PNS-PAES-303-2000 Engineering Materials Roller Chain and Sprockets Specifications and Applications PDF

PHILIPPINE AGRICULTURAL ENGINEERING STANDARD PAES 303: 2000 Foreword The formulation of this National Standard was initiated by the Agricultural Machinery Testing and Evaluation Center (AMTEC) under the project entitled "Enhancing the Implementation of AFMA Through...

PHILIPPINE AGRICULTURAL ENGINEERING STANDARD PAES 303: 2000 Foreword The formulation of this National Standard was initiated by the Agricultural Machinery Testing and Evaluation Center (AMTEC) under the project entitled "Enhancing the Implementation of AFMA Through Improved Agricultural Engineering Standards" which was funded by the Bureau of Agricultural Research (BAR) of the Department of Agriculture (DA). This Standard was reviewed by the Technical Committee for Study 2 – Development of Standards for Engineering Materials and was circulated to various private and government agencies/organizations concerned for their comments and reactions. These standards were presented to the Philippine Society of Agricultural Engineers (PSAE) and subjected to a public hearing organized by the National Agriculture and Fisheries Council (NAFC). The comments and reactions received during the presentation and public hearing were taken into consideration in the finalization of the standards. This Standard has been technically formulated in accordance with PNS 01:Part 4:1998 – Rules for the Structure and Drafting of Philippine National Standard. It provides specifications and proper application of drives using roller chains and sprockets and does not cover manufacturing specifications. In the preparation of this standard, the following references were considered. Baumeister, Theodore (ed.) 1997. Mark’s handbook for mechanical engineers. 10th Edition. Mc Graw Hill Book Company, USA. Carmichael, C. (ed.) 1950. Kent’s Mechanical engineer’s handbook. Design and production volume. 18th Edition. John Wiley and Sons, Inc., USA. Horton, H. L. (Ed.) 1984. Machinery’s handbook. 23rd Edition. Industrial press inc, New York. ISO 606:1994, Short pitch transmission precision roller chains and chain wheels PHILIPPINE AGRICULTURAL ENGINEERING STANDARD PAES 303:2000 Engineering Materials –Roller Chains and Sprockets for Agricultural Machines – Specifications and Applications 1 Scope This Standard establishes specifications and provides technical information for the proper application roller chains and sprockets for drives in agricultural machinery. 2 Reference The following normative references contains provisions which, through reference in this text, constitute provisions of this Standard: PAES 304:2000, Engineering Materials – Keys and Keyways for Agricultural Machines – Specifications and Applications 3 Application Roller chains are used to transmit power at high torque and low speed without slippage. 4 Definitions 4.1 chain pitch distance between adjacent joint members 4.2 pitch diameter the diameter of the pitch circle that passes through the centers of the link pins as the chain is wrapped on the sprocket 4.3 bottom diameter the diameter of a circle tangent to the curve (called the seating curve) at the bottom of the tooth gap 4.4 caliper diameter for a sprocket with an odd number of teeth, it is the distance from the bottom of the tooth gap to that of the nearest opposite tooth gap NOTE: The caliper diameter is the same as the bottom diameter for a sprocket with an even number of teeth. 4.5 PAES 303:2000 outside diameter it is the diameter over the tips of the teeth 5 Chains 5.1 Nomenclature Figure 1 shows the type of chain according number of strands, either single strand or multiple-strand. Figure 2 shows the designation of dimensions of chains. Dimensions of chains are given in Table 1. Figure 3 shows the different types of links. Single-strand Multiple-strand Figure 1 – Types of chains Roller width Roller diam. Pitch Figure 2 – Designation of dimensions of chains C-38  PAES 303:2000 Inner plate Roller Roller Inner plate Bush a) Inner link Outer plate Outer plate Intermediate plates Bearing pins Bearing pins Outer plate Outer plate Simple outer link Duplex outer link b) Outer link for riveting Outer plate Fixed connecting pin Outer plate Fixed connecting pin Detachable plate Spring fastener Detachable plate Split pin fastener Split pin fastener Connecting link with spring fastener Connecting link with spring fastener c) Outer links for riveting Cranked plate Roller Roller Detachable connecting pin Inner plate Bush Bush Cranked plate Split pin fastener Bearing pin, riveted Cranked plate Double cranked (offset) link Single cranked (offset) link d) Cranked (offset) links Figure 3 – Types of links C-39 PAES 303:2000 Table 1 – Standard roller chain dimensions, mm Max. roller Standard chain number Pitch, P Width, W Pin diameter, Dp diameter, Dr 25 6.35 3.30 3.18 2.30 35 9.53 5.08 4.76 3.58 41 12.70 7.77 6.35 3.58 40 12.70 7.92 7.94 3.96 50 15.88 10.16 9.53 5.08 60 19.05 11.91 12.70 5.94 80 25.40 15.88 15.88 7.92 100 31.75 19.05 19.05 9.53 120 38.10 22.23 25.40 11.10 140 44.45 25.40 25.40 12.70 160 50.80 28.58 31.75 14.27 180 57.15 35.71 35.71 17.45 200 63.50 39.67 38.10 19.84 240 76.20 47.63 47.63 23.80 NOTE: 1) The right-hand figure in the chain number is zero for roller chains of the usual proportions, 1 for a light-weight chain and 5 for a rollerless bushing chain. The numbers to the left -hand figure denotes the number of 1/8 inch (3.175 mm) in the pitch. 2) The letter H following the chain number denotes the heavy series. The hyphenated number 2 suffixed to the chain number denotes a double strand, 3 for triple strand, 4 for quadruple strand and so on. For agricultural purposes, only up to Chain number 120 is used. 5.1 Markings 5.2.1 The following information shall be marked on the chains: 1) Chain number designation. 2) Manufacturer’s name and/or its trademark 5.2.2 The following information shall be marked on the packaging: 1) Chain number designation. 2) Manufacturer’s name, trademark, and address. 6 Sprockets 6.1 Nomenclature Figure 4 shows the designation of dimensions of sprockets. Standard roller chain sprockets and their dimensions are given in Tables 2-9. C-40  PAES 303:2000 Max. Hub & Outside D. Bottom D. Groove D. Pitch D. Bore Caliper Diameter Figure 4 – Designation of dimensions of sprockets Table 2 – Standard roller chain sprocket diameters for chain number 25, mm Pitch Outside Pitch Outside Pitch Outside No. of teeth No. of teeth No. of teeth diameter diameter diameter diameter diameter diameter 11 22.54 25.44 43 86.99 90.57 76 153.66 157.34 12 24.53 27.51 44 89.01 92.60 77 155.68 159.36 13 26.53 29.57 45 91.03 94.62 78 157.70 161.39 14 28.54 31.63 46 93.05 96.64 79 159.72 163.40 15 30.54 33.68 47 95.07 98.67 80 161.74 165.43 16 32.55 35.73 48 97.09 100.69 81 163.76 167.45 17 34.56 37.78 49 99.11 102.72 82 165.78 169.48 18 36.57 39.82 50 101.13 104.74 83 167.81 171.49 19 38.58 41.87 51 103.15 106.76 84 169.83 173.52 20 40.59 43.90 52 105.17 108.79 85 171.85 175.54 21 42.61 45.94 53 107.19 110.81 86 173.87 177.56 22 44.85 47.97 54 109.21 112.83 87 175.89 179.58 23 46.63 50.01 55 111.23 114.86 88 177.91 181.60 24 48.65 52.04 56 113.25 116.88 89 179.93 183.63 25 50.66 54.08 57 115.27 118.90 90 181.95 185.65 26 52.68 56.11 58 117.29 120.93 91 183.97 187.67 27 54.70 58.14 59 119.31 122.96 92 179.64 189.69 28 56.71 60.17 60 121.33 124.97 93 188.01 191.72 29 58.73 62.20 61 123.35 127.00 94 190.03 193.74 