The technical data below lists timing pulley diameters by the number of teeth. 

The data contains ALL possible numbers of teeth for given tooth profiles, Pitch Diameter and O.D. are both listed.

MXL (0.080 Inch Pitch)
# of TeethPitch Diameter (in)Outside Diameter (in)
100.2550.235
110.2800.260
120.3060.286
130.3310.311
140.3570.337
150.3820.362
160.4070.387
170.4330.413
180.4580.438
190.4840.464
200.5090.489
210.5350.515
220.5600.540
230.5860.566
240.6110.591
250.6370.617
260.6620.642
270.6870.667
280.7130.693
290.7380.718
300.7640.744
310.7890.769
320.8150.795
330.8400.820
340.8660.846
350.8910.871
360.9170.897
370.9420.922
380.9680.948
390.9930.973
401.0190.999
411.0441.024
421.0701.050
431.0951.075
441.1201.100
451.1461.126
461.1711.151
471.1971.177
481.2221.202
491.2481.228
501.2731.253
511.2991.279
521.3241.304
531.3501.330
541.3751.355
551.4011.381
561.4261.406
571.4511.431
581.4771.457
591.5021.482
601.5281.508
611.5531.533
621.5791.559
631.6041.584
641.6301.610
651.6551.635
661.6811.661
671.7061.686
681.7311.711
691.7571.737
701.7831.763
711.8081.788
721.8331.813
731.8591.839
741.8841.864
751.9101.890
761.9351.915
771.9611.941
781.9861.966
792.0121.992
802.0372.017
812.0632.043
822.0882.068
832.1142.094
842.1392.119
852.1652.145
862.1902.170
872.2152.195
882.2412.221
892.2662.246
902.2922.272
912.3172.297
922.3432.323
932.3682.348
942.3942.374
952.4192.399
962.4452.425
972.4702.450
982.4962.476
992.5212.501
1002.5462.526
1012.5722.552
1022.5972.577
1032.6232.603
1042.6482.628
1052.6742.654
1062.6992.679
1072.7252.705
1082.7502.730
1092.7762.756
1102.8012.781
1112.8272.807
1122.8522.832
1132.8782.858
1142.9032.883
1152.9282.908
1162.9542.934
1172.9792.959
1183.0052.985
1193.0303.01
1203.0563.036
1213.0813.061
1223.1073.087
1233.1323.112
1243.1583.138
1253.1833.163
1263.2093.189
1273.2343.214
1283.2593.239
1293.2853.265
1303.3103.290
1313.3363.316
1323.3613.341
1333.3873.367
1343.4123.392
1353.4383.418
1363.4633.443
1373.4893.469
1383.5143.494
1393.5403.520
1403.5653.545
1413.5913.571
1423.6163.596
1433.6413.621
1443.6673.647
1453.6923.672
1463.7183.698
1473.7433.723
1483.7693.749
1493.7943.774
1503.8203.800
XL (0.200 Inch Pitch)
# of TeethPitch Diameter (in)Outside Diameter (in)
100.6370.617
110.7000.680
120.7640.744
130.8280.808
140.8910.871
150.9550.935
161.0190.999
171.0821.062
181.1461.126
191.2101.190
201.2731.253
211.3371.317
221.4011.381
231.4641.444
241.5281.508
251.5921.572
261.6551.635
271.7191.699
281.7831.763
291.8461.826
301.9101.890
311.9741.954
322.0372.017
332.1012.081
342.1652.145
352.2282.208
362.2922.272
372.3552.335
382.4192.399
392.4832.463
402.5462.526
412.6102.590
422.6742.654
432.7372.717
442.8012.781
452.8652.845
462.9282.908
472.9922.972
483.0563.036
493.1193.099
503.1833.163
513.2473.227
523.3103.290
533.3743.354
543.4383.418
553.5013.481
563.5653.545
573.6293.609
583.6923.672
593.7563.736
603.8203.800
613.8833.863
623.9473.927
634.0113.991
644.0744.054
654.1384.118
664.2024.182
674.2654.245
684.3294.309
694.3934.373
704.4564.456
714.5204.500
724.5844.564
734.6474.627
744.7114.691
754.7754.755
764.8384.818
774.9024.882
784.9664.946
795.0295.029
805.0935.073
815.1575.137
825.2205.200
835.2845.264
845.3485.328
855.4115.391
865.4755.455
875.5395.519
885.6025.582
895.6665.646
905.7305.710
915.7935.773
925.8575.837
935.9215.901
945.9845.964
956.0486.028
966.1126.092
976.1756.155
986.2396.219
996.3036.283
1006.3666.346
1016.4306.410
1026.4946.474
1036.5576.537
1046.6216.601
1056.6856.665
