F.N. Sheppard & Co. | Belting specialist
F.N. Sheppard & Co. | Belting specialist
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Timing Pulleys and Drive Design Chart



Here's another way F. N. Sheppard can help solve your production problems - with a wide array of pulleys and hardware, including standard and custom sizes. Just as having the right belts are important, it's just as essential to have the right pulleys and hardware.




General Information  · Drive Design Chart  · Note

General Information

Pulleys

  • Pulley Bar Stock
  • Bored Sizes
  • Custom Sizes, Machining and Treating - FDA/USDA
  • Aluminum, Steel, Cast Iron, Stainless Steel, Delrin - Depending on pitch and size

Additional Processes

  • Heat Treating
  • Black Oxide
  • Anodizing
  • PTFE Coating

Additional Hardware

  • QD Bushings
  • Taper-Lock Bushings
  • Taper-Lock Sheaves
  • V-Belt Sheaves
  • Flanges

Inch Sizes

MXL /0.080", XL /0.200", L /0.375", H /0.500", XH /0.875"

Metric Sizes

T2.5, T5, T10, T20, AT5, AT10, AT20

HTD® Sizes

3M, 5M, 8M, 14M


Drive Design Chart
No. of
Teeth
INCH PITCH (in.) METRIC PITCH (mm)
XL (0.200") L (0.375") H (0.500") XH (0.875") T5 T10 T20 AT5 AT10 AT20
PD OD PD OD PD OD PD OD PD OD PD OD PD OD PD OD PD OD PD OD
10 0.64 0.62 1.19 1.16 - - - - 15.9 15.1 31.8 30.0 - - 15.9 15.1 31.8 30.0 - -
11 0.70 0.68 1.31 1.28 - - - - 17.5 16.7 35.0 33.2 - - 17.5 16.7 35.0 33.2 - -
12 0.76 0.74 1.43 1.40 - - - - 19.1 18.3 38.2 36.3 - - 19.1 18.3 38.2 36.3 - -
13 0.83 0.81 1.55 1.52 - - - - 20.7 19.9 41.4 39.5 - - 20.7 19.9 41.4 39.5 - -
14 0.89 0.87 1.67 1.64 2.23 2.17 - - 22.3 21.5 44.6 42.7 - - 22.3 21.5 44.6 42.7 - -
15 0.95 0.93 1.79 1.76 2.39 2.33 - - 23.9 23.1 47.7 45.9 95.5 92.6 23.9 23.1 47.7 45.9 - -
16 1.02 1.00 1.91 1.88 2.55 2.49 - - 25.5 24.6 50.9 49.1 101.9 99.0 25.5 24.6 50.9 49.1 - -
17 1.08 1.06 2.03 2.00 2.71 2.65 - - 27.1 26.2 54.1 52.3 108.2 105.4 27.1 26.2 54.1 52.3 - -
18 1.15 1.13 2.15 2.12 2.86 2.81 - - 28.6 27.8 57.3 55.4 114.6 111.7 28.6 27.8 57.3 55.4 114.6 111.7
19 1.21 1.19 2.27 2.24 3.02 2.97 5.29 5.18 30.2 29.4 60.5 58.6 121.0 118.1 30.2 29.4 60.5 58.6 121.0 118.1
20 1.27 1.25 2.39 2.36 3.18 3.13 5.57 5.46 31.8 31.0 63.7 61.8 127.3 124.5 31.8 31.0 63.7 61.8 127.3 124.5
21 1.34 1.32 2.51 2.48 3.34 3.29 5.85 5.74 33.4 32.6 66.8 65.0 133.7 130.8 33.4 32.6 66.8 65.0 133.7 130.8
22 1.40 1.38 2.63 2.60 3.50 3.45 6.13 6.02 35.0 34.2 70.0 68.2 140.1 137.2 35.0 34.2 70.0 68.2 140.1 137.2
23 1.46 1.44 2.75 2.72 3.66 3.61 6.41 6.30 36.6 35.8 73.2 71.4 146.4 143.6 36.6 35.8 73.2 71.4 146.4 143.6
24 1.53 1.51 2.86 2.83 3.82 3.77 6.68 6.57 38.2 37.4 76.4 74.5 152.8 149.9 38.2 37.4 76.4 74.5 152.8 149.9
25 1.59 1.57 2.98 2.95 3.98 3.92 6.96 6.85 39.8 39.0 79.6 77.7 159.2 156.3 39.8 39.0 79.6 77.7 159.2 156.3
26 1.66 1.64 3.10 3.07 4.14 4.08 7.24 7.13 41.4 40.6 82.8 80.9 165.5 162.7 41.4 40.6 82.8 80.9 165.5 162.7
27 1.72 1.70 3.22 3.19 4.30 4.24 7.52 7.41 43.0 42.2 85.9 84.1 171.9 169.0 43.0 42.2 85.9 84.1 171.9 169.0
28 1.78 1.76 3.34 3.31 4.46 4.40 7.80 7.69 44.6 43.7 89.1 87.3 178.3 175.4 44.6 43.7 89.1 87.3 178.3 175.4
29 1.85 1.83 3.46 3.43 4.62 4.56 8.08 7.97 46.2 45.3 92.3 90.5 184.6 181.8 46.2 45.3 92.3 90.5 184.6 181.8
30 1.91 1.89 3.58 3.55 4.77 4.72 8.36 8.25 47.7 46.9 95.5 93.6 191.0 188.1 47.7 46.9 95.5 93.6 191.0 188.1