30 60.75 64.22 62 125.37 129.02 95 192.06 195.76 31 62.77 66.26 63 127.39 131.04 96 194.08 197.78 32 64.78 68.28 64 129.41 133.07 97 196.10 199.80 33 66.80 70.31 65 131.43 135.09 98 198.12 201.83 34 68.82 72.34 66 133.45 137.12 99 200.14 203.85 35 70.84 74.36 67 135.47 139.13 100 202.16 205.87 36 72.86 76.39 68 137.50 141.16 101 204.18 207.89 37 74.88 78.42 69 139.52 143.18 102 206.20 209.91 38 76.90 80.44 70 141.54 145.21 103 208.22 211.94 39 78.91 82.47 71 143.56 147.22 104 210.24 213.96 40 80.93 84.49 72 145.58 149.25 105 212.26 215.98 41 82.95 86.52 73 147.60 151.27 106 214.29 218.00 42 84.97 88.54 74 149.62 153.30 107 216.31 220.02 75 151.64 155.31 108 218.33 222.05 C-41 PAES 303:2000 Table 3 – Standard roller chain sprocket diameters for chain number 35, mm Pitch Outside Pitch Outside Pitch Outside No. of teeth No. of teeth No. of teeth diameter diameter diameter diameter diameter diameter 11 33.83 38.18 43 130.56 135.93 76 230.61 236.13 12 36.82 41.28 44 133.59 138.97 77 233.64 239.16 13 39.82 44.38 45 136.62 142.01 78 236.68 242.20 14 42.83 47.47 46 139.65 145.04 79 239.71 245.24 15 45.84 50.55 47 142.68 148.08 80 242.74 248.28 16 48.85 53.63 48 145.71 151.12 81 245.77 251.31 17 51.86 56.69 49 148.74 154.16 82 248.81 254.35 18 54.88 59.76 50 151.77 157.20 83 251.84 257.38 19 57.90 62.83 51 154.81 160.23 84 254.87 260.42 20 60.92 65.89 52 157.84 163.27 85 257.91 263.45 21 63.94 68.95 53 160.87 166.31 86 260.94 266.48 22 67.31 72.00 54 163.90 169.34 87 263.97 269.52 23 69.99 75.06 55 166.93 172.38 88 267.00 272.55 24 73.01 78.11 56 169.96 175.42 89 270.04 275.59 25 76.04 81.16 57 173.00 178.45 90 273.07 278.62 26 79.06 84.21 58 176.03 181.49 91 276.10 281.66 27 82.09 87.26 59 179.06 184.53 92 269.61 284.69 28 85.12 90.30 60 182.09 187.56 93 282.17 287.73 29 88.14 93.35 61 185.13 190.60 94 285.20 290.76 30 91.17 96.39 62 188.16 193.63 95 288.23 293.79 31 94.20 99.44 63 191.19 196.67 96 291.27 296.83 32 97.23 102.48 64 194.22 199.71 97 294.30 299.86 33 100.26 105.53 65 197.25 202.74 98 297.33 302.90 34 103.29 108.57 66 200.29 205.78 99 300.37 305.93 35 106.31 111.61 67 203.32 208.81 100 303.40 308.97 36 109.34 114.65 68 206.35 211.85 101 306.43 312.00 37 112.37 117.69 69 209.38 214.88 102 309.46 315.03 38 115.40 120.73 70 212.42 217.92 103 312.50 318.07 39 118.43 123.77 71 215.45 220.95 104 315.53 321.10 40 121.46 126.81 72 218.48 223.99 105 318.56 324.14 41 124.50 129.85 73 221.51 227.02 106 321.60 327.17 42 127.53 132.89 74 224.55 230.06 107 324.63 330.20 75 227.58 233.09 108 327.66 333.25 C-42  PAES 303:2000 Table 4 – Standard roller chain sprocket diameters for chain number 40 or 41, mm Pitch Outside Pitch Outside Pitch Outside No. of teeth No. of teeth No. of teeth diameter diameter diameter diameter diameter diameter 11 45.08 50.88 43 173.98 181.14 76 307.32 314.68 12 49.07 55.02 44 178.02 185.19 77 311.36 318.72 13 53.07 59.14 45 182.06 189.24 78 315.40 322.77 14 57.07 63.26 46 186.10 193.28 79 319.44 326.81 15 61.08 67.36 47 190.14 197.33 80 323.49 330.86 16 65.10 71.46 48 194.18 201.38 81 327.53 334.90 17 69.12 75.55 49 198.22 205.44 82 331.57 338.95 18 73.14 79.64 50 202.26 209.49 83 335.61 342.99 19 77.16 83.73 51 206.30 213.53 84 339.65 347.04 20 81.18 87.81 52 210.34 217.58 85 343.69 351.08 21 85.21 91.88 53 214.38 221.63 86 347.73 355.12 22 89.70 95.95 54 218.42 225.67 87 351.78 359.17 23 93.27 100.03 55 222.46 229.72 88 355.82 363.21 24 97.30 104.09 56 226.50 233.77 89 359.86 367.26 25 101.33 108.15 57 230.54 237.81 90 363.90 371.30 26 105.36 112.22 58 234.58 241.86 91 367.94 375.35 27 109.40 116.28 59 238.62 245.91 92 359.29 379.39 28 113.43 120.33 60 242.66 249.95 93 376.03 383.44 29 117.46 124.40 61 246.70 254.00 94 380.07 387.48 30 121.50 128.45 62 250.74 258.04 95 384.11 391.52 31 125.53 132.51 63 254.78 262.09 96 388.15 395.57 32 129.57 136.56 64 258.83 266.14 97 392.20 399.61 33 133.61 140.63 65 262.87 270.18 98 396.24 403.66 34 137.64 144.68 66 266.91 274.23 99 400.28 407.70 35 141.68 148.73 67 270.95 278.27 100 404.32 411.75 36 145.72 152.78 68 274.99 282.32 101 408.36 415.79 37 149.75 156.83 69 279.03 286.36 102 412.40 419.82 38 153.79 160.88 70 283.07 290.41 103 416.45 423.88 39 157.83 164.93 71 287.11 294.45 104 420.49 427.91 40 161.87 168.99 72 291.16 298.50 105 424.53 431.97 41 165.91 173.04 73 295.20 302.54 106 428.57 436.00 42 169.95 177.09 74 299.24 306.59 107 432.61 440.04 75 303.28 310.63 108 436.66 444.09 C-43 PAES 303:2000 Table 5 – Standard roller chain sprocket diameters for chain number 50, mm Pitch Outside Pitch Outside Pitch Outside No. of teeth No. of teeth No. of teeth diameter diameter diameter diameter diameter diameter 11 56.37 63.62 43 217.55 226.50 76 384.27 393.47 12 61.36 68.79 44 222.60 231.56 77 389.32 398.52 13 66.36 73.95 45 227.65 236.63 78 394.38 403.59 14 71.36 79.10 46 232.70 241.68 79 399.43 408.64 15 76.38 84.23 47 237.75 246.74 80 404.48 413.71 16 81.40 89.36 48 242.80 251.81 81 409.54 418.76 17 86.42 94.47 49 247.85 256.87 82 414.59 423.82 18 91.45 99.58 50 252.90 261.94 83 419.64 428.87 19 96.48 104.70 51 257.96 266.99 84 424.70 433.94 20 101.51 109.79 52 263.01 272.06 85 429.75 438.99 21 106.55 114.89 53 268.06 277.12 86 434.81 444.04 22 112.16 119.97 54 273.11 282.17 87 439.86 449.10 23 116.62 125.07 55 278.16 287.24 88 444.91 454.15 24 121.66 130.15 56 283.22 292.30 89 449.97 459.22 25 126.70 135.23 57 288.27 297.35 90 455.02 464.27 26 131.74 140.32 58 293.32 302.42 91 460.07 469.33 27 136.79 145.40 59 298.37 307.48 92 449.25 474.38 28 141.83 150.46 60 303.42 312.53 93 470.18 479.45 29 146.88 155.54 61 308.48 317.60 94 475.24 484.50 30 151.92 160.61 62 313.53 322.65 95 480.29 489.55 31 156.97 165.69 63 318.58 327.72 96 485.34 494.61 32 162.01 170.76 64 323.63 332.78 97 490.40 499.66 33 167.06 175.84 65 328.69 337.83 98 495.45 504.73 34 172.11 180.90 66 333.74 342.90 99 500.51 509.78 35 177.15 185.97 67 338.79 347.95 100 505.56 514.85 36 182.20 191.04 68 343.85 353.01 101 510.61 519.90 37 187.25 196.10 69 348.90 358.06 102 515.67 524.95 38 192.30 201.17 70 353.95 363.13 103 520.72 530.01 39 197.35 206.23 71 359.01 368.18 104 525.78 535.06 40 202.40 211.30 72 364.06 373.24 105 530.83 540.13 41 207.45 216.37 73 369.11 378.29 106 535.88 545.18 42 212.50 221.43 74 374.16 383.36 107 540.94 550.23 75 379.22 388.41 108 545.99 555.29 C-44  PAES 303:2000 Table 6 – Standard roller chain sprocket diameters for chain number 60, mm Pitch Outside Pitch Outside Pitch Outside No. of teeth No. of teeth No. of teeth diameter diameter diameter diameter diameter diameter 11 67.62 76.31 43 260.98 271.71 76 460.98 472.02 12 73.60 82.52 44 267.03 277.79 77 467.04 478.08 13 79.60 88.72 45 273.09 283.86 78 473.10 484.16 14 85.61 94.89 46 279.15 289.92 79 479.17 490.21 15 91.62 101.04 47 285.21 296.00 80 485.23 496.29 16 97.65 107.19 48 291.27 302.08 81 491.29 502.35 17 103.67 113.33 49 297.33 308.15 82 497.35 508.43 18 109.71 119.46 50 303.39 314.23 83 503.42 514.48 19 115.74 125.60 51 309.45 320.29 84 509.48 520.56 20 121.78 131.71 52 315.51 326.36 85 515.54 526.62 21 127.82 137.83 53 321.57 332.44 86 521.60 532.68 22 134.54 143.92 54 327.63 338.50 87 527.67 538.75 23 139.90 150.04 55 333.69 344.58 88 533.73 544.81 24 145.95 156.13 56 339.75 350.65 89 539.79 550.89 25 151.99 162.23 57 345.81 356.71 90 545.85 556.95 26 158.04 168.33 58 351.87 362.79 91 551.91 563.02 27 164.09 174.42 59 357.93 368.87 92 538.93 569.08 28 170.14 180.50 60 363.99 374.92 93 564.04 575.16 29 176.20 186.59 61 370.06 381.00 94 570.10 