1066.7486.728
1076.8126.792
1086.8756.855
1096.9396.919
1107.0036.983
1117.0667.046
1127.1307.110
1137.1947.174
1147.2577.237
1157.3217.301
1167.3857.365
1177.4487.428
1187.5127.492
1197.5767.556
1207.6397.619
L (0.375 Inch Pitch)
# of TeethPitch Diameter (in)Outside Diameter (in)
101.1941.164
111.3131.283
121.4321.402
131.5521.522
141.6711.641
151.7901.760
161.9101.880
172.0291.999
182.1492.119
192.2682.238
202.3872.357
212.5072.477
222.6262.596
232.7452.715
242.8652.835
252.9842.954
263.1043.074
273.2233.193
283.3423.312
293.4623.432
303.5813.551
313.7003.670
323.8203.790
333.9393.909
344.0584.028
354.1784.148
364.2974.267
374.4174.387
384.5364.506
394.6554.625
404.7754.745
414.8944.864
425.0134.983
435.1335.103
445.2525.222
455.3715.341
465.4915.461
475.6105.580
485.7305.700
495.8495.819
505.9685.938
516.0886.058
526.2076.177
536.3266.296
546.4466.416
556.5656.535
566.6846.654
576.8046.774
586.9236.893
597.0437.013
607.1627.132
617.2817.251
627.4017.371
637.5207.490
647.6397.609
657.7597.729
667.8787.848
677.9987.968
688.1178.087
698.2368.206
708.3568.326
718.4758.445
728.5948.564
738.7148.684
748.8338.803
758.9528.922
769.0729.042
779.1919.161
789.3119.281
799.4309.400
809.5499.519
819.6699.639
829.7889.758
839.9079.877
8410.0279.997
8510.14610.116
8610.26510.235
8710.38510.355
8810.50410.474
8910.62410.594
9010.74310.713
9110.86210.832
9210.98210.952
9311.10111.071
9411.2211.190
9511.34011.310
9611.45911.429
9711.57911.549
9811.69811.668
9911.81711.787
10011.93711.907
10112.05612.026
10212.17512.145
10312.29512.265
10412.41412.384
10512.53312.503
10612.65312.623
10712.77212.742
10812.89212.862
10913.01112.981
11013.1313.100
11113.25013.220
11213.36913.339
11313.48813.458
11413.60813.578
11513.72713.697
11613.84613.816
11713.96613.936
11814.08514.055
11914.20514.175
12014.32414.294
13015.51815.488
14016.71116.681
15017.90517.875
H (0.500 Inch Pitch)
# of TeethPitch Diameter (in)Outside Diameter (in)
142.2282.174
152.3872.333
162.5462.492
172.7062.652
182.8652.811
193.0242.970
203.1833.129
213.3423.288
223.5013.447
233.6613.607
243.8203.766
253.9793.925
264.1384.084
274.2974.243
284.4564.402
294.6154.561
304.7754.721
314.9344.880
325.0935.039
335.2525.198
345.4115.357
355.5705.516
365.7305.676
375.8895.835
386.0485.994
396.2076.153
406.3666.312
416.5256.471
426.6846.630
436.8446.790
447.0036.949
457.1627.108
467.3217.267
477.4807.426
487.6397.585
497.7997.745
507.9587.904
518.1178.063
528.2768.222
538.4358.381
548.5948.540
558.7538.699
568.9138.859
579.0729.018
589.2319.177
599.3909.336
609.5499.495
619.7089.654
629.8689.814
6310.0279.973
6410.18610.132
6510.34510.291
6610.50410.450
6710.66310.609
6810.82210.768
6910.98210.928
7011.14111.087
7111.30011.246
7211.45911.405
7311.61811.564
7411.77711.723
7511.93711.883
7612.09612.042
7712.25512.201
7812.41412.36
7912.57312.519
8012.73212.678
8112.89112.837
8213.05112.997
8313.2113.156
8413.36913.315
8513.52813.474
8613.68713.633
8713.84613.792
8814.00613.952
8914.16514.111
9014.32414.27
9114.48314.429
9214.64214.588
9314.80114.747
9414.96014.906
9515.12015.066
9615.27915.225
9715.43815.384
9815.59715.543
9915.75615.702
10015.91515.861
10116.07516.021
10216.23416.180
10316.39316.339
10416.55216.498
10516.71116.657
10616.87016.816
10717.02916.975
10817.18917.135
10917.34817.294
11017.50717.453
11117.66617.666
11217.82517.771
11317.98417.930
11418.14418.090
11518.30318.249
11618.46218.408
11718.62118.567
11818.78018.726
11918.93918.885
12019.09919.045
12519.89419.84
