keyway specifications listed are the standard keyway sizes furnished with corresponding bore sizes these sizes will be supplied when keyway size is specified on an order if other than standard is required please specify non-standard keyway when ordering bore bore 1/2 5/8 to 9/16 to 7/8 15/16 to 1-1/4 1-5/16 to 1-3/8 1-7/16 to 1-3/4 keyway 1/8 x 1/16 3/16 x 3/32 1/4 x 1/8 5/16 x 5/32 3/8 x 3/16 bore bore 1-13/16 to 2-1/4 2-5/16 to 2-3/4 2-13/15 to 3 3-5/16 to 3-3/4 3-13/16 to 4-1/2 keyway keyway 1/2 x 1/4 5/8 x 5/16 3/4 x 3/8 7/8 x 7/16 1 x 1/2 keyway tolerances width .002 -0 depth .010 -0 standard keyway sizes decimal equivalents inches fraction 1/64 1/32 3/64 1/16 5/64 3/32 7/64 1/8 9/64 5/32 11/64 3/16 13/64 7/32 15/64 1/4 17/64 9/32 19/64 5/16 21/64 11/32 23/64 3/8 25/64 13/32 27/64 7/16 29/64 15/32 31/64 1/2 decimal 0.0156 0.0313 0.0469 0.0625 0.0781 0.0938 0.1094 0.1250 0.1406 0.1563 0.1719 0.1875 0.2031 0.2188 0.2344 0.2500 0.2656 0.281
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finished bore 1/2 pitch single type b part no h40b9 h40b10 h40b11 h40b12 h40b13 h40b14 h40b15 h40b16 h40b17 h40b18 h40b19 h40b20 h40b21 h40b22 h40b23 h40b24 h40b25 h40b26 h40b27 h40b28 h40b29 h40b30 h40b31 h40b32 h40b33 h40b34 h40b35 h40b36 h40b37 h40b38 h40b39 h40b40 h40b41 h40b42 h40b43 h40b44 h40b45 h40b46 h40b47 h40b48 h40b49 h40b50 h40b51 h40b52 h40b53 h40b54 h40b55 h40b56 h40b57 h40b58 h40b59 h40b60 h40b70 h40b72 h40b80 h40b84 h40b96 h40b112 no of teeth 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 70 72 80 84 96 112 od 1.670 1.840 2.000 2.170 2.330 2.490 2.650 2.810 2.980 3.140 3.300 3.460 3.620 3.780 3.940 4.100 4.260 4.420 4.580 4.740 4.900 5.060 5.220 5.380 5.540 5.700 5.860 6.020 6.180 6.330 6.490 6.650 6.810 6.970 7.130 7.290 7.450 7.610 7.770 7.930 8.090 8.250 8.410 8.570 8.730 8.890 9.040 9.200 9.360 9.520 9.680 9.840 11.430 11.750 13.030 13.660 15.570 18.120 l 7/8
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no 50 stock sprockets 5/8 pitch type b type b type c double type b no of teeth 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 30 32 35 36 40 42 45 48 52 54 60 68 72 76 84 95 96 102 112 double type b od 2.500 2.710 2.910 3.110 3.320 3.520 3.720 3.920 4.120 4.320 4.520 4.720 4.920 5.120 5.320 5.520 6.320 6.720 7.320 7.520 8.320 8.720 9.310 9.910 10.710 11.110 12.300 13.890 14.690 15.490 17.080 19.270 19.470 20.660 22.650 pd 2.219 2.415 2.612 2.809 3.006 3.204 3.401 3.599 3.797 3.995 4.194 4.392 4.590 4.788 4.987 5.185 5.979 6.376 6.972 7.171 7.966 8.363 8.960 9.556 10.351 10.749 11.942 13.533 14.329 15.124 16.715 18.903 19.102 20.295 22.285 part no hd50b11 hd50b12 hd50b13 hd50b14 hd50b15 hd50b16 hd50b17 hd50b18 hd50b19 hd50b20 hd50b21 hd50b22 hd50b23 hd50b24 hd50b25 hd50b26 hd50b30 hd50b32 hd50b35 hd50b36 hd50b40 hd50b42 hd50b45 hd50b48 hd50b52 hd50b54 hd50b60 hd50b68 hd50b72 hd50b76 hd50b84 hd50b95 hd50b96 hd50b102 hd50b112 type bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbd min 5/8 5/8 5/8 5/8