581.22 30 182.25 192.67 62 376.12 387.06 95 576.17 587.27 31 188.30 198.77 63 382.18 393.13 96 582.23 593.35 32 194.35 204.84 64 388.24 399.21 97 588.29 599.41 33 200.41 210.94 65 394.30 405.27 98 594.35 605.49 34 206.46 217.02 66 400.36 411.35 99 600.42 611.54 35 212.52 223.09 67 406.42 417.40 100 606.48 617.62 36 218.57 229.17 68 412.49 423.48 101 612.54 623.68 37 224.63 235.25 69 418.55 429.54 102 618.60 629.74 38 230.69 241.33 70 424.61 435.62 103 624.67 635.81 39 236.74 247.40 71 430.67 441.67 104 630.73 641.87 40 242.80 253.48 72 436.73 447.75 105 636.79 647.95 41 248.86 259.56 73 442.79 453.81 106 642.86 654.01 42 254.92 265.63 74 448.86 459.89 107 648.92 660.06 75 454.92 465.94 108 654.98 666.14 C-45 PAES 303:2000 Table 7 – Standard roller chain sprocket diameters for chain number 80, mm Pitch Outside Pitch Outside Pitch Outside No. of teeth No. of teeth No. of teeth diameter diameter diameter diameter diameter diameter 11 90.16 101.75 43 347.97 362.28 76 614.64 629.36 12 98.14 110.03 44 356.04 370.38 77 622.72 637.44 13 106.14 118.29 45 364.12 378.49 78 630.81 645.54 14 114.15 126.52 46 372.20 386.56 79 638.89 653.62 15 122.17 134.72 47 380.28 394.67 80 646.97 661.72 16 130.20 142.93 48 388.36 402.77 81 655.06 669.80 17 138.23 151.10 49 396.44 410.87 82 663.14 677.90 18 146.27 159.28 50 404.52 418.97 83 671.22 685.98 19 154.32 167.46 51 412.60 427.05 84 679.31 694.08 20 162.37 175.62 52 420.68 435.15 85 687.39 702.16 21 170.42 183.77 53 428.76 443.26 86 695.47 710.23 22 179.39 191.90 54 436.84 451.33 87 703.55 718.34 23 186.54 200.05 55 444.92 459.44 88 711.64 726.41 24 194.60 208.18 56 453.00 467.54 89 719.72 734.52 25 202.66 216.31 57 461.08 475.62 90 727.80 742.59 26 210.72 224.43 58 469.16 483.72 91 735.89 750.70 27 218.79 232.56 59 477.25 491.82 92 718.57 758.77 28 226.86 240.67 60 485.33 499.90 93 752.05 766.88 29 234.93 248.79 61 493.41 508.00 94 760.14 774.95 30 243.00 256.90 62 501.49 516.08 95 768.22 783.03 31 251.07 265.02 63 509.57 524.18 96 776.31 791.13 32 259.14 273.13 64 517.65 532.28 97 784.39 799.21 33 267.21 281.25 65 525.73 540.36 98 792.47 807.31 34 275.28 289.36 66 533.82 548.46 99 800.56 815.39 35 283.36 297.46 67 541.90 556.54 100 808.64 823.49 36 291.43 305.56 68 549.98 564.64 101 816.72 831.57 37 299.51 313.66 69 558.06 572.72 102 824.81 839.65 38 307.58 321.77 70 566.15 580.82 103 832.89 847.75 39 315.66 329.87 71 574.23 588.90 104 840.98 855.83 40 323.74 337.97 72 582.31 597.00 105 849.06 863.93 41 331.81 346.08 73 590.39 605.08 106 857.14 872.01 42 339.89 354.18 74 598.47 613.18 107 865.23 880.08 75 606.56 621.26 108 873.31 888.19 C-46  PAES 303:2000 Table 8 – Standard roller chain sprocket diameters for chain number 100, mm Pitch Outside Pitch Outside Pitch Outside No. of teeth No. of teeth No. of teeth diameter diameter diameter diameter diameter diameter 11 112.70 127.19 43 434.96 452.85 76 768.30 786.70 12 122.67 137.54 44 445.06 462.98 77 778.40 796.80 13 132.67 147.86 45 455.15 473.11 78 788.51 806.93 14 142.68 158.15 46 465.25 483.20 79 798.61 817.02 15 152.71 168.40 47 475.35 493.33 80 808.71 827.15 16 162.74 178.66 48 485.45 503.46 81 818.82 837.25 17 172.79 188.88 49 495.55 513.59 82 828.92 847.38 18 182.84 199.10 50 505.65 523.72 83 839.03 857.47 19 192.90 209.33 51 515.75 533.81 84 849.13 867.60 20 202.96 219.52 52 525.85 543.94 85 859.23 877.70 21 213.03 229.71 53 535.95 554.07 86 869.34 887.79 22 224.24 239.87 54 546.05 564.17 87 879.44 897.92 23 233.17 250.06 55 556.15 574.29 88 889.55 908.02 24 243.25 260.22 56 566.25 584.42 89 899.65 918.15 25 253.32 270.38 57 576.35 594.52 90 909.75 928.24 26 263.40 280.54 58 586.45 604.65 91 919.86 938.37 27 273.49 290.70 59 596.56 614.78 92 898.21 948.47 28 283.57 300.83 60 606.66 624.87 93 940.07 958.60 29 293.66 310.99 61 616.76 635.00 94 950.17 968.69 30 303.75 321.12 62 626.86 645.10 95 960.28 978.79 31 313.83 331.28 63 636.96 655.22 96 970.38 988.92 32 323.92 341.41 64 647.07 665.35 97 980.49 999.01 33 334.01 351.57 65 657.17 675.45 98 990.59 1,009.14 34 344.10 361.70 66 667.27 685.58 99 1,000.70 1,019.24 35 354.20 371.82 67 677.37 695.67 100 1,010.80 1,029.37 36 364.29 381.95 68 687.48 705.80 101 1,020.91 1,039.46 37 374.38 392.08 69 697.58 715.90 102 1,031.01 1,049.56 38 384.48 402.21 70 707.68 726.03 103 1,041.11 1,059.69 39 394.57 412.34 71 717.78 736.12 104 1,051.22 1,069.78 40 404.67 422.47 72 727.89 746.25 105 1,061.32 1,079.91 41 414.77 432.59 73 737.99 756.35 106 1,071.43 1,090.01 42 424.86 442.72 74 748.09 766.48 107 1,081.54 1,100.11 75 758.20 776.57 108 1,091.64 1,110.23 C-47 PAES 303:2000 Table 9 – Standard roller chain sprocket diameters for chain number 120, mm Pitch Outside Pitch Outside Pitch Outside No. of teeth No. of teeth No. of teeth diameter diameter diameter diameter diameter diameter 9 111.40 127.56 43 521.95 543.42 76 921.96 944.04 10 123.30 128.63 44 534.07 555.57 77 934.08 956.16 11 135.24 152.63 45 546.18 567.73 78 946.21 968.31 12 147.21 165.05 46 558.30 579.84 79 958.33 980.43 13 159.20 177.43 47 570.42 592.00 80 970.46 992.58 14 171.22 189.78 48 582.54 604.15 81 982.58 1,004.70 15 183.25 202.08 49 594.66 616.31 82 994.71 1,016.85 16 195.29 214.39 50 606.78 628.46 83 1,006.83 1,028.97 17 207.35 226.66 51 618.90 640.58 84 1,018.96 1,041.12 18 219.41 238.93 52 631.02 652.73 85 1,031.08 1,053.24 19 231.48 251.19 53 643.14 664.88 86 1,043.20 1,065.35 20 243.55 263.42 54 655.26 677.00 87 1,055.33 1,077.51 21 255.63 275.65 55 667.38 689.15 88 1,067.46 1,089.62 22 269.09 287.85 56 679.50 701.31 89 1,079.58 1,101.78 23 279.80 300.08 57 691.62 713.42 90 1,091.71 1,113.89 24 291.90 312.27 58 703.75 725.58 91 1,103.83 1,126.05 25 303.99 324.46 59 715.87 737.73 92 1,077.86 1,138.16 26 316.09 336.65 60 727.99 749.85 93 1,128.08 1,150.32 27 328.19 348.84 61 740.11 762.00 94 1,140.21 1,162.43 28 340.29 361.00 62 752.23 774.12 95 1,152.33 1,174.55 29 352.39 373.19 63 764.35 786.27 96 1,164.46 1,186.70 30 364.50 385.34 64 776.48 798.42 97 1,176.59 1,198.82 31 376.60 397.54 65 788.60 810.54 98 1,188.71 1,210.97 32 388.71 409.69 66 800.72 822.69 99 1,200.84 1,223.09 33 400.82 421.88 67 812.85 834.81 100 1,212.96 1,235.24 34 412.92 434.04 68 824.97 846.96 101 1,225.09 1,247.36 35 425.04 446.19 69 837.10 859.08 102 1,237.21 1,259.47 36 437.15 458.34 70 849.22 871.23 103 1,249.34 1,271.63 37 449.26 470.50 71 861.34 883.35 104 1,261.46 1,283.74 38 461.37 482.65 72 873.47 895.50 105 1,273.59 1,295.90 39 473.49 494.80 73 885.59 907.62 106 1,285.71 1,308.01 40 485.60 506.96 74 897.71 919.77 107 1,297.84 1,320.13 41 497.72 519.11 75 909.84 931.89 108 1,309.97 1,332.28 42 509.84 531.27 6.2 Types The following are the different designs or types of roller chain sprockets are shown by sectional views (Figure 5): 1) Type A - plain plate 2) Type B - has a hub on one side only 3) Type C - hub on both sides 4) Type D - detachable hub C-48  PAES 303:2000 Type A - Plain plate Type B - Hub on one side Type C - Hub on both sides Type D - Detachable hub Figure 5 – Types of sprockets 6.3 Materials For large sprockets, cast iron is commonly used, especially in drives with large speed ratios. Smaller sprockets are usually made of steel. The use of stainless steel or bronze are for corrosion resistance while Formica, nylon or other suitable plastic materials are for special conditions. 6.4 Markings 6.4.1 The following information shall be marked on the sprockets: 1) Type of sprocket 2) Number of teeth of the sprocket 3) Corresponding chain number designation. 