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20B Metric Roller Chain Sprockets

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20B roller chain sprockets are manufactured for metric 20B roller chain and are manufactured in accordance with ISO, DIN, and BS228/3 standards. Our sprockets are precision manufactured from high-quality steel, directly interchange with other manufactures, and are engineered for superb performance and durability. Common styles of these sprockets include; A-Plate, B-Hub, C-Hub, and taper bushed type but others are available upon request. The below charts show our standard sizes for 20B sprockets, if you don't see the exact sprocket you need we also custom manufacture sprockets.

Stainless Steel Sprockets-13

20B A-Plate Sprockets:


Sprocket Size
Tooth Count
Pitch Diameter
Stock Bore
Sprocket Weight (kg)
20A8 8 82.97mm 25mm 0.63
20A9 9 92.83mm 25mm 0.95
20A10 10 102.75mm 25mm 1.27
20A11 11 112.70mm 25mm 1.59
20A12 12 122.67mm 25mm 1.91
20A13 13 132.67mm 25mm 2.18
20A14 14 142.68mm 25mm 2.49
20A15 15 152.71mm 25mm 2.68
20A16 16 162.75mm 24mm 3.08
20A17 17 172.79mm 24mm 3.54
20A18 18 182.84mm 30mm 3.81
20A19 19 192.90mm 30mm 4.31
20A20 20 202.96mm 30mm 4.58
20A21 21 213.03mm 32mm 5.17
20A22 22 223.10mm 32mm 5.72
20A23 23 233.17mm 32mm 5.99
20A24 24 243.25mm 32mm 6.62
20A25 25 253.32mm 32mm 6.94
20A26 26 263.41mm 32mm 7.62
20A27 27 273.49mm 32mm 8.35
20A28 28 283.57mm 32mm 8.85
20A29 29 293.66mm 32mm 9.43
20A30 30 303.75mm 32mm 9.98
20A31 31 313.83mm 32mm 10.73
20A32 32 323.92mm 32mm 11.49
20A33 33 334.01mm 32mm 12.24
20A34 34 344.10mm 32mm 13.00
20A35 35 354.20mm 32mm 13.75
20A36 36 364.29mm 32mm 14.50
20A37 37 374.38mm 32mm 15.25
20A38 38 384.48mm 32mm 16.01
20A39 39 394.57mm 32mm 16.76
20A40 40 404.67mm 32mm 17.52
20A41 41 414.77mm 32mm 18.27
20A42 42 424.88mm 32mm 19.03
20A43 43 434.96mm 32mm 19.78
20A44 44 445.06mm 32mm 20.53
20A45 45 455.15mm 32mm 21.29
20A46 46 465.25mm 32mm 22.04
20A47 47 475.35mm 32mm 22.79
20A48 48 485.45mm 32mm 23.55
20A49 49 495.55mm 32mm 24.30
20A50 50 505.65mm 32mm 25.06
20A51 51 515.75mm 40mm 24.43
20A52 52 525.85mm 40mm 25.85
20A53 53 535.95mm 40mm 27.27
20A54 54 546.05mm 40mm 25.70
20A55 55 556.15mm 40mm 30.12
20A56 56 566.25mm 40mm 31.34
20A57 57 576.35mm 40mm 32.96
20A58 58 586.45mm 40mm 35.80
20A59 59 596.56mm 40mm 37.22
20A60 60 606.66mm 40mm 38.64
20A70 70 707.68mm 40mm 52.85
20A72 72 727.89mm 40mm 55.70
20A76 76 768.30mm 40mm 61.38
20A80 80 808.71mm 40mm 67.06
20A84 84 849.13mm 40mm 72.75
20A90 90 909.76mm 40mm 81.27
20A95 95 960.28mm 40mm 102.42
20A96 96 970.38mm 40mm 103.84
20A114 114 1152.27mm 40mm 130.84

20B B-Hub Sprockets:


Sprocket Size
Tooth Count
Pitch Diameter
Stock Bore
Maximum Bore
Hub Diameter
Length Thru Bore (LTB)
Sprocket Weight (kg)
20B8 8 82.97mm 25mm 57mm 48mm 48mm 1.04
20B9 9 92.83mm 25mm 57mm 58mm 48mm 1.45
20B10 10 102.75mm 25mm 60mm 69mm 48mm 1.86
20B11 11 112.70mm 25mm 70mm 79mm 48mm 2.40
20B12 12 122.67mm 25mm 76mm 90mm 48mm 2.95
20B13 13 132.67mm 25mm 76mm 98mm 41mm 3.00
20B14 14 142.68mm 25mm 76mm 106mm 41mm 3.40
20B15 15 152.71mm 25mm 76mm 114mm 44mm 4.31
20B16 16 162.75mm 25mm 76mm 114mm 44mm 4.63
20B17 17 172.79mm 32mm 76mm 114mm 44mm 4.99
20B18 18 182.84mm 32mm 76mm 114mm 44mm 5.44
20B19 19 192.90mm 32mm 76mm 114mm 51mm 5.90
20B20 20 202.96mm 32mm 76mm 114mm 51mm 6.35
20B21 21 213.03mm 32mm 76mm 114mm 51mm 7.03
20B22 22 223.10mm 32mm 76mm 114mm 51mm 7.71
20B23 23 233.17mm 32mm 84mm 114mm 51mm 8.16
20B24 24 243.25mm 32mm 84mm 114mm 51mm 8.62
20B25 25 253.32mm 32mm 84mm 114mm 51mm 9.07
20B26 26 263.41mm 32mm 84mm 127mm 51mm 9.53
20B27 27 273.49mm 32mm 84mm 127mm 51mm 10.43
20B28 28 283.57mm 32mm 84mm 127mm 51mm 11.34
20B29 29 293.66mm 32mm 84mm 127mm 51mm 11.76
20B30 30 303.75mm 32mm 84mm 127mm 51mm 12.02
20B31 31 313.83mm 32mm 84mm 127mm 51mm 12.77
20B32 32 323.92mm 32mm 84mm 127mm 51mm 13.52
20B33 33 334.01mm 32mm 84mm 127mm 51mm 14.59
20B34 34 344.10mm 32mm 84mm 127mm 51mm 15.66
20B35 35 354.20mm 32mm 84mm 127mm 64mm 16.74
20B36 36 364.29mm 32mm 84mm 127mm 64mm 17.51
20B37 37 374.38mm 32mm 84mm 127mm 64mm 18.17
20B38 38 384.48mm 32mm 84mm 127mm 64mm 18.82
20B39 39 394.57mm 32mm 84mm 127mm 64mm 19.78
20B40 40 404.67mm 32mm 84mm 127mm 64mm 21.27
20B41 41 414.77mm 32mm 84mm 127mm 64mm 22.07
20B42 42 424.88mm 32mm 84mm 127mm 64mm 22.86
20B43 43 434.96mm 32mm 84mm 127mm 64mm 23.40
20B44 44 445.06mm 32mm 84mm 127mm 64mm 23.95
20B45 45 455.15mm 32mm 84mm 127mm 64mm 24.49
20B46 46 465.25mm 32mm 84mm 127mm 64mm 26.31
20B47 47 475.35mm 32mm 84mm 127mm 64mm 28.12
20B48 48 485.45mm 40mm 102mm 152mm 64mm 29.94
20B49 49 495.55mm 40mm 102mm 152mm 64mm 31.76
20B50 50 505.65mm 40mm 102mm 152mm 64mm 33.57
20B51 51 515.75mm 40mm 102mm 152mm 64mm 35.39
20B52 52 525.85mm 40mm 102mm 152mm 64mm 37.21
20B53 53 535.95mm 40mm 102mm 152mm 64mm 39.02

20B C-Hub Sprockets:


Sprocket Size
Tooth Count
Pitch Diameter
Stock Bore
Maximum Bore
Hub Diameter
Length Thru Bore (LTB)
Sprocket Weight (kg)
20C54 54 546.05mm 40mm 102mm 152mm 82mm 32.90
20C55 55 556.15mm 40mm 102mm 152mm 82mm 34.77
20C56 56 566.25mm 40mm 102mm 152mm 82mm 36.63
20C57 57 576.35mm 40mm 102mm 152mm 82mm 38.50
20C58 58 586.45mm 40mm 102mm 152mm 82mm 40.37
20C59 59 596.56mm 40mm 102mm 152mm 82mm 42.24
20C60 60 606.66mm 40mm 102mm 152mm 82mm 44.10
20C70 70 707.68mm 40mm 133mm 178mm 95mm 65.36
20C72 72 727.89mm 40mm 133mm 178mm 95mm 67.23
20C76 76 768.30mm 40mm 133mm 178mm 95mm 70.98
20C80 80 808.71mm 40mm 133mm 178mm 95mm 74.70
20C84 84 849.13mm 40mm 133mm 178mm 95mm 78.43
20C90 90 909.76mm 40mm 133mm 178mm 95mm 84.03
20C95 95 960.28mm 40mm 133mm 178mm 114mm 117.18
20C96 96 970.38mm 40mm 133mm 178mm 114mm 117.56
20C114 114 1152.27mm 40mm 133mm 178mm 114mm 124.40