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stock sprockets 1 pitch no 80 single type b no of teeth 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 d min max 1 1 1 1-5/16 1 1-1/2 1 1-5/8 1 1-7/8 1 2 1 2-1/4 1 2-1/2 1 2-3/4 1 2-3/4 1 2-3/4 1 2-3/4 1 2-3/4 1 2-3/4 1 2-3/4 1 2-3/4 1 2-3/4 1 2-3/4 1-1/4 3-1/4 1-1/4 3-1/4 1-1/4 3-1/4 1-3/16 3-1/4 1-3/16 3-1/4 1-3/16 3-1/4 1-3/16 3-1/4 1-3/16 3-1/4 1-3/16 3-1/4 1-3/16 3-1/4 1-3/16 3-1/4 type b type b part no h80b8 h80b9 h80b10 h80b11 h80b12 h80b13 h80b14 h80b15 h80b16 h80b17 h80b18 h80b19 h80b20 h80b21 h80b22 h80b23 h80b24 h80b25 h80b26 h80b27 h80b28 h80b29 h80b30 h80b31 h80b32 h80b33 h80b34 h80b35 h80b36 od 3.010 3.350 3.680 4.010 4.330 4.660 4.980 5.300 5.630 5.950 6.270 6.590 6.910 7.240 7.560 7.880 8.200 8.520 8.840 9.160 9.480 9.800 10.110 10.430 10.750 11.070 11.390 11.710 12.030 pd 2.613 2.924 3.236 3.550 3.864 4.179 4.494 4.810 5.126 5.442 5.759 6.076 6.392 6.710 7.027 7.344 7.661 7.979 8.296 8.614 8.931 9.249 9.567 9.884 10.202 10.520 10.8
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no 120 stock sprockets 1-1/2 pitch type b type c double type b c no of teeth 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 30 35 45 60 part no hd120b11 hd120b12 hd120b13 hd120b14 hd120b15 hd120b16 hd120b17 hd120b18 hd120b19 hd120b20 hd120b21 hd120b22 hd120b23 hd120b24 hd120b25 hd120b26 hd120b30 hd120c35 hd120c45 hd120c60 od 6.010 6.500 6.990 7.470 7.960 8.440 8.920 9.410 9.890 10.370 10.850 11.330 11.810 12.290 12.770 13.250 15.170 17.570 22.350 29.520 pd 5.325 5.796 6.269 6.741 7.215 7.689 8.163 8.639 9.114 9.588 10.065 10.541 11.016 11.492 11.969 12.444 14.351 16.734 21.504 28.661 type bbbbbbbbbbbbbbbbbcccd min 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 max 2-3/8 2-3/4 3 3-5/16 3-1/2 3-1/2 3-1/2 3-1/2 3-1/2 3-1/2 3-1/2 3-13/16 4-1/2 4-1/2 4-1/2 4-1/2 4-1/2 5-3/8 5-3/8 6-3/8 hd 3-9/16 4-1/16 4-1/2 5 5-1/4 5-1/4 5-1/4 5-1/4 5-1/4 5-1/2 5-1/2 5-3/4 6-1/2 6-1/2 6-1/2 6-1/2 6-1/2 7-1/2 7-1/2 9-1/2 l 3-3/4 3-3/
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no 200 stock sprockets 2-1/2 pitch type a type b type c single type a b c no of teeth 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 28 30 32 35 40 45 54 60 od 9.200 10.020 10.830 11.640 12.460 13.260 14.070 14.870 15.680 16.480 17.290 18.090 18.890 19.690 20.490 21.290 22.090 23.690 25.290 26.880 29.280 33.270 37.250 44.420 49.200 pd 8.090 8.875 9.660 10.447 11.235 12.025 12.815 13.605 14.397 15.190 15.980 16.775 17.567 18.360 19.153 19.947 20.740 22.327 23.917 25.505 27.890 31.865 35.840 42.995 47.768 part no h200a10 h200a11 h200a12 h200a13 h200a14 h200a15 h200a16 h200a17 h200a18 h200a19 h200a20 h200a21 h200a22 h200a23 h200a24 h200a25 h200a26 h200a28 h200a30 h200a32 h200a35 h200a40 h200a45 h200a54 h200a60 type aaaaaaaaaaaaaaaaaaaaaaaaad 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 app wt lbs 18.0 21.0 25.0 30.0 34.0 40.0 46.0 51.0 57.0 63.0 70.0 78.0 85.0 93.0 102.0 111.0 12
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q-bushed sprockets 1/2 pitch no 40 type c type b double q-bushed no of teeth 36 40 42 45 48 52 54 60 68 72 76 84 95 102 112 part no d40sk36 d40sk40 d40sk42 d40sk45 d40sk48 d40sk52 d40sk54 d40sk60 d40sf68 d40sf72 d40sf76 d40sf84 d40sf95 d40sf102 d40sf112 type ccccccccccccccc bushing sk sk sk sk sk sk sk sk sf sf sf sf sf sf sf od 6.020 6.650 6.970 7.450 7.930 8.570 8.890 9.840 11.120 11.750 12.390 13.660 15.410 16.530 18.120 pd 5.737 6.373 6.691 7.168 7.645 8.281 8.599 9.554 10.826 11.463 12.099 13.372 15.122 16.236 17.828 max bore d 2-5/8 2-5/8 2-5/8 2-5/8 2-5/8 2-5/8 2-5/8 2-5/8 2-15/16 2-15/16 2-15/16 2-15/16 2-15/16 2-15/16 2-15/16 l1 2-1/8 2-1/8 2-1/8 2-1/8 2-1/8 2-1/8 2-1/8 2-1/8 2-1/4 2-1/4 2-1/4 2-1/4 2-1/4 2-1/4 2-1/4 l2 2-1/8 2-1/8 2-1/8 2-1/8 2-1/8 2-1/8 2-1/8 2-1/8 2-1/4 2-1/4 2-1/4 2-1/4 2-1/4 2-1/4 2-1/4 hd 3-7/8 3-7/8 3-7/8 3-7/8 3-7/8 3-7/8 3-7/8 3-7/8 4-5/8 4-5/8 4-5/8 4-5/8 4-5/8 4-5/8 4-5/8 a 5/8 5/8 5/8 5/8 5/8 5/8 5/8 5/8 3/4 3/4 3/4 3/4 3/4 3/4 3/4 c 13/32 13/32 13