4) Manufacturer’s name and/or its trademark 6.4.2 The following information shall be marked on the packaging: 1) Type of sprocket 2) Number of teeth of the sprocket 3) Corresponding chain number designation. 4) Manufacturer’s name, trademark, and address 7 Recommended design practices 7.1 Selection of chain and sprockets 7.1.1 The smallest applicable chain number is desirable for quiet operation and higher speed range allowable for chain drives. The power capacity varies with the chain pitch. However, short pitch with high working load can often be obtained by the use of multiple- strand chains. 7.1.2 The small sprocket selected must be large enough to accommodate the shaft. Table 9 gives the maximum bore and hub diameters consistent with commercial practice for sprockets with up to 25 teeth. C-49 PAES 303:2000 7.1.3 After selecting the small sprocket, the number of teeth in the large sprocket is determined by the desired ratio of the shaft speed. Over emphasis on the exactness of the speed ratio may result in cumbersome and expensive installation. In most cases, satisfactory operation can be obtained with a minor change in speed of one or both shafts. Table 10 – Recommended roller chain sprocket maximum bore and hub dimensions Chain number 35 41 or 40 50 60 80 No. of Max. teeth Max hub Max. bore, Max hub Max. bore, Max hub Max. bore, Max hub dia. Max. bore, bore, Max hub dia. (mm) (mm) dia. (mm) (mm) dia. (mm) (mm) (mm) (mm) (mm) dia. (mm) 11 15.08 21.83 19.84 29.77 24.61 37.31 31.75 44.85 41.28 60.33 12 15.88 25.00 22.23 33.73 29.37 42.47 32.54 51.20 45.24 68.66 13 19.05 28.18 25.40 38.10 32.54 47.63 38.10 57.15 50.80 76.60 14 21.43 31.35 29.37 42.07 49.21 52.78 44.45 63.50 57.94 84.93 15 22.23 34.53 31.75 46.04 38.89 57.94 45.24 69.85 61.12 93.27 16 24.61 37.31 32.54 50.40 42.86 63.10 50.01 75.80 69.06 101.20 17 27.78 40.48 34.93 54.37 45.24 68.26 56.36 81.76 71.44 109.54 18 30.96 43.66 38.89 58.34 47.63 73.42 57.94 88.11 79.38 117.87 19 31.75 46.83 42.86 62.31 52.39 78.18 61.91 94.06 84.14 125.81 20 32.54 49.61 45.24 66.68 57.15 83.34 68.26 100.41 88.90 134.14 21 33.34 52.78 45.24 70.64 57.94 88.50 71.44 106.36 95.25 142.08 22 36.51 71.44 49.21 74.61 61.91 93.66 74.61 112.71 98.43 150.42 23 39.69 58.74 53.18 78.58 66.68 98.82 79.38 118.67 106.36 158.35 24 42.86 61.91 57.15 82.95 71.44 103.58 82.55 124.62 115.89 166.69 25 44.45 65.09 57.94 86.92 72.23 108.74 85.73 130.97 119.06 174.63 Chain number 100 120 140 160 180 No. of Max. teeth Max hub Max. bore, Max hub Max. bore, Max hub Max. bore, Max hub dia. Max. bore, bore, Max hub dia. (mm) (mm) dia. (mm) (mm) dia. (mm) (mm) (mm) (mm) (mm) dia. (mm) 11 50.01 75.41 58.74 90.88 71.44 105.97 83.34 121.44 100.01 152.00 12 57.94 85.73 69.85 103.19 82.55 120.65 104.78 137.72 119.86 172.64 13 64.29 96.04 77.79 115.49 90.49 134.94 103.19 154.38 129.38 193.28 14 68.26 106.36 85.73 127.79 98.43 149.23 119.06 170.66 145.26 213.92 15 78.58 116.68 95.25 140.10 112.71 163.91 123.83 187.33 158.75 234.16 16 83.34 127.00 101.60 152.40 119.06 178.20 139.70 203.60 177.80 254.79 17 92.87 137.32 113.51 164.70 128.59 192.48 13.92 219.87 188.91 275.43 18 96.04 147.24 118.27 177.01 142.88 206.77 158.75 236.54 203.20 295.67 19 106.36 157.56 125.41 189.31 144.46 221.06 174.63 252.81 228.60 315.91 20 116.68 167.88 138.11 201.61 158.75 235.35 177.80 269.08 247.65 336.55 21 119.06 177.80 144.46 213.92 173.04 249.63 196.85 285.35 254.00 356.79 22 123.83 188.12 149.23 225.82 184.15 263.92 212.73 301.63 276.23 377.03 23 134.94 198.44 161.93 238.13 188.91 277.81 228.60 317.90 295.28 397.67 24 144.46 208.36 173.04 250.43 203.20 292.10 244.48 572.29 3378.20 417.91 25 163.51 218.68 184.15 262.73 217.49 306.39 260.35 350.44 342.90 438.15 C-50  PAES 303:2000 7.2 Center distance between sprockets 7.2.1 The center to center distance between sprockets, as a general rule, should not be less than 1.5 times the diameter of the larger sprocket and not less than thirty times the pitch nor more than 50 times the pitch. In certain cases, a center distance equivalent to 80 pitches may be considered an approved maximum. The chain should extend around at least 120 degrees of the pinion circumference, and this minimum amount of contact is obtained for all center distances provided the ratio is less than 3.5 to one. 7.2.2 Other things being equal, a longer center distance is recommended. 7.2.3 If possible, the center distance should be adjustable in order to take care of the slack due to elongation from wear and this range of adjustments should be at least one and one-half pitches. 7.2.4 A little slack is desirable as it allows the chain links to take the best position on the sprocket teeth and reduces the wear on the bearings. Too much sag or an excessive distance between the sprockets may cause the chain to whip up and down, a condition detrimental to smooth running and very destructive to the chain. 7.2.5 The sprockets should run in a vertical plane, the sprocket axes being approximately horizontal, unless an idler is used on the slack side to keep the chain in position. The most satisfactory results are obtained when the slack of the chain is on the bottom. 7.3 Center distance for a given length When the distance between the driving and the driven sprockets can be varied to suit the length of the chain, this center distance for tight chain may be determined by the following formula: P⎡ C= 2LP − N − n + (2L − N − n )2 − 0.810(N − n )2 ⎤⎥ ……………………….[Eq. 1] 8 ⎢⎣ ⎦ Where: C = center to center distance in millimeters LP = the length of chain in pitches P = pitch of the chain N = the number of teeth in the large sprocket n = number of teeth in small sprockets NOTE: The length L in pitches should be an even number for roller chain, so that the use of a cranked (offset) connecting link will not be necessary. C-51 PAES 303:2000 7.4 Length of driving chain The total length of a roller chain should be given in multiples of twice the pitch, because the ends must be connected with an outside and inside link. The length of a chain can be calculated accurately enough for ordinary practice by the use of the following formula in which the variables used are defined in the previous equation: N n ⎛ N −n⎞ ⎛ 1 ⎞ 2 LP = 2C P + + + ⎜ ⎟ ⎜⎜ ⎟⎟.……………….……………………….. [Eq. 2] 2 2 ⎝ 2π ⎠ ⎝ CP ⎠ Where: LP = the length of chain in pitches CP = the center to center distance in pitches 7.5 Idler sprockets When sprockets have a fixed center distance or are non-adjustable, it may be advisable to use an idler sprocket for taking up the slack. The idler should preferably be placed against the slack side between the two strands of the chain. When an idler sprocket is applied to the tight side of the chain to reduce vibration, it should be on the lower side and so located that the chain will run on a straight line between the two main sprockets. An idler sprocket will wear excessively if the number of teeth is too small and the speed too high, because there is impact between the teeth and rollers even though the idler carries practically no load. 7.6 Power rating 7.6.1 The power rating of chains may be computed by the equation: Power to be transmitte d × Service factor Design power =..…………...….…..