13020.69020.636
13521.48621.432
14022.28222.228
14523.07723.023
15023.87323.819
15615624.774
XH (0.875 Inch Pitch)
# of TeethPitch Diameter (in)Outside Diameter (in)
185.0134.903
195.2925.182
205.575.460
215.8495.739
226.1276.017
236.4066.296
246.6856.575
256.9636.853
267.2417.131
277.5207.41
287.7997.689
298.0777.967
308.3568.246
318.6348.524
328.9138.803
339.1919.081
349.4709.360
359.7489.638
3610.0279.917
3710.30510.195
3810.58410.474
3910.86210.752
4011.14111.031
4111.41911.309
4211.69811.588
4311.97611.866
4412.25512.145
4512.53312.423
4612.81212.702
4713.09012.980
4813.36913.259
4913.64813.538
5013.92613.816
5114.20514.095
5214.48314.373
5314.76214.652
5415.04014.930
5515.31915.209
5615.59715.487
5715.87615.766
5816.15416.044
5916.43316.323
6016.71116.601
6116.99016.880
6217.26817.158
6317.54717.437
6417.82517.715
6518.10417.994
6618.38218.272
6718.66118.551
6818.93918.829
6919.21819.108
7019.49619.386
7119.77519.665
7220.05419.944
7320.33220.222
7420.61020.500
7520.88920.779
7621.16821.058
7721.44621.336
7821.72521.615
7922.00321.893
8022.28222.172
8122.56022.450
8222.83922.729
8323.11723.007
8423.39623.286
8523.67423.564
8623.95323.843
8724.23124.121
8824.51024.400
8924.78824.678
9025.06724.957
9125.34525.235
9225.62425.514
9325.90225.792
9426.18126.071
9526.45926.349
9626.73826.628
9727.01726.907
9827.29527.185
9927.57427.464
10027.85227.742
10128.13128.021
10228.40928.299
10328.68828.578
10428.96628.856
10529.24529.135
10629.52329.413
10729.80229.692
10830.08029.970
10930.35930.249
11030.63730.637
11130.91630.806
11231.19431.084
11331.47331.363
11431.75131.641
11532.03031.920
11632.30832.198
11732.58732.477
11832.86532.755
11933.14433.034
12033.42333.313
12233.9833.87
12434.53734.427
12534.81534.705
12635.09434.984
12835.65135.541
13036.20836.098
13236.76536.655
13437.32237.212
13537.60037.490
13637.87937.769
13838.43638.326
14038.99338.883
14239.55039.440
14440.10739.997
14540.38640.276
14640.66440.554
14841.22141.111
15041.77841.668
2mm GT
# of TeethPitch Diameter (in)Outside Diameter (in)
100.2510.231
110.2760.256
120.3010.281
130.3260.306
140.3510.331
150.3760.356
160.4010.381
170.4260.406
180.4510.431
190.4760.456
200.5010.481
210.5260.506
220.5510.531
230.5760.556
240.6020.582
250.6270.607
260.6520.632
270.6770.657
280.7020.682
290.7270.707
300.7520.732
310.7770.757
320.8020.782
330.8270.807
340.8520.832
350.8770.857
360.9020.882
370.9270.907
380.9520.932
390.9770.957
401.0030.983
421.0531.033
441.1031.083
451.1281.108
481.2031.183
491.2281.208
501.2531.233
511.2781.258
521.3031.283
541.3531.333
551.3791.359
561.4041.384
571.4291.409
601.5041.484
621.5541.534
631.5791.559
641.6041.584
651.6291.609
661.6541.634
681.7041.684
701.7541.734
721.8051.785
741.8551.835
751.8801.860
802.0051.985
822.0552.035
842.1052.085
882.2062.186
902.2562.236
962.4062.386
982.4562.436
1002.5062.486
1022.5572.537
1082.7072.687
1102.7572.737
1203.0082.988
1303.2583.238
1403.5093.489
1503.7603.740
3mm GT
TeethPitch DiameterOutside Diameter
English (in)Metric (mm)English (in)Metric (mm)
90.3388.590.3087.83
100.3769.550.3468.79
110.41410.500.3849.74
120.45111.460.42110.70
130.48912.410.45911.65
140.52613.370.49612.61
150.56414.320.53413.56
160.60215.280.57214.52
170.63916.230.60915.47
180.67717.190.64716.43
190.71418.140.68417.38
200.75219.100.72218.34
210.79020.050.76019.29
220.82721.010.79720.25
230.86521.960.83521.20
240.90222.920.87222.16
250.94023.870.91023.11
260.97724.830.94724.07
271.01525.780.98525.02