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no 100 q-bushed sprockets 1-1/4 pitch type b type b1 type c single q-bushed no of teeth 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 30 32 35 36 40 42 45 48 54 60 70 72 80 84 max part no h100sds11 h100sds12 h100sk13 h100sk14 h100sf15 h100sf16 h100sf17 h100e18 h100e19 h100e20 h100e21 h100e22 h100e23 h100e24 h100e25 h100e26 h100e27 h100e28 h100e30 h100e32 h100e35 h100e36 h100e40 h100e42 h100e45 h100e48 h100e54 h100e60 h100f70 h100f72 h100f80 h100f84 type bbbbbbbb1 b1 b1 b1 b1 b1 b1 b1 b1 b1 b1 b1 b1 b1 b1 b1 b1 b1 b1 cccccc bushing sds sds sk sk sf sf sf eeeeeeeeeeeeeeeeeeeeeffff od 5.010 5.420 5.820 6.230 6.630 7.030 7.440 7.840 8.240 8.640 9.040 9.440 9.840 10.250 10.650 11.050 11.440 11.840 12.640 13.440 14.640 15.040 16.630 17.430 18.630 19.820 22.210 24.600 28.580 29.380 32.570 34.160 pd 4.437 4.830 5.223 5.617 6.012 6.407 6.803 7.198 7.595 7.991 8.387 8.783 9.180 9.577 9.973 10.370 10.767 11.164 11.958 12.753 13.945 14.342 15.932 16.727 17.920 19.112 21.498 23.884 27.862 2
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split-taper-bushed sprockets 3/8 pitch single split-taper-bushed no of teeth 15 16 17 18 19 19 20 21 22 23 24 25 26 28 30 32 35 36 40 42 45 48 54 60 70 72 80 84 96 112 max part no h35g15 h35g16 h35g17 h35g18 h35g19 h35h19 h35h20 h35h21 h35h22 h35h23 h35h24 h35h25 h35h26 h35h28 h35h30 h35h32 h35h35 h35h36 h35h40 h35h42 h35h45 h35h48 h35h54 h35h60 h35h70 h35h72 h35h80 h35h84 h35h96 h35h112 bushing ggggghhhhhhhhhhhhhhhhhhhhhhhhh od 1.990 2.100 2.230 2.350 2.470 2.470 2.590 2.700 2.830 2.950 3.050 3.190 3.310 3.550 3.790 4.030 4.390 4.510 4.990 5.230 5.590 5.950 6.660 7.380 8.580 8.810 9.770 10.250 11.680 13.590 pd 1.804 1.922 2.041 2.159 2.278 2.278 2.397 2.516 2.635 2.754 2.873 2.992 3.111 3.349 3.588 3.826 4.183 4.303 4.780 5.018 5.379 5.734 6.449 7.165 8.358 8.597 9.552 10.029 11.461 13.371 bore d 1 1 1 1 1 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 type b3 b3 b3 b3 b3 b3 b3 b3 b3
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no 140 single split-taper-bushed no of teeth 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 30 35 36 36 40 40 45 48 54 60 70 80 part no h140q11 h140q12 h140r13 h140r14 h140r15 h140r16 h140r17 h140r18 h140r19 h140r20 h140r21 h140r22 h140r23 h140r24 h140r25 h140r26 h140r30 h140r35 h140r36 h140s36 h140r40 h140s40 h140s45 h140s48 h140s54 h140s60 h140s70 h140s80 bushing q1 q1 r1 r1 r1 r1 r1 r1 r1 r1 r1 r1 r1 r1 r1 r1 r2 r2 r2 s1 r2 s1 s1 s2 s2 s2 s2 s2 od 7.010 7.580 8.150 8.720 9.280 9.850 10.410 10.970 11.540 12.100 12.660 13.220 13.780 14.340 14.900 15.460 17.700 20.490 21.050 21.050 23.290 23.290 26.080 27.750 31.100 34.440 40.020 45.590 pd 6.212 6.762 7.313 7.864 8.417 8.970 9.524 10.078 10.632 11.187 11.742 12.297 12.852 13.407 13.963 14.513 16.742 19.523 20.079 20.079 22.305 22.305 25.087 26.757 30.097 33.438 39.006 44.575 max bore d 2-11/16 2-11/16 3-3/4 3-3/4 3-3/4 3-3/4 3-3/4 3-3/4 3-3/4 3-3/4 3-3/4 3-3/4 3-3/4 3-3/4 3-3/4 3-3/4 3-5/8 3-5/8 3-5/8 4-1/4 3-5/8 4-1/4 4-1/4 4-3/16 4-
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