[Eq. 3] Multiple strand factor The power rating, multiple strand factor, and service factors are given in Tables 10 - 17, 18, and 19, respectively. The tables for power rating are divided into four zones (as illustrated by the boundary lines), each zone corresponds to the type of lubrication. C-52  PAES 303:2000 Table 11 – Power ratings for standard single strand roller chain – No. 25, watts No. of Revolutions per minute of small sprocket teeth small 50 100 300 500 700 900 1,200 1,500 1,800 2,100 2,500 3,000 3,500 4,000 4,500 5,000 5,500 6,000 6,500 7,000 7,500 8,000 8,500 9,000 sprocket 11 22 37 104 172 231 291 373 462 544 619 731 858 984 1,029 865 738 641 559 500 447 403 365 336 306 12 22 45 119 186 254 321 410 507 597 686 798 940 1,081 1,171 984 835 723 641 567 507 455 418 380 350 13 30 45 127 201 276 350 447 552 649 746 872 1,029 1,178 1,320 1,111 947 820 716 641 574 515 470 425 395 14 30 52 142 224 298 373 485 597 701 805 947 1,111 1,275 1,439 1,238 1,059 917 805 716 641 574 522 477 440 15 30 52 149 239 321 403 522 641 753 872 1,014 1,201 1,380 1,551 1,372 1,171 1,014 895 790 708 641 582 529 485 16 30 60 164 254 350 433 567 686 813 932 1,089 1,283 1,476 1,663 1,514 1,290 1,119 984 872 783 701 641 582 537 17 37 60 172 276 373 462 604 738 865 992 1,163 1,372 1,573 1,775 1,655 1,417 1,223 1,074 954 850 768 701 641 589 18 37 67 186 291 395 492 641 783 925 1,059 1,,238 1,462 1,678 1,887 1,805 1,544 1,335 1,171 1,037 932 835 761 694 641 19 37 67 194 306 418 522 679 828 977 1,119 1,312 1,544 1,775 2,006 1,954 1,670 1,447 1,,268 1,126 1,007 910 828 753 694 20 45 75 209 328 440 552 716 872 1,029 1,186 1,387 1,633 1,879 2,118 2,110 1,805 1,566 1,372 1,215 1,044 984 895 813 746 21 45 82 216 343 462 582 753 925 1,089 1,253 1,462 1,723 1,984 2,230 2,274 1,939 1,685 1,476 1,312 1,171 1,059 962 872 805 22 45 82 231 358 492 611 798 969 1,141 1,312 1,536 1,812 2,081 2,349 2,438 2,081 1,805 1,581 1,402 1,260 1,133 1,029 940 865 23 45 89 239 380 515 641 835 1,022 1,201 1,380 1,611 1,902 2,185 2,461 2,610 2,222 1,931 1,693 1,499 1,342 1,208 1,096 1,007 925 24 52 97 254 395 537 671 872 1,066 1,260 1,447 1,693 1,991 2,289 2,580 2,781 2,371 2,058 1,805 1,603 1,432 1,290 1,171 1,074 984 25 52 97 261 418 559 701 910 1,119 1,312 1,506 1,767 2,081 2,394 2,692 2,953 2,520 2,185 1,916 1,700 1,521 1,372 1,245 1,141 1,044 26 52 104 276 433 589 731 954 1,163 1,372 1,573 1,842 2,170 2,491 2,811 3,124 2,677 2,319 2,036 1,805 1,618 1,454 1,320 1,208 1,111 28 60 112 298 470 634 798 1,029 1,260 1,484 1,708 1,998 2,349 2,699 3,050 3,385 2,990 2,588 2,274 2,013 1,805 1,626 1,476 1,350 1,238 30 60 119 321 507 686 858 1,111 1,357 1,603 1,834 2,148 2,535 2,908 3,281 3,646 3,318 2,871 2,520 2,237 1,998 1,805 1,641 1,499 1,372 32 67 127 343 544 731 917 1,193 1,454 1,715 1,969 2,304 2,714 3,117 3,520 3,915 3,654 3,169 2,781 2,461 2,207 1,991 1,805 1,648 1,514 35 75 142 380 597 805 1,014 1,312 1,603 1,887 2,170 2,543 2,990 3,438 3,878 4,310 4,176 3,624 3,177 2,819 2,520 2,274 2,066 1,887 1,730 40 89 164 433 686 932 1,171 1,514 1,849 2,185 2,506 2,931 3,460 3,967 4,474 4,981 5,108 4,422 3,885 3,445 3,080 2,781 2,520 2,304 2,110 45 97 186 492 783 1,059 1,327 1,723 2,103 2,476 2,849 3,333 3,922 4,511 5,086 5,593 6,092 5,280 4,631 4,109 3,676 3,318 3,013 2,752 2,520 A B C Type A: Manual or drip lubrication Type B: Bath or disc lubrication Type C: Oil or stream lubrication C-53 PAES 303:2000 Table 12 – Power ratings for standard single strand roller chain – No. 35, watts No. of Revolutions per minute of small sprocket teeth small 50 100 300 500 700 900 1,200 1,500 1,800 2,100 2500 3,000 3,500 4,000 4,500 5,000 5,500 6,000 6,500 7,000 7,500 8,000 8,500 9,000 10,000 sprocket 11 75 134 365 574 783 977 1,268 1,551 1,827 2,103 2,461 2,192 1,737 1,424 1,193 1,022 880 776 686 611 552 500 462 425 358 12 82 149 403 634 858 1,074 1,394 1,708 2,013 2,312 2,699 2,498 1,984 1,618 1,357 1,163 1,007 880 783 701 634 574 522 477 410 13 89 164 440 694 940 1,171 1,521 1,857 2,192 2,520 2,946 2,811 2,237 1,827 1,529 1,305 1,133 992 880 790 708 649 589 544 462 14 97 179 470 753 1,019 1,275 1,648 2,013 2,371 2,729 3,192 3,147 2,498 2,043 1,715 1,462 1,268 1,111 984 880 798 723 656 604 515 15 104 186 507 805 1,096 1,372 1,775 2,170 2,558 2,938 3,438 3,490 2,767 2,267 1,902 1,618 1,402 1,230 1,096 977 880 798 731 671 574 16 112 201 544 865 1,171 1,469 1,902 2,327 2,744 3,147 3,684 3,840 3,050 2,498 2,095 1,790 1,551 1,357 1,208 1,081 969 880 805 738 634 17 119 216 582 925 1,253 1,566 2,036 2,483 2,931 3,363 3,937 4,206 3,341 2,737 2,759 1,954 1,693 1,491 1,320 1,178 1,066 969 880 813 694 18 127 231 619 984 1,327 1,670 2,170 2,640 3,117 3,579 4,183 4,586 3,639 2,975 2,498 2,133 1,849 1,618 1,439 1,290 1,163 1,051 962 887 753 19 134 246 656 1,044 1,409 1,767 2,289 2,804 3,303 3,796 4,437 4,974 3,945 3,229 2,707 2,312 2,006 1,760 1,559 1,394 1,260 1,141 1,044 954 820 20 142 261 694 1,104 1,491 1,872 2,424 2,960 3,490 4,012 4,690 5,369 4,265 3,490 2,923 2,498 2,163 1,902 1,685 1,506 1,357 1,230 1,126 1,037 880 21 149 276 731 1,163 1,573 1,969 2,550 3,124 3,676 4,228 4,944 5,779 4,586 3,751 3,147 2,685 2,327 2,043 1,812 1,618 1,462 1,327 1,208 1,111 947 22 157 283 768 1,223 1,655 2,073 2,685 3,281 3,870 4,444 5,198 6,122 4,914 4,027 3,371 2,878 2,498 2,192 1,946 1,737 1,566 1,424 1,298 1,193 1,022 23 164 298 805 1,283 1,737 2,177 2,819 3,445 4,057 4,661 5,451 6,428 5,257 4,303 3,602 3,080 2,670 2,341 2,081 1,857 1,678 1,521 1,387 1,275 1,089 24 172 313 850 1,342 1,820 2,274 2,953 3,609 4,250 4,884 5,712 6,726 5,332 4,586 3,840 3,281 2,841 2,498 2,215 1,976 1,790 1,618 1,484 1,357 1,163 25 179 328 887 1,402 1,902 2,379 3,080 3,766 4,437 5,101 5,966 7,032 5,958 4,877 4,086 3,490 2,274 2,655 2,356 2,103 1,902 1,723 1,573 1,447 1,230 26 186 343 925 1,462 1,984 2,483 3,214 3,930 4,631 5,324 6,227 7,338 6,316 5,168 4,333 3,699 3,207 2,811 2,498 2,237 2,013 1,827 1,670 1,529 1,305 28 201 373 999 1,581 2,148 2,692 3,482 4,258 5,019 5,764 6,749 7,979 7,062 5,779 4,840 4,139 3,587 3,147 2,789 2,498 2,252 2,043 1,864 1,715 1,387 30 216 403 1,081 1,708 2,312 2,901 3,751 4,586 5,406 6,212 7,263 8,576 7,830 6,406 5,369 4,586 3,975 3,490 3,095 2,767 2,498 2,267 2,066 1,902 1,618 32 231 433 1,156 1,827 2,476 3,110 4,027 4,922 5,794 6,659 7,755 9,172 8,650 7,062 5,913 5,048 4,377 3,840 3,408 3,050 2,752 2,498 2,282 2,095 - 35 254 477 1,275 2,013 2,729 3,423 4,437 5,421 6,383 7,338 8,576 10,142 9,843 8,054 6,734 5,779 5,011 4,400 3,900 3,490 3,147 2,856 2,610 2,394 - 40 291 544 1,469 2,327 3,154 3,952 5,123 6,264 7,375 8,501 9,918 11,707 12,080 9,843 8,277 7,062 6,122 5,369 4,765 4,265 3,840 3,490 - - - 45 336 619 1,670 2,647 3,579 4,489 5,816 7,107 8,352 9,620 11,260 12,751 14,392 11,782 9,843 8,426 7,300 6,406 5,682 5,086 - - - - - A B C Type A: Manual or drip lubrication Type B: Bath or disc lubrication Type C: Oil or stream lubrication C-54  PAES 303:2000 Table 13 – Power ratings for standard single strand roller chain – No. 40, watts No. of Revolutions per minute of small sprocket teeth small 10 25 50 100 200 300 400 500 700 900 1,000 1,200 1,400 1,600 1,800 2,100 2,400 2,700 3,000 3,500 4,000 5,000 6,000 7,000 8,000 sprocket 11 37 89 172 321 597 865 1,119 1,365 1,849 2,319 2,550 3,005 3,453 3,893 3,475 2,759 2,259 1,894 1,618 1,283 1,051 753 574 455 373 12 45 104 186 350 656 947 1,230 1,499 2,036 2,550 2,804 3,303 3,796 4,280 3,960 3,147 2,573 2,155 1,842 1,462 1,193 858 649 515 425 13 45 112 209 388 716 1,037 1,342 1,641 2,215 2,781 3,057 3,602 4,139 4,668 4,467 3,550 2,901 2,431 2,081 1,648 1,350 962 731 582 477 14 52 119 224 418 776 1,119 1,454 1,775 2,401 3,013 3,311 3,900 4,482 5,056 4,996 3,960 3,244 2,722 2,319 1,842 1,506 1,081 820 649 529 15 52 127 239 447 835 1,208 1,566 1,909 2,588 3,244 3,564 4,206 4,825 5,444 5,541 4,392 3,594 3,013 2,573 