	214.2	202.66	20	3.73	25
26	222.3	210.72	20	4.05	25
27	230.4	218.79	20	4.38	25
28	238.4	226.85	20	4.73	25
29	246.5	234.92	20	5.09	25
30	254.6	243.00	20	5.46	25
31	262.6	251.08	25	5.83	25
32	270.7	259.13	25	6.21	25
33	278.8	267.21	25	6.63	25
34	286.9	275.28	25	7.06	25
35	294.9	283.36	25	7.49	25
36	303.0	291.44	25	8.01	25
37	311.1	299.51	25	8.45	25
38	319.2	307.59	25	8.88	25
39	327.2	315.67	25		25
40	335.3	323.73	25		25
41	345.6	331.82	25		25
42	353.7	339.90	25		25
43	361.7	347.98	25		25
44	369.8	356.06	25		25
45	377.9	364.12	25		25
46	386.0	372.21	25		25
47	394.1	380.29	25		25
48	402.1	388.36	25		25
49	410.2	396.44	25		25
50	418.3	404.52	25		25
51	426.5	412.60	25		30
52	434.5	420.67	25		30
53	442.5	428.75	25		30
54	450.6	436.85	25		30
55	458.7	444.93	25		30
56	466.8	453.01	25		30
57	474.9	461.07	25		30
58	482.9	469.16	25		30
59	491.0	477.24	25		30
60	499.1	485.32	25		30
62	515.3	501.50	30		30
64	531.4	517.65	30		30
65	539.5	525.73	30		30
66	547.6	533.80	30		30
68	563.8	549.98	30		30
70	579.9	566.14	30		30
72	596.1	582.32	30		30
75	620.3	606.35	30		30
76	628.4	614.65	30		30
78	644.6	630.80	30		30
80	660.7	646.96	30		30
85	701.2	687.04	30		30
90	741.6	727.81	30		30
95	782.0	768.22	30		30
100	822.4	808.63	30		30
110	903.3	889.48	30		30
114	935.6	921.81	30		40
120	984.1	970.33	30		40
125	1024.5	1010.73	30		40