Call us 1.800.966.5018

1/2''Pitch All Steel Stock Sprockets

Single-Type "BS"- 2 Setscrews-Bored-To-Size
NO. Teeth Catalog Mumber Outside Diameter Length Thru Bore Weight Lbs.(Approx.) Stock Finished Bores Includes Keyway and 2 Setscrews
9 40BS9 1.67 8-7 0.16 *1/2-5/8
10 40BS10 1.84 8-7 0.24 *1/2-5/8-3/4
11 40BS11 2 8-7 0.28 *1/2-5/8-3/4-7/8
12 40BS12 2.17 8-7 0.34 *1/2-5/8-3/4-7/8-1
13 40BS13 2.33 8-7 0.45 *1/2-5/8-3/4-7/8-1
14 40BS14 2.49 8-7 0.51 *1/2-5/8-3/4-7/8-1
15 40BS15 2.65 8-7 0.53 *1/2-5/8-3/4-7/8-1-1 1/8-1 3/16-1 1/4
16 40BS16 2.81 8-7 0.66 5/8-3/4-7/8-1-1 1/8-1 3/16-1 1/4
17 40BS17 2.97 1 0.88 5/8-3/4-7/8-1-1 1/8-1 3/16-1 1/4
18 40BS18 3.14 1 1.03 5/8-3/4-7/8-1-1 1/8-1 3/16-1 1/4-1 3/8-1 7/16-1 1/2
19 40BS19 3.3 1 1.17 5/8-3/4-7/8-1-1 1/8-1 3/16-1 1/4-1 3/8-1 7/16-1 1/2
20 40BS20 3.46 1 1.33 5/8-3/4-7/8-1-1 1/8-1 3/16-1 1/4-1 3/8-1 7/16-1 1/2
21 40BS21 3.62 1 1.53 5/8-3/4-7/8-1-1 1/8-1 3/16-1 1/4-1 3/8-1 7/16-1 1/2
22 40BS22 3.78 1 1.66 5/8-3/4-7/8-1-1 1/8-1 3/16-1 1/4-1 3/8-1 7/16-1 1/2
23 40BS23 3.94 1 1.92 5/8-3/4-7/8-1-1 1/8-1 3/16-1 1/4-1 3/8-1 7/16-1 1/2
24 40BS24 4.1 1 2.1 5/8-3/4-7/8-1-1 1/8-1 3/16-1 1/4-1 3/8-1 7/16-1 1/2
25 40BS25 4.26 1 2.22 5/8-3/4-7/8-1-1 1/8-1 3/16-1 1/4- -1 7/16-1 1/2
26 40BS26 4.42 1 2.34 5/8-3/4-7/8-1-1 1/8-1 3/16-1 1/4- -1 7/16-1 1/2
27 40BS27 4.58 1 2.42 5/8-3/4-7/8-1-1 1/8-1 3/16-1 1/4- -1 7/16-1 1/2
28 40BS28 4.74 1 2.5 5/8-3/4-7/8-1-1 1/8-1 3/16-1 1/4- -1 7/16-1 1/2
29 40BS29 4.9 1 2.6 5/8-3/4-7/8-1-1 1/8-1 3/16-1 1/4- -1 7/16-1 1/2
30 40BS30 5.06 1 2.7 5/8-3/4-7/8-1-1 1/8-1 3/16-1 1/4- -1 7/16-1 1/2
31 40BS31 5.22 1 2.88 5/8-3/4-7/8-1-1 1/8-1 3/16-1 1/4- -1 7/16-1 1/2
32 40BS32 5.38 1 3 5/8-3/4-7/8-1-1 1/8-1 3/16-1 1/4- -1 7/16-1 1/2
33 40BS33 5.54 1 3.03 5/8-3/4-7/8-1-1 1/8-1 3/16-1 1/4- -1 7/16-1 1/2
34 40BS34 5.7 1 3.11 5/8-3/4-7/8-1-1 1/8-1 3/16-1 1/4- -1 7/16-1 1/2
35 40BS35 5.86 1 3.2 5/8-3/4-7/8-1-1 1/8-1 3/16-1 1/4- -1 7/16-1 1/2
36 40BS36 6.02 1 3.39 5/8-3/4-7/8-1-1 1/8-1 3/16-1 1/4- -1 7/16-1 1/2
37 40BS37 6.17 1 3.45 5/8-3/4-7/8-1-1 1/8-1 3/16-1 1/4- -1 7/16-1 1/2
38 40BS38 6.33 1 3.5 5/8-3/4-7/8-1-1 1/8-1 3/16-1 1/4- -1 7/16-1 1/2