32 2.04 2.02 3.82 3.79 5.09 5.04 8.91 8.80 50.9 50.1 101.9 100.0 203.7 200.9 50.9 50.1 101.9 100.0 203.7 200.9
33 2.10 2.08 3.94 3.91 5.25 5.20 9.19 9.08 52.5 51.7 105.0 103.2 210.1 207.2 52.5 51.7 105.0 103.2 210.1 207.2
34 2.16 2.14 4.06 4.03 5.41 5.36 9.47 9.36 54.1 53.3 108.2 106.4 216.5 213.6 54.1 53.3 108.2 106.4 216.5 213.6
35 2.23 2.21 4.18 4.15 5.57 5.52 9.75 9.64 55.7 54.9 111.4 109.6 222.8 220.0 55.7 54.9 111.4 109.6 222.8 220.0
36 2.29 2.27 4.30 4.27 5.73 5.68 10.03 9.92 57.3 56.5 114.6 112.7 229.2 226.3 57.3 56.5 114.6 112.7 229.2 226.3
37 2.36 2.34 4.42 4.39 5.89 5.83 10.31 10.20 58.9 58.1 117.8 115.9 235.5 232.7 58.9 58.1 117.8 115.9 235.5 232.7
38 2.42 2.40 4.54 4.51 6.05 5.99 10.58 10.47 60.5 59.7 121.0 119.1 241.9 239.1 60.5 59.7 121.0 119.1 241.9 239.1
39 2.48 2.46 4.66 4.63 6.21 6.15 10.86 10.75 62.1 61.3 124.1 122.3 248.3 245.4 62.1 61.3 124.1 122.3 248.3 245.4
40 2.55 2.53 4.77 4.74 6.37 6.31 11.14 11.03 63.7 62.8 127.3 125.5 254.6 251.8 63.7 62.8 127.3 125.5 254.6 251.8
41 2.61 2.59 4.89 4.86 6.53 6.47 11.42 11.31 65.3 64.4 130.5 128.7 261.0 258.2 65.3 64.4 130.5 128.7 261.0 258.2
42 2.67 2.65 5.01 4.98 6.68 6.63 11.70 11.59 66.8 66.0 133.7 131.8 267.4 264.5 66.8 66.0 133.7 131.8 267.4 264.5
43 2.74 2.72 5.13 5.10 6.84 6.79 11.98 11.87 68.4 67.6 136.9 135.0 273.7 270.9 68.4 67.6 136.9 135.0 273.7 270.9
44 2.80 2.78 5.25 5.22 7.00 6.95 12.25 12.14 70.0 69.2 140.1 138.2 280.1 277.3 70.0 69.2 140.1 138.2 280.1 277.3
45 2.86 2.84 5.37 5.34 7.16 7.11 12.53 12.42 71.6 70.8 143.2 141.4 286.5 283.6 71.6 70.8 143.2 141.4 286.5 283.6
46 2.93 2.91 5.49 5.46 7.32 7.27 12.81 12.70 73.2 72.4 146.4 144.6 292.8 290.0 73.2 72.4 146.4 144.6 292.8 290.0
48 3.06 3.04 5.73 5.70 7.64 7.59 13.37 13.26 76.4 75.6 152.8 150.9 305.6 302.7 76.4 75.6 152.8 150.9 305.6 302.7
50 3.18 3.16 5.97 5.94 7.96 7.90 13.93 13.82 79.6 78.8 159.2 157.3 318.3 315.4 79.6 78.8 159.2 157.3 318.3 315.4
56 3.57 3.55 6.68 6.65 8.91 8.86 15.60 15.49 89.1 88.3 178.3 176.4 356.5 353.6 89.1 88.3 178.3 176.4 356.5 353.6
60 3.82 3.80 7.16 7.13 9.55 9.50 16.71 16.60 95.5 94.7 191.0 189.1 382.0 379.1 95.5 94.7 191.0 189.1 382.0 379.1
64 4.07 4.05 7.64 7.61 10.19 10.13 17.83 17.72 101.9 101.0 203.7 201.9 407.4 404.6 101.9 101.0 203.7 201.9 407.4 404.6
72 4.58 4.56 8.59 8.56 11.46 11.41 20.05 19.94 114.6 113.8 229.2 227.3 458.4 455.5 114.6 113.8 229.2 227.3 458.4 455.5




Note
Many other styles and types are also available.

This chart is a reference for pulley diameters (outside and pitch) for a given number of teeth and a given tooth profile.

Note: Pitch Diameter - Pitch x #Teeth /3.1416



 DOWNLOADS 

Pulley T5 Pitch Sizes
(PDF, 421KB)

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Pulley XL Pitch Sizes
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Pulley Bar Stock XL Pitch Sizes
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Pulley Bar Stock H Pitch Sizes
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Pulley Bar Stock 3M HTD Pitch Sizes
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Pulley Bar Stock 5M HTD Pitch Sizes
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Pulley Bar Stock 8M HTD Pitch Sizes
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