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. ANSI-Plattenradkettenrad 40 (08A-1-2)

z	de	dp	SIMPLEX		DUPLEX		ANSI-40
z	de	dp	D1	Kg	D2	Kg	08A-1-2
8	39.3	33.18	8	0.04	10	0.07	Sprocket	mm
9	43.2	37.13	8	0.04	10	0.1	Zahnradius r3	13.5
10	47.2	41.10	8	0.06	10	0.13	Radiusbreite C	1.6
11	51.2	45.07	8	0.07	12	0.17	Zahnbreite B1	7.2
12	55.2	49.07	8	0.08	12	0.21	Zahnbreite b1	7
13	59.2	53.06	10	0.1	12	0.25	Zahnbreite B2	21.1
14	63.2	57.07	10	0.12	12	0.3	Kette	mm
15	67.2	61.09	10	0.14	12	0.36	Tonhöhe	12.7
16	71.2	65.10	10	0.16	16	0.41	Innenbreite	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. ANSI-Plattenradkettenrad 50 (10A-1-2)

z	de	dp	SIMPLEX		DUPLEX		ANSI-50
z	de	dp	D1	Kg	D2	Kg	10A-1-2
8	48.4	41.48	10	0.06	10	0.15	Sprocket	mm
9	53.3	46.42	10	0.09	10	0.21	Zahnradius r3	17
10	58.3	51.37	10	0.11	12	0.27	Radiusbreite C	2
11	63.2	56.34	12	0.14	12	0.34	Zahnbreite B1	8.7
12	68.2	61.34	12	0.17	16	0.42	Zahnbreite b1	8.4
13	73.2	66.32	12	0.20	16	0.51	Zahnbreite B2	26.5
14	78.2	71.34	12	0.23	16	0.60	Kette	mm
15	83.2	76.36	12	0.27	16	0.70	Tonhöhe	15.875
16	88.3	81.37	12	0.31	16	0.82	Innenbreite	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. ANSI-Plattenradkettenrad 60 (12A-1-2)

z	de	dp	SIMPLEX		DUPLEX		ANSI-60
z	de	dp	D1	Kg	D2	Kg	12A-1-2
8	58.1	49.78	10				Sprocket	mm
9	64.0	55.70	10				Zahnradius r3	20
10	70.0	61.64	10		12		Radiusbreite C	2.4
11	76.0	67.61	12		16		Zahnbreite B1	11.7
12	81.9	76.60	12		16		Zahnbreite b1	11.3
13	87.9	79.59	14	0.35	16		Zahnbreite B2	34.1
14	94.0	85.61	14	0.41	16		Kette	mm
15	100.0	91.63	14	0.48	16		Tonhöhe	19.05
16	106.0	97.65	14	0.55	20		Innenbreite	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. ANSI-Plattenradkettenrad 80 (16A-1-2)

z	de	dp	SIMPLEX		DUPLEX		ANSI80
z	de	dp	D1	Kg	D2	Kg	16A-1-2
8	77.9	66.37	16		20		Sprocket	mm
9	85.8	74.27	16		20		Zahnradius r3	27
10	93.8	82.19	16		20		Radiusbreite C	3.2
11	101.7	90.14	16		20		Zahnbreite B1	14.7
12	109.7	98.14	16	0.77	20		Zahnbreite b1	14.1
13	117.7	106.12	16	0.91	20		Zahnbreite B2	43.4
14	125.7	114.15	16	1.01	20		Kette	mm
15	133.7	122.17	16	1.22	20		Tonhöhe	25.4
16	141.8	130.20	20	1.43	25		Innenbreite	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