2,043 1,670 1,193 910 723 589 16 60 142 261 485 895 1,298 1,678 2,051 2,774 3,475 3,825 4,504 5,175 5,839 6,100 4,840 3,960 3,318 2,834 2,252 1,842 1,320 999 798 649 17 60 149 276 515 962 1,380 1,790 2,185 2,960 3,714 4,086 4,810 5,526 6,234 6,681 5,302 4,340 3,639 3,110 2,468 2,021 1,447 1,096 872 731 18 67 157 291 544 1,022 1,469 1,902 2,327 3,147 3,952 4,340 5,116 5,876 6,629 7,278 5,779 4,728 3,960 3,385 2,685 2,200 1,573 1,193 947 - 19 67 164 313 582 1,081 1,559 2,021 2,468 3,341 4,191 4,601 5,421 6,234 7,024 7,830 6,264 5,130 4,295 3,669 2,916 2,386 1,708 1,298 1,029 - 20 75 179 328 611 1,141 1,648 2,133 2,610 3,527 4,429 4,869 5,734 6,585 7,427 8,277 6,763 5,541 4,638 3,960 3,147 2,573 1,842 1,402 1,111 - 21 82 186 343 649 1,208 1,737 2,252 2,752 3,721 4,668 5,130 6,048 6,942 7,830 8,725 7,278 5,958 4,996 4,265 3,385 2,767 1,984 1,506 1,193 - 22 82 194 365 679 1,268 1,827 2,364 2,893 3,915 4,907 5,391 6,353 7,300 8,203 9,172 7,830 6,391 5,354 4,571 3,632 2,968 2,125 1,618 1,283 - 23 89 201 380 716 1,327 1,916 2,483 3,035 4,109 5,145 5,660 6,667 7,681 8,650 9,620 8,352 6,831 5,727 4,884 3,878 3,177 2,274 1,730 1,372 - 24 97 216 403 746 1,394 2,006 2,595 3,177 4,295 5,391 5,928 6,980 8,054 9,023 10,067 8,874 7,278 6,100 5,212 4,131 3,385 2,424 1,842 1,462 - 25 97 224 418 783 1,454 2,095 2,714 3,318 4,489 5,630 6,189 7,293 8,352 9,470 10,514 9,470 7,755 6,488 5,541 4,392 3,594 2,573 1,961 - - 26 104 231 433 813 1,521 2,185 2,834 3,460 4,683 5,876 6,458 7,606 8,725 9,843 10,962 10,067 8,203 6,883 5,876 4,661 3,818 2,729 2,081 - - 28 112 254 470 880 1,641 2,371 3,065 3,751 5,078 6,368 7,002 8,277 9,470 10,664 11,857 11,186 9,172 7,681 6,562 5,212 4,265 3,050 2,319 - - 30 119 276 507 947 1,775 2,550 3,303 4,042 5,466 6,860 7,532 8,874 10,216 11,484 12,826 12,453 10,142 8,501 7,278 5,779 4,728 3,385 2,573 - - 32 127 291 544 1,014 1,902 2,737 3,542 4,333 5,861 7,353 8,054 9,545 10,962 12,304 13,721 13,721 11,186 9,396 8,054 6,443 5,212 3,729 - - - 35 142 321 604 1,119 2,095 3,013 3,907 4,772 6,458 8,128 8,874 10,514 12,080 13,572 15,138 15,660 12,826 10,738 9,172 7,278 5,958 4,265 - - - 40 164 373 694 1,298 2,416 3,482 4,511 5,511 7,457 9,321 10,291 12,155 13,945 15,734 17,449 19,164 15,660 13,124 11,186 8,874 7,278 5,212 - - - 45 186 425 790 1,469 2,744 3,952 5,123 6,264 8,501 10,589 11,707 13,795 15,809 17,822 19,836 22,744 18,717 15,660 13,348 10,589 8,725 - - - - A B C Type A: Manual or drip lubrication Type B: Bath or disc lubrication Type C: Oil or stream lubrication C-55 PAES 303:2000 Table 14 – Power ratings for standard single strand roller chain – No. 41, watts No. of Revolutions per minute of small sprocket teeth small 10 25 50 100 200 300 400 500 700 900 1,000 1,200 1,400 1,600 1,800 2,100 2,500 2,700 3,000 3,500 4,000 5,000 6,000 7,000 8,000 sprocket 11 22 52 97 179 328 403 611 753 1,022 1,275 1,402 1,275 1,014 828 694 552 455 380 321 254 209 149 112 89 75 12 22 52 104 194 365 522 679 828 1,119 1,402 1,544 1,454 1,156 947 790 626 515 433 365 291 239 172 127 104 82 13 30 60 112 209 395 567 738 902 1,215 1,529 1,678 1,641 1,305 1,066 895 708 582 485 418 328 268 194 149 119 97 14 30 67 119 231 425 619 798 977 1,320 1,655 1,820 1,834 1,454 1,193 999 790 649 544 462 365 298 216 164 127 104 15 30 67 134 246 462 664 858 1,051 1,424 1,715 1,961 2,036 1,618 1,320 1,111 880 716 604 515 418 336 239 179 142 119 16 30 75 142 268 492 708 925 1,126 1,529 1,916 2,103 2,245 1,782 1,454 1,223 969 790 664 559 447 365 261 201 157 127 17 37 82 164 283 529 761 984 1,201 1,626 2,043 2,245 2,453 1,946 1,596 1,335 1,059 865 731 619 492 403 291 216 172 142 18 37 89 164 298 559 805 1,044 1,283 1,730 2,170 2,386 2,677 2,125 1,737 1,454 1,156 947 790 679 537 440 313 239 186 - 19 37 89 172 321 597 858 1,111 1,357 1,834 2,304 2,535 2,901 2,304 1,887 1,581 1,215 1,029 858 694 582 477 336 261 209 - 20 45 97 179 336 626 902 1,171 1,432 2,088 2,431 2,677 3,132 2,483 2,036 1,708 1,350 1,111 925 790 626 515 365 283 224 - 21 45 104 194 358 664 954 1,238 1,514 2,043 2,565 2,819 3,326 2,677 2,192 1,834 1,454 1,193 999 850 679 552 395 298 239 - 22 45 104 201 373 694 1,007 1,298 1,588 2,155 2,699 2,968 3,497 2,871 2,349 1,969 1,559 1,275 1,074 917 723 597 425 321 254 - 23 45 112 209 395 731 1,051 1,365 1,670 2,259 2,834 3,110 3,669 3,065 2,513 2,103 1,670 1,365 1,148 977 776 634 455 343 276 - 24 52 119 216 410 768 1,104 1,432 1,745 2,364 2,960 3,259 3,840 3,266 2,677 2,245 1,782 1,454 1,223 1,104 828 679 485 365 291 - 25 52 127 231 425 798 1,156 1,491 1,827 2,468 3,095 3,408 4,012 3,475 2,841 2,386 1,894 1,514 1,298 1,111 880 708 515 395 - - 26 52 127 239 447 835 1,201 1,559 1,902 2,580 3,229 3,550 4,183 3,684 3,020 2,528 2,006 1,641 1,380 1,178 932 761 544 418 - - 28 60 142 261 485 902 1,305 1,685 2,066 2,789 3,497 3,848 4,534 4,116 3,371 2,826 2,245 1,834 1,536 1,305 1,044 850 611 462 - - 30 60 149 283 522 977 1,402 1,820 2,222 3,005 3,773 4,146 4,884 4,571 3,736 3,132 2,483 2,036 1,708 1,380 1,156 947 679 515 - - 32 67 164 298 559 1,044 1,506 1,946 2,386 3,229 4,042 4,444 5,242 5,033 4,116 3,453 2,737 2,245 1,879 1,603 1,275 1,044 746 - - - 35 75 179 328 619 1,148 1,655 2,148 2,625 3,550 4,452 4,899 5,772 5,757 4,713 3,945 3,132 2,565 2,148 1,834 1,454 1,193 850 - - - 40 89 201 380 716 1,327 1,916 2,483 3,035 4,101 5,145 5,660 6,667 7,032 5,757 4,825 3,825 3,132 2,625 2,245 2,006 1,454 1,044 - - - 45 104 231 433 805 1,506 2,177 2,819 33,273 4,661 5,846 6,428 7,606 8,426 6,868 5,757 4,571 3,736 3,132 2,677 2,125 1,737 - - - - A B C Type A: Manual or drip lubrication Type B: Bath or disc lubrication Type C: Oil or stream lubrication C-56  PAES 303:2000 Table 15 – Power ratings for standard single strand roller chain – No. 50, watts No. of Revolutions per minute of small sprocket teeth small 10 25 50 100 200 300 400 500 700 900 1,000 1,200 1,400 1,600 1,800 2,100 2,400 2,700 3,000 3,500 4,000 4,500 5000 5,500 6,000 sprocket 11 82 179 336 626 1,163 1,678 2,177 2,662 3,602 4,519 4,966 5,854 6,063 4,959 4,161 3,296 2,699 2,267 1,931 1,536 1,253 1,051 895 776 686 12 89 194 365 686 1,283 1,842 2,394 2,923 3,960 4,959 5,451 6,428 6,905 5,652 4,735 3,758 3,080 2,580 2,200 1,745 1,432 1,201 1,022 887 776 13 97 216 403 746 1,394 2,013 2,610 3,184 4,310 5,406 5,943 7,010 7,755 6,376 5,339 4,243 3,468 2,908 2,483 1,969 1,611 1,350 1,156 999 - 14 104 231 433 813 1,514 2,177 2,826 3,453 4,676 5,861 6,592 7,606 8,725 7,121 5,973 4,735 3,878 3,251 2,774 2,200 1,805 1,514 1,290 1,119 - 15 112 254 470 872 1,633 2,349 3,042 3,721 5,033 6,316 6,942 8,203 9,545 7,904 6,622 5,257 4,303 3,602 3,080 2,438 1,998 1,678 1,432 1,238 - 16 119 268 500 940 1,745 2,506 3,259 3,989 5,399 6,771 7,442 8,799 10,067 8,725 7,278 5,787 4,735 3,967 3,393 2,692 1,902 1,842 1,573 1,365 - 17 127 291 537 999 1,864 2,692 3,482 4,258 5,764 7,226 7,979 9,396 10,738 9,545 7,979 6,338 5,190 4,347 3,714 2,946 2,409 2,021 1,723 1,499 - 18 134 306 567 1,066 1,984 2,856 3,706 4,526 6,130 7,681 8,426 9,992 11,409 10,365 8,725 6,920 5,652 4,735 4,042 3,207 2,625 2,200 1,879 - - 19 142 321 604 1,126 2,103 3,035 3,930 4,802 6,503 8,128 8,948 10,589 12,155 11,260 9,470 7,457 6,130 5,138 4,385 3,482 2,849 2,386 2,036 - - 20 149 343 641 1,193 2,222 3,207 4,154 5,071 6,868 8,576 9,470 11,186 12,826 12,155 10,216 8,054 6,622 5,324 4,735 3,758 3,080 2,580 2,200 - - 21 157 358 671 1,260 2,341 3,378 4,377 5,347 7,241 9,098 9,992 11,782 13,497 13,124 10,962 8,725 7,121 5,973 5,101 4,042 3,311 2,774 2,371 - - 22 164 380 708 1,320 2,468 3,550 4,601 