39 40BS39 6.49 1 4 5/8-3/4-7/8-1-1 1/8-1 3/16-1 1/4- -1 7/16-1 1/2
40 40BS40 6.65 1 1/8 4.28 -3/4-7/8-1-1 1/8-1 3/16-1 1/4- -1 7/16-1 1/2
41 40BS41 6.81 1 1/8 4.58 -3/4-7/8-1-1 1/8-1 3/16-1 1/4- -1 7/16-1 1/2
42 40BS42 6.97 1 1/8 4.64 -3/4-7/8-1-1 1/8-1 3/16-1 1/4- -1 7/16-1 1/2
43 40BS43 7.13 1 1/8 4.8 -3/4-7/8-1-1 1/8-1 3/16-1 1/4- -1 7/16-1 1/2
44 40BS44 7.29 1 1/8 4.96 -3/4-7/8-1-1 1/8-1 3/16-1 1/4- -1 7/16-1 1/2
45 40BS45 7.45 1 1/8 5.06 -3/4-7/8-1-1 1/8-1 3/16-1 1/4- -1 7/16-1 1/2
46 40BS46 7.61 1 1/8 5.19 -3/4-7/8-1-1 1/8-1 3/16-1 1/4- -1 7/16-1 1/2
47 40BS47 7.77 1 1/8 5.26 -3/4-7/8-1-1 1/8-1 3/16-1 1/4- -1 7/16-1 1/2
48 40BS48 7.93 1 1/8 5.66 -3/4-7/8-1-1 1/8-1 3/16-1 1/4- -1 7/16-1 1/2
49 40BS49 8.09 1 1/8 5.72 -3/4-7/8-1-1 1/8-1 3/16-1 1/4- -1 7/16-1 1/2
50 40BS50 8.25 1 1/8 5.78 -3/4-7/8-1-1 1/8-1 3/16-1 1/4- -1 7/16-1 1/2
51 40BS51 8.41 1 1/8 5.9 -3/4-7/8-1-1 1/8-1 3/16-1 1/4- -1 7/16-1 1/2
52 40BS52 8.57 1 1/8 5.94 -3/4-7/8-1-1 1/8-1 3/16-1 1/4- -1 7/16-1 1/2
53 40BS53 8.73 1 1/8 6.12 -3/4-7/8-1-1 1/8-1 3/16-1 1/4- -1 7/16-1 1/2
54 40BS54 8.88 1 1/8 6.24 -3/4-7/8-1-1 1/8-1 3/16-1 1/4- -1 7/16-1 1/2
55 40BS55 9.04 1 1/8 6.66 -3/4-7/8-1-1 1/8-1 3/16-1 1/4- -1 7/16-1 1/2
56 40BS56 9.2 1 1/8 6.71 -3/4-7/8-1-1 1/8-1 3/16-1 1/4- -1 7/16-1 1/2
57 40BS57 9.36 1 1/8 6.94 -3/4-7/8-1-1 1/8-1 3/16-1 1/4- -1 7/16-1 1/2
58 40BS58 9.52 1 1/8 7.17 -3/4-7/8-1-1 1/8-1 3/16-1 1/4- -1 7/16-1 1/2
59 40BS59 9.68 1 1/8 7.38 -3/4-7/8-1-1 1/8-1 3/16-1 1/4- -1 7/16-1 1/2
60 40BS60 9.84 1 1/8 7.68 -3/4-7/8-1-1 1/8-1 3/16-1 1/4- -1 7/16-1 1/2
70 40BS70 11.43 1 1/4 10.8 -3/4-7/8-1-1 1/8-1 3/16-1 1/4- -1 7/16-1 1/2
72 40BS72 11.75 1 1/4 11.3 -3/4-7/8-1-1 1/8-1 3/16-1 1/4- -1 7/16-1 1/2
80 40BS80 13.03 1 1/4 13.2 -3/4-7/8-1-1 1/8-1 3/16-1 1/4- -1 7/16-1 1/2
84 40BS84 13.66 1 1/4 13.84 -3/4-7/8-1-1 1/8-1 3/16-1 1/4- -1 7/16-1 1/2
96 40BS96 15.57 1 1/4 17.44 -1-1 1/8-1 3/16-1 1/4- -1 7/16-1 1/2
112 40BS112 18.12 1 1/4 22.45 -1-1 1/8-1 3/16-1 1/4- -1 7/16-1 1/2

Indicates no keyway.(2)1/4 Setscrews only in 1/2 bore Hub diameters vary to suit different bore sizes. KEYWAY IS ON CENTER LINE OF TOOTH