281.05326.741.02325.98
291.09027.691.06026.93
301.12828.651.09827.89
311.16529.61.13528.84
321.20330.561.17329.80
331.24131.511.21130.75
341.27832.471.24831.71
351.31633.421.28632.66
361.35334.381.32333.62
371.39135.331.36134.57
381.42936.291.39935.53
391.46637.241.43636.48
401.50438.21.47437.44
411.54139.151.51138.39
421.57940.111.54939.35
431.61741.061.58740.30
441.65442.021.62441.26
451.69242.971.66242.21
461.72943.931.69943.17
471.76744.881.73744.12
481.80545.841.77545.08
491.84246.791.81246.03
501.88047.751.85046.99
511.91748.701.88747.94
521.95549.661.92548.90
531.99350.611.96349.85
542.03051.572.00050.81
552.06852.522.03851.76
562.10553.482.07552.72
572.14354.432.11353.67
582.18155.392.15154.63
592.21856.342.18855.58
602.25657.302.22656.54
612.29358.252.26357.49
622.33159.212.30158.45
632.36960.162.33959.40
642.40661.122.37660.36
652.44462.072.41461.31
662.48163.032.45162.27
672.51963.982.48963.22
682.55764.942.52764.18
692.59465.892.56465.13
702.63266.852.60266.09
712.66967.802.63967.04
722.70768.752.67767.99
732.74469.712.71468.95
742.78270.662.75269.90
752.82071.622.79070.86
762.85772.572.82771.81
772.89573.532.86572.77
782.93274.482.90273.72
792.97075.442.94074.68
803.00876.392.97875.63
813.04577.353.01576.59
823.08378.303.05377.54
833.12079.263.09078.50
843.15880.213.1283.128
853.19681.173.16680.41
863.23382.123.20381.36
873.27183.083.24182.32
883.30884.033.27883.27
893.34684.993.31684.23
903.38485.943.35485.18
913.42186.903.39186.14
923.45987.853.42987.09
933.49688.813.46688.05
943.53489.763.50489.00
953.57290.723.54289.96
963.60991.673.57990.91
973.64792.633.61791.87
983.68493.583.65492.82
1003.76095.493.73094.73
1013.79796.453.76795.69
1023.83597.43.80596.64
1033.87298.363.84297.60
1043.91099.313.8898.55
1053.948100.273.91899.51
1063.985101.223.955100.46
1074.023102.183.993101.42
1084.060103.134.030102.37
1094.098104.094.068103.33
1104.136105.044.106104.28
1114.173106.004.143105.24
1124.211106.954.181106.19
1134.248107.914.218107.15
1144.286108.864.256108.10
1154.324109.824.294109.06
1164.361110.774.331110.01
1174.399111.734.369110.97
1184.436112.684.4064.406
1194.474113.644.444112.88
1204.511114.594.481113.83
1214.549115.554.519114.79
1224.587116.54.557115.74
1234.624117.464.594116.70
1244.662118.414.632117.65
1254.699119.374.669118.61
1264.737120.324.707119.56
1274.775121.284.745120.52
1284.812122.234.782121.47
1294.850123.194.820122.43
1304.887124.144.857123.38
1314.925125.104.895124.34
1324.963126.054.933125.29
1335.000127.014.970126.25
1345.038127.965.008127.20
1355.075128.925.045128.16
1365.113129.875.083129.11
1375.151130.835.121130.07
1385.188131.785.158131.02
1395.226132.745.196131.98
1405.263133.695.233132.93
1415.301134.655.271133.89
1425.339135.605.309134.84
1435.376136.555.346135.79
1445.414137.515.384136.75
1455.451138.465.421137.70
1465.489139.425.459138.66
1475.527140.375.497139.61
1485.564141.335.534140.57
1495.602142.285.572141.52
1505.639143.245.609142.48
1515.677144.195.647143.43
1525.715145.155.685144.39
1535.752146.105.722145.34
1545.790147.065.760146.30
1555.827148.015.797147.25
1565.865148.975.835148.21
1575.903149.925.873149.16
1585.940150.885.910150.12
1595.978151.835.948151.07
1606.015152.795.985152.03
5mm GT
# of TeethPitch DiameterOutside Diameter (in)
English (in)Metric (mm)English (in)Metric (mm)
130.81520.690.77019.55
140.87722.280.83221.14
150.94023.870.89522.73
161.00325.460.95824.32
171.06527.061.02025.92
181.12828.651.08327.51
191.19130.241.14629.10
201.25331.831.20830.69