5,623 7,606 9,545 10,514 12,379 14,243 14,019 11,782 9,321 7,606 6,406 5,466 4,340 3,550 2,975 2,543 - - 23 172 395 746 1,387 2,588 3,729 4,825 5,898 7,979 9,992 11,036 12,975 14,914 14,989 12,602 9,992 8,203 6,846 5,846 4,638 3,796 3,184 - - - 24 186 418 776 1,454 2,707 3,900 5,056 6,182 8,352 10,514 11,558 13,572 15,585 15,958 13,423 10,664 8,725 7,293 6,450 4,944 4,042 3,393 - - - 25 194 433 813 1,514 2,834 4,079 5,280 6,458 8,725 10,962 12,080 14,168 16,331 17,002 14,243 11,335 9,247 7,755 6,622 5,257 4,303 3,602 - - - 26 201 455 850 1,581 2,953 4,250 5,511 6,734 9,098 11,409 12,602 14,839 17,002 18,046 15,138 12,006 9,843 8,203 7,024 5,570 4,564 3,825 - - - 28 216 492 917 1,715 3,199 4,608 5,973 7,300 9,843 12,379 13,646 16,033 18,419 20,134 16,853 13,423 10,962 9,172 7,830 6,227 5,101 4,273 - - - 30 231 529 992 1,857 3,3273 4,966 6,435 7,830 10,664 13,348 14,690 17,300 19,836 22,371 18,717 14,839 12,155 10,216 8,725 6,905 5,652 - - - - 32 246 567 1,059 1,984 3,699 5,324 6,898 8,426 11,409 14,317 15,734 18,568 21,327 24,012 20,656 16,405 13,423 11,260 9,620 7,606 6,227 - - - - 35 276 626 1,171 2,185 4,072 5,861 7,606 9,321 12,602 15,734 17,300 20,432 23,490 26,472 23,564 18,717 15,361 12,826 10,962 8,725 7,121 - - - - 40 321 723 1,350 2,520 4,705 6,771 8,799 10,738 14,541 18,195 19,985 23,564 27,069 30,574 28,859 22,893 18,717 15,660 13,423 10,664 - - - - - 45 358 820 1,536 2,863 5,339 7,681 9,992 12,155 16,480 20,656 22,744 26,771 30,797 34,675 34,377 27,293 22,371 18,717 15,958 - - - - - - A B C Type A: Manual or drip lubrication Type B: Bath or disc lubrication Type C: Oil or stream lubrication C-57 PAES 303:2000 Table 16 – Power ratings for standard single strand roller chain – No. 60, watts No. of Revolutions per minute of small sprocket teeth small 10 250 50 100 150 200 300 400 500 600 700 800 900 1,000 1,100 1,200 1,400 1,600 1,800 2,000 2,500 3,000 3,500 4,000 4,500 sprocket 11 134 306 574 1,074 1,544 2,006 2,886 3,743 4,571 5,391 6,189 6,980 7,755 8,501 9,321 8,874 7,017 5,742 4,810 4,109 2,938 2,237 1,775 1,454 1,215 12 149 336 634 1,178 1,700 2,200 3,169 4,109 5,026 5,921 6,801 7,681 8,501 9,396 10,216 10,067 7,979 6,540 5,481 4,683 3,348 2,550 2,021 1,655 1,387 13 164 373 686 1,290 1,857 2,401 3,460 4,482 5,473 6,450 7,412 8,352 9,321 10,216 11,111 11,335 9,023 7,375 6,182 5,280 3,773 2,871 2,282 1,864 - 14 179 403 746 1,394 2,006 2,602 3,743 4,855 5,936 6,987 8,054 9,023 10,067 11,036 12,080 12,677 10,067 8,277 6,905 5,898 4,221 3,214 2,550 2,088 - 15 186 433 805 1,499 2,163 2,804 4,034 5,227 6,391 7,532 8,650 9,769 10,813 11,931 12,975 14,019 11,186 9,172 7,681 6,540 4,683 3,557 2,826 2,312 - 16 201 462 865 1,611 2,319 3,005 4,325 5,608 6,853 8,054 9,247 10,440 11,633 12,751 13,945 15,063 12,304 10,067 8,426 7,203 5,153 3,922 3,110 2,550 - 17 216 641 925 1,723 2,476 3,207 4,623 5,988 7,315 8,650 9,918 11,186 12,453 13,646 14,839 16,107 13,497 11,036 92,47 7,904 5,645 4,295 3,408 2,789 - 18 231 522 977 1,827 2,632 3,415 4,914 6,368 7,755 9,172 10,514 11,857 13,199 14,541 15,809 17,077 14,690 12,006 10,067 8,576 6,152 4,683 3,714 3,042 - 19 246 559 1,037 1,939 2,789 3,617 5,212 6,749 8,277 9,694 11,186 12,602 14,019 15,361 16,778 18,121 15,958 13,050 10,887 9,321 6,674 5,078 4,027 3,296 - 20 261 589 1,096 2,051 2,953 3,825 5,503 7,136 8,725 10,291 11,782 13,348 14,765 16,256 17,748 19,164 17,226 14,094 11,633 10,067 7,203 5,481 4,347 - - 21 268 619 1,156 2,163 3,110 4,027 5,802 7,532 9,172 10,813 12,453 14,019 15,585 17,151 18,717 20,208 18,493 15,138 12,677 10,813 7,755 5,898 4,683 - - 22 283 649 1,215 2,274 3,274 4,236 6,107 7,904 9,694 11,409 13,050 14,765 16,405 18,046 19,686 21,252 19,836 16,256 13,572 11,633 8,277 6,324 5,019 - - 23 298 686 1,275 2,379 3,430 4,444 2,677 8,277 10,142 11,931 13,721 15,511 17,226 18,941 20,656 22,296 21,178 17,375 14,541 12,453 8,874 6,763 5,362 - - 24 313 671 1,335 2,498 3,594 4,653 6,704 8,650 10,589 12,528 14,392 16,182 18,046 19,836 21,625 23,340 22,595 18,493 15,511 13,124 9,470 7,353 5,720 - - 25 328 746 1,394 2,610 3,758 4,862 7,010 9,098 11,111 13,050 14,989 16,927 18,866 20,730 22,595 24,384 24,012 19,686 16,480 14,094 10,067 7,681 6,077 - - 26 343 783 1,454 2,722 3,915 5,078 7,308 9,470 11,558 13,646 15,660 17,673 19,686 21,625 23,564 25,428 25,503 20,880 17,449 14,914 10,664 8,128 6,376 - - 28 373 843 1,581 2,946 4,243 5,496 7,904 10,291 12,528 14,765 17,002 19,164 21,252 23,415 25,503 27,591 28,486 23,340 19,537 16,704 11,931 9,098 - - - 30 403 910 1,700 3,177 4,571 5,921 8,501 11,036 13,497 15,958 18,270 20,656 22,968 25,205 27,442 29,679 31,618 25,876 21,700 18,493 13,273 10,067 - - - 32 425 977 1,827 3,400 4,899 6,353 9,172 11,857 14,467 17,077 19,612 22,147 24,608 27,069 29,455 31,841 34,824 28,486 23,862 20,358 14,616 11,111 - - - 35 470 1,074 2,006 3,751 5,399 6,995 10,067 13,050 15,958 18,792 21,625 24,384 27,069 29,753 32,438 35,122 39,820 32,587 27,293 23,340 16,704 12,677 - - - 40 544 1,245 2,319 4,333 6,242 8,054 11,633 15,063 18,419 21,700 24,981 28,113 31,319 34,377 37,509 40,566 46,606 39,820 33,333 28,486 20,358 - - - - 45 619 1,409 2,632 4,922 7,084 9,172 13,199 17,151 20,954 24,683 28,337 31,319 35,570 39,075 42,579 46,010 52,870 47,501 39,820 34,004 24,310 - - - - A B C Type A: Manual or drip lubrication Type B: Bath or disc lubrication Type C: Oil or stream lubrication C-58  PAES 303:2000 Table 17 – Power ratings for standard single strand roller chain – No. 80, watts No. of Revolutions per minute of small sprocket teeth small 10 25 50 100 150 200 300 400 500 600 700 800 900 1,000 1,100 1,200 1,400 1,600 1,800 2,000 2,200 2400 2,700 3,000 3,400 sprocket 11 313 723 1,342 2,506 3,609 4,683 6,741 8,725 10,664 12,602 14,467 16,331 17,151 14,616 12,677 11,111 8,799 7,226 6,055 5,168 4,482 3,930 3,296 2,811 1,268 12 350 790 1,476 2,752 3,967 5,138 7,405 9,620 11,707 13,795 15,883 17,897 19,537 16,629 14,467 12,677 10,067 8,203 6,898 5,511 5,108 4,482 3,758 3,207 - 13 380 865 1,611 3,005 4,325 5,608 8,054 10,440 12,751 15,063 17,300 19,537 21,700 18,792 16,256 14,317 11,335 9,321 7,755 6,644 5,757 5,056 4,236 3,617 - 14 410 932 1,745 3,251 4,690 6,070 8,725 11,335 13,870 16,331 18,717 21,178 23,490 19,537 18,195 15,958 12,677 10,365 8,725 7,442 6,435 5,645 4,735 4,042 - 15 440 1,007 1,879 3,505 5,048 6,540 9,396 12,229 14,914 17,599 20,208 22,818 25,354 23,266 20,208 17,375 14,094 12,229 9,620 8,203 7,136 6,264 5,250 4,929 - 16 470 1,081 2,013 3,758 5,414 7,017 10,067 13,124 16,033 18,866 21,625 24,459 27,143 25,652 22,222 19,537 15,511 12,677 10,589 9,098 7,830 6,898 5,787 5,086 - 17 507 1,156 2,148 4,012 5,779 7,457 10,813 13,945 17,077 20,134 23,117 26,100 29,008 28,113 24,384 21,402 16,927 13,870 11,633 9,918 8,576 7,532 - - - 18 537 1,223 2,289 4,265 6,152 7,979 11,484 14,839 18,195 21,402 24,608 27,740 30,872 30,648 26,547 23,266 18,493 15,138 12,677 10,813 9,396 8,203 - - - 19 567 1,298 2,424 4,526 6,517 8,426 12,155 15,734 19,239 22,669 26,100 29,381 32,662 33,184 28,784 25,279 20,059 16,405 13,721 11,707 10,142 8,948 - - - 20 604 1,372 2,565 4,780 6,890 8,948 12,826 16,629 20,358 24,012 27,591 31,096 34,526 33,631 31,096 27,293 21,625 17,748 14,839 12,677 10,962 9,620 - - - 21 634 1,447 2,699 5,041 7,263 9,396 13,572 17,524 21,476 25,279 29,082 32,736 36,465 38,553 33,407 29,381 23,266 19,090 15,958 13,646 11,857 10,365 - - - 22 671 1,521 2,841 5,302 7,606 9,918 14,243 18,493 22,595 26,621 30,574 34,451 38,329 41,386 34,377 31,469 24,981 20,432 17,151 14,616 12,677 11,111 - - - 23 701 1,596 2,983 5,555 7,979 10,365 14,989 19,388 23,713 27,889 32,065 36,166 40,193 44,220 38,329 33,631 26,323 22,222 18,493 15,660 13,572 11,857 - - - 24 731 1,670 3,124 5,824 8,426 10,887 15,660 20,283 24,757 29,231 33,557 37,882 42,057 46,233 40,864 35,868 28,486 23,266 19,537 16,629 14,467 12,677 - - - 25 768 1,745 3,259 6,085 8,799 11,335 16,331 21,178 25,876 30,499 35,048 39,522 43,996 48,321 43,549 38,105 30,275 24,757 20,730 17,748 15,511 - - - - 26 798 1,827 3,400 6,353 9,172 11,857 17,077 22,147 26,994 31,841 36,614 41,237 45,861 50,409 46,084 40,417 32,065 26,249 21,252 18,792 16,256 - - - - 28 865 1,969 3,684 6,883 9,918 12,826 18,493 23,937 29,306 34,526 39,671 44,667 49,738 54,660 51,453 45,189 33,631 29,381 21,625 21,774 18,195 - - - - 30 932 2,125 3,975 7,412 10,664 13,795 19,910 25,801 31,543 37,210 42,729 48,172 53,541 57,344 57,121 50,111 39,746 32,513 27,293 23,266 20,208 - - - - 32 999 2,282 4,258 7,979 11,409 14,839 21,327 27,665 33,855 39,895 45,786 51,602 57,419 63,086 62,863 55,182 43,773 34,377 30,052 25,652 - - - - - 35 1,104 2,513 4,690 8,725 12,602 16,331 23,564 30,499 37,285 43,922 50,409 56,897 63,235 69,574 73,451 63,161 50,111 41,014 35,868 29,381 - - - - - 40 1,275 2,901 5,421 10,142 14,541 18,866 27,143 35,197 43,027 50,708 58,239 65,696 73,079 80,536 87,247 76,807 61,222 50,111 - - - - - - - 45 1,447 3,296 6,152 11,484 16,555 21,402 30,872 39,970 48,918 57,568 66,144 74,570 82,773 90,975 99,178 91,721 73,079 59,805 - - - - - - - A B C Type A: Manual or drip lubrication Type B: Bath or disc lubrication Type C: Oil or stream lubrication C-59 PAES 303:2000 Table 18 – Power ratings for standard single strand roller chain – No. 100, watts No. of Revolutions per minute - Small sprocket teeth small 10 25 50 100 150 200 300 400 500 600 700 800 900 1,000 1,100 1,200 1,300 1,400 1,600 1,800 sprocket 11 604 1,380 2,573 4,802 6,920 8,948 12,901 16,704 20,432 24,086 27,665 24,459 20,507 17,449 15,138 13,273 12,528 10,589 8,650 7,241 12 664 1,514 2,826 5,280 7,606 9,843 14,168 18,344 22,446 26,472 30,425 27,815 23,340 19,910 17,300 15,138 13,423 12,006 9,843 8,277 13 723 1,655 3,080 5,757 8,277 10,738 15,436 20,059 24,459 28,859 33,184 31,394 26,323 22,446 19,463 17,077 15,138 13,572 11,111 9,321 14 783 1,790 3,341 6,234 8,948 12,379 16,778 21,700 26,547 31,245 35,943 35,048 29,381 25,130 21,774 19,090 16,927 15,138 12,379 10,365 15 843 1,931 3,602 6,719 9,694 12,528 18,046 23,415 28,560 33,706 38,702 38,926 32,587 27,815 24,161 21,178 18,792 16,778 13,721 11,558 16 910 2,066 3,855 7,203 10,365 13,423 19,388 25,056 30,648 36,092 41,461 42,878 35,943 30,648 26,621 23,340 20,656 18,568 15,138 12,677 17 969 2,207 4,116 7,681 11,036 14,317 20,656 26,771 32,736 38,553 44,295 46,979 39,373 33,557 29,082 25,578 22,669 20,283 16,629 - 18 1,029 2,349 4,385 8,203 11,782 15,287 21,998 28,486 34,824 41,014 47,128 47,427 42,878 36,614 31,692 27,815 24,683 22,073 18,046 - 19 1,089 2,491 4,646 8,650 12,453 16,182 23,266 30,201 36,912 43,474 49,962 55,480 46,457 39,671 34,377 30,201 26,771 23,937 19,612 - 20 1,156 2,632 4,907 9,172 13,199 17,077 24,608 31,916 39,000 45,935 52,796 59,507 50,186 42,878 37,136 32,587 28,933 25,876 21,178 - 21 1,215 2,774 5,175 9,694 13,945 18,046 25,950 33,631 41,088 48,471 55,629 62,788 53,989 46,084 39,970 35,048 31,096 27,815 22,818 - 22 1,275 2,916 5,444 10,142 14,616 18,941 27,293 35,346 43,251 50,931 58,537 65,994 57,941 49,440 42,878 37,583 33,333 29,828 24,459 - 23 1,342 3,057 5,712 10,664 15,361 19,910 28,635 37,136 45,339 53,467 61,371 69,201 61,893 52,870 45,786 40,193 35,644 31,916 26,100 - 24 1,402 3,207 5,981 11,186 16,033 20,805 29,977 38,851 47,501 55,928 63,534 72,482 65,994 56,599 63,757 42,878 38,031 34,004 27,815 - 25 1,469 3,348 6,249 11,633 16,778 21,774 31,319 40,566 49,664 58,463 67,188 76,061 70,170 59,880 51,901 45,562 40,417 36,166 - - 26 1,529 3,490 6,517 12,155 17,524 22,669 32,662 42,356 51,752 60,998 70,096 79,044 74,421 63,534 55,033 47,949 42,878 38,329 - - 28 1,655 3,781 7,062 13,199 19,015 24,608 35,421 45,861 56,077 66,069 76,061 85,756 83,518 70,991 61,520 53,989 47,874 42,878 - - 30 1,790 4,079 7,606 14,168 20,432 26,472 38,180 49,440 60,402 71,214 82,027 92,467 92,467 79,044 68,232 59,880 53,094 47,501 - - 32 1,916 4,370 8,128 15,212 21,924 28,411 40,939 53,019 64,056 76,061 87,993 99,178 101,415 86,501 75,316 65,994 58,537 52,348 - - 35 2,110 4,817 8,948 16,778 24,161 31,319 45,040 58,388 71,363 84,264 96,941 108,872 116,329 99,178 85,756 75,316 - - - - 40 2,438 5,563 10,365 19,388 27,889 36,166 52,050 67,411 82,773 96,941 111,855 126,023 140,192 121,549 105,144 92,467 - - - - 45 2,767 6,316 11,782 21,998 31,692 41,014 59,134 76,807 93,958 110,364 126,769 143,174 158,834 144,666 - - - - - A B C Type A: Manual or drip lubrication Type B: Bath or disc lubrication Type C: Oil or stream lubrication C-60  PAES 303:2000 Table 19 – Power ratings for standard single strand roller chain – No. 120 No. of Revolutions per minute of small sprocket teeth small 10 25 50 100 150 200 300 400 500 600 700 800 900 1,000 1,100 1,200 1,300 1,400 1500 1600 1,700 1,800 1,900 2,000 sprocket 11 1,022 2,327 4,347 8,128 11,707 15,138 21,774 28,262 34,526 40,715 34,526 28,262 23,713 20,208 17,524 15,361 13,646 12,229 11,036 9,992 9,098 8,352 7,755 6,338 12 1,119 2,558 4,772 8,874 12,826 16,629 23,937 31,021 37,956 44,667 39,373 32,214 26,994 23,042 19,985 17,524 15,585 13,945 12,528 11,335 10,365 9,545 8,650 7,457 13 1,223 2,789 5,205 9,694 14,019 18,121 26,100 33,855 41,386 48,694 44,369 36,316 30,425 26,025 22,520 19,761 17,524 15,660 14,168 12,826 11,707 10,738 9,918 9,172 14 1,327 3,020 5,637 10,514 15,138 19,612 28,262 36,614 44,817 52,796 49,589 40,566 34,004 29,082 25,205 22,073 19,612 17,524 15,809 14,317 13,124 12,006 10,440 6,667 15 1,424 3,259 6,077 11,335 16,331 21,178 30,499 39,522 48,247 56,897 55,033 45,040 37,732 32,214 27,889 24,534 21,700 19,463 17,524 15,883 14,839 13,348 11,558 - 16 1,529 3,490 6,517 12,155 17,524 22,669 32,662 42,356 51,752 60,998 60,625 49,589 41,535 35,495 30,723 26,994 23,937 21,402 18,643 17,524 16,033 14,690 13,572 - 17 1,633 3,729 6,957 12,975 18,717 24,235 34,899 45,189 55,256 65,100 66,367 54,287 45,488 38,851 33,706 29,530 26,249 23,490 21,178 19,090 17,599 16,107 14,168 - 18 1,737 3,967 7,397 13,795 19,910 25,801 37,136 48,098 58,761 69,276 72,333 59,209 49,589 42,356 36,688 32,214 28,560 26,025 22,595 19,463 19,314 17,524 8,277 - 19 1,842 4,206 7,830 14,616 21,103 27,293 39,373 51,006 62,341 73,451 78,299 64,205 53,765 45,935 39,820 34,899 30,947 27,740 24,981 22,669 20,730 19,015 - - 20 1,946 4,444 8,277 15,436 22,296 28,859 41,610 53,840 65,845 77,553 85,010 69,276 58,090 49,589 42,952 37,732 33,482 29,903 26,994 24,534 23,042 20,507 - - 21 2,051 4,683 8,725 16,331 23,490 30,425 43,847 56,822 69,425 82,027 90,975 74,570 62,490 53,392 46,233 40,566 36,017 32,214 29,082 26,398 24,086 22,818 - - 22 2,163 4,922 9,172 17,151 24,683 31,991 46,084 59,731 73,004 85,756 97,687 79,790 67,038 57,195 49,589 43,549 38,627 34,526 31,170 28,262 25,801 14,168 - - 23 2,267 5,168 9,620 17,971 25,950 33,557 48,396 62,639 76,807 90,230 103,652 85,756 71,662 61,147 53,019 46,532 41,983 36,912 33,258 30,201 27,591 - - - 24 2,371 5,406 10,067 18,866 27,143 35,122 50,633 65,622 80,536 94,704 108,872 90,975 76,061 65,174 56,524 49,589 43,996 39,224 35,719 32,214 29,381 - - - 25 2,476 5,652 10,514 19,686 28,337 36,763 52,945 68,530 83,518 98,432 113,346 96,941 81,281 69,276