20B Taper Bushed Sprockets:


Sprocket Size
Tooth Count
Pitch Diameter
Bushing Number
Bushing Max. Bore
Dimension (L)
Dimension (C)
Sprocket Weight (kg)
Bushing Weight (kg)
20BTB11H 11 112.70mm 1615 41.28mm 38.10mm 62.69mm 1.22 0.54
20BTB12H 12 122.67mm 1615 41.28mm 38.10mm 70.64mm 1.41 0.54
20BTB13H 13 132.67mm 2012 50.80mm 31.75mm 90.47mm 1.45 0.77
20BTB14H 14 142.68mm 2012 50.80mm 31.75mm 90.47mm 1.63 0.77
20BTB15H 15 152.71mm 2517 63.50mm 44.45mm 107.95mm 2.31 1.59
20BTB16H 16 162.75mm 2517 63.50mm 44.45mm 107.95mm 2.72 1.59
20BTB17H 17 172.79mm 2517 63.50mm 44.45mm 107.95mm 3.27 1.59
20BTB18H 18 182.84mm 2517 63.50mm 44.45mm 107.95mm 3.63 1.59
20BTB19H 19 192.90mm 2517 63.50mm 44.45mm 107.95mm 4.09 1.59
20BTB20H 20 202.96mm 2517 63.50mm 44.45mm 107.95mm 4.40 1.59
20BTB21H 21 213.03mm 2517 63.50mm 44.45mm 107.95mm 4.54 1.59
20BTB22H 22 223.10mm 2517 63.50mm 44.45mm 107.95mm 4.77 1.59
20BTB23H 23 233.17mm 2517 63.50mm 44.45mm 107.95mm 5.58 1.59
20BTB24H 24 243.25mm 2517 63.50mm 44.45mm 107.95mm 6.13 1.59
20BTB25H 25 253.32mm 2517 63.50mm 44.45mm 107.95mm 6.95 1.59
20BTB26H 26 263.41mm 2517 63.50mm 44.45mm 107.95mm 7.35 1.59
20BTB28H 28 283.57mm 3020 76.20mm 50.80mm 133.35mm 7.90 2.95
20BTB30H 30 303.75mm 3020 76.20mm 50.80mm 133.35mm 9.62 2.95
20BTB32 32 323.92mm 3020 76.20mm 50.80mm 133.35mm 11.03 2.95
20BTB35 35 354.20mm 3020 76.20mm 50.80mm 133.35mm 13.15 2.95
20BTB36 36 364.29mm 3020 76.20mm 50.80mm 133.35mm 13.86 2.95
20BTB38 38 384.48mm 3020 76.20mm 50.80mm 133.35mm 15.98 2.95
20BTB40 40 404.67mm 3020 76.20mm 50.80mm 133.35mm 19.43 2.95
20BTB45 45 455.15mm 3020 76.20mm 50.80mm 133.35mm 25.18 2.95
20BTB48 48 485.45mm 3020 76.20mm 50.80mm 133.35mm 28.62 2.95
20BTB54 54 546.05mm 3020 76.20mm 50.80mm 133.35mm 35.52 2.95
20BTB57 57 576.35mm 3020 76.20mm 50.80mm 133.35mm 37.82 2.95
20BTB60 60 606.66mm 3020 76.20mm 50.80mm 133.35mm 41.27 2.95
20CTB70 70 707.68mm 3535 88.90mm 88.90mm 171.45mm 51.56 6.35
20CTB72 72 727.89mm 3535 88.90mm 88.90mm 171.45mm 53.97 6.35
20CTB76 76 768.30mm 3535 88.90mm 88.90mm 171.45mm 60.33 6.35
20CTB80 80 808.71mm 3535 88.90mm 88.90mm 171.45mm 66.23 6.35
20CTB84 84 849.13mm 3535 88.90mm 88.90mm 171.45mm 73.48 6.35
20CTB90 90 909.76mm 3535 88.90mm 88.90mm 171.45mm 94.33 6.35
20CTB95 95 960.28mm 3535 88.90mm 88.90mm 171.45mm 96.16 6.35

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Most of our products are exported to Europe or Americas, both standard and nonstandard products available. We can produce as per your drawing or sample. Material can be standard or as per your special request. If you choose us, you choose reliable.

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