211.31633.421.27132.28
221.37935.011.33433.87
231.44136.611.39635.47
241.50438.201.45937.06
251.56639.791.52138.65
261.62941.381.58440.24
271.69242.971.64741.83
281.75444.561.70943.42
291.81746.151.77245.01
301.88047.751.83546.61
311.94249.341.89748.20
322.00550.931.96049.79
332.06852.522.02351.38
342.13054.112.08552.97
352.19355.702.14854.56
362.25657.302.21156.16
372.31858.892.27357.75
382.38160.482.33659.34
392.44462.072.39960.93
402.50663.662.46162.52
412.56965.252.52464.11
422.63266.852.58765.71
432.69468.442.64967.30
442.75770.032.71268.89
452.82071.622.77570.48
462.88273.212.83772.07
472.94574.802.90073.66
483.00876.392.96375.25
493.07077.993.02576.85
503.13379.583.08878.44
513.19681.173.15180.03
523.25882.763.21381.62
533.32184.353.27683.21
543.38485.943.33984.80
553.44687.543.40186.40
563.50989.133.46487.99
573.57290.723.52789.58
583.63492.313.58991.17
593.69793.903.652092.76
603.76095.493.71594.35
613.82297.083.77795.94
623.88598.683.84097.54
633.948100.273.90399.13
644.010101.863.965100.72
654.073103.454.028102.31
664.136105.044.091103.90
674.198106.634.153105.49
684.261108.234.216107.09
694.324109.824.279108.68
704.386111.414.341110.27
714.449113.04.404111.86
724.511114.594.466113.45
734.574116.184.529115.04
744.637117.774.592116.63
754.699119.374.654118.23
764.762120.964.717119.82
774.8254.8254.780121.41
784.887124.144.842123.00
794.950125.734.905124.59
805.013127.324.968126.18
815.075128.925.030127.78
825.138130.515.093129.37
835.201132.105.156130.96
845.263133.695.218132.55
855.326135.285.281134.14
865.389136.875.344135.73
875.451138.465.406137.32
885.514140.065.469138.92
895.577141.655.532140.51
905.639143.245.594142.10
915.702144.835.657143.69
925.765146.425.720145.28
935.827148.015.782146.87
945.890149.615.845148.47
955.953151.205.908150.06
966.015152.795.970151.65
976.078154.386.033153.24
986.141155.976.096154.83
996.203157.566.158156.42
1006.266159.156.221158.01
1016.329160.756.284159.61
1026.391162.346.346161.20
1036.454163.936.409162.79
1046.517165.526.472164.38
1056.579167.116.534165.97
1066.642168.706.597167.56
1076.705170.306.660169.16
1086.767171.896.722170.75
1096.830173.486.785172.34
1106.893175.076.848173.93
1116.955176.666.910175.52
1127.018178.256.973177.11
1137.081179.857.036178.71
1147.143181.447.098180.30
1157.206183.037.161181.89
1167.268184.627.223183.48
1177.331186.217.286185.07
1187.394187.807.349186.66
1197.456189.397.411188.25
1207.519190.997.474189.85
1217.582192.587.537191.44
1227.644194.177.599193.03
1237.707195.767.662194.62
1247.770197.357.725196.21
1257.832198.947.787197.80
1267.895200.547.850199.40
1277.958202.137.913200.99
1288.020203.727.975202.58
1298.083205.318.038204.17
1308.146206.908.101205.76
1318.208208.498.163207.35
1328.271210.088.226208.94
1338.334211.688.289210.54
1348.396213.278.351212.13
1358.459214.868.414213.72
1368.522216.458.477215.31
1378.584218.048.539216.90
1388.647219.638.602218.49
1398.710221.238.665220.09
1408.772222.828.727221.68
1418.835224.418.790223.27
1428.898226.008.853224.86
1438.960227.598.915226.45
1449.023229.188.978228.04
1459.086230.779.041229.63
1469.148232.379.103231.23
1479.211233.969.166232.82
1489.274235.559.229234.41
1499.336237.149.291236.00
1509.399238.739.354237.59
1519.462240.329.417239.18
1529.524241.929.479240.78
1539.587243.519.542242.37
1549.650245.109.605243.96
1559.712246.699.667245.55
1569.775248.289.730247.14
1579.838249.879.793248.73
1589.900251.469.855250.32
1599.963253.069.918251.92
16010.026254.659.981253.51