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12B-2 Metric Roller Chain Sprockets

12B-2 roller chain sprockets are manufactured for metric 12B-2 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 B-Hub, C-Hub, and taper bushed type but others are available upon request.

Double Pitch Sprockets-9

12B-2 B-Hub Sprockets:

Sprocket Size
Tooth Count
Pitch Diameter
Stock Bore
Maximum Bore
Hub Diameter (H)
Length Thru Bore (L)
Sprocket Weight (kg)
D12B11 11 67.62mm 16mm 32mm 47mm 50mm 1.00
D12B12 12 73.60mm 16mm 36mm 53mm 50mm 1.23
D12B13 13 79.60mm 16mm 38mm 59mm 50mm 1.41
D12B14 14 85.61mm 16mm 42mm 65mm 50mm 1.68
D12B15 15 91.63mm 16mm 45mm 71mm 50mm 1.95
D12B16 16 97.65mm 20mm 51mm 77mm 50mm 2.27
D12B17 17 103.67mm 20mm 54mm 83mm 50mm 2.63
D12B18 18 109.70mm 20mm 60mm 89mm 50mm 3.18
D12B19 19 115.74mm 20mm 62mm 95mm 50mm 3.50
D12B20 20 121.78mm 20mm 64mm 100mm 50mm 3.72
D12B21 21 127.82mm 20mm 64mm 100mm 50mm 4.31
D12B22 22 133.86mm 20mm 64mm 100mm 50mm 4.77
D12B23 23 139.90mm 20mm 73mm 110mm 50mm 4.99
D12B24 24 145.95mm 20mm 73mm 110mm 50mm 5.45
D12B25 25 151.99mm 20mm 80mm 120mm 50mm 5.67
D12B26 26 158.04mm 20mm 80mm 120mm 50mm 6.13
D12B27 27 164.09mm 20mm 80mm 120mm 50mm 6.49
D12B28 28 170.14mm 20mm 80mm 120mm 50mm 6.81
D12B29 29 176.19mm 20mm 80mm 120mm 50mm 7.13
D12B30 30 182.25mm 20mm 80mm 120mm 50mm 7.49
D12B32 32 194.35mm 20mm 85mm 130mm 50mm 9.31
D12B35 35 212.52mm 20mm 85mm 130mm 50mm 10.18
D12B36 36 218.57mm 25mm 85mm 130mm 50mm 12.31
D12B38 38 230.69mm 25mm 85mm 130mm 50mm 12.99
D12B40 40 242.80mm 25mm 85mm 130mm 50mm 13.67
D12B45 45 273.09mm 25mm 85mm 130mm 50mm 15.38
D12B48 48 291.27mm 25mm 85mm 130mm 50mm 16.41
D12B57 57 345.81mm 32mm 85mm 130mm 65mm 25.34
D12B60 60 363.99mm 32mm 85mm 130mm 65mm 26.67
D12C68 68 412.49mm 32mm 85mm 130mm 75mm 30.48
D12C76 76 460.98mm 40mm 85mm 130mm 75mm 25.63
D12C80 80 485.23mm 40mm 85mm 130mm 75mm 26.98
D12C95 95 576.17mm 40mm 93mm 140mm 85mm 39.24
D12C96 96 582.23mm 40mm 93mm 140mm 85mm 39.65
D12C114 114 691.36mm 40mm 93mm 140mm 85mm 41.86

12B-2 Taper Bushed Sprockets:


Sprocket Size
Tooth Count
Pitch Diameter
Bushing Number
Bushing Max. Bore
Dimension (L)
Dimension (C)
Sprocket Weight (kg)
Bushing Weight (kg)
D12BTB12 12 73.60mm 1215 31.75mm 38.10mm 53.54mm 0.61 0.73
D12BTB13 13 79.60mm 1215 31.75mm 38.10mm 59.74mm 0.66 0.73
D12BTB14 14 85.61mm 1215 31.75mm 38.10mm 65.91mm 0.84 0.73
D12BTB15 15 91.63mm 1615 41.28mm 38.10mm 72.09mm 0.70 0.77
D12BTB16 16 97.65mm 1615 41.28mm 38.10mm 76.20mm 1.11 0.77
D12BTB17 17 103.67mm 1615 41.28mm 38.10mm 82.93mm 1.25 0.77
D12BTB18 18 109.70mm 2012 50.80mm 31.75mm 90.50mm 1.56 0.77
D12BTB19 19 115.74mm 2012 50.80mm 31.75mm 86.60mm 1.81 0.77
D12BTB20 20 121.78mm 2517 63.50mm 44.45mm 102.00mm 2.04 1.59
D12BTB21 21 127.82mm 2517 63.50mm 44.45mm 107.95mm 2.50 1.59
D12BTB22 22 133.86mm 2517 63.50mm 44.45mm 107.95mm 2.78 1.59
D12BTB23 23 139.90mm 2517 63.50mm 44.45mm 107.95mm 3.07 1.59
D12BTB24 24 145.95mm 2517 63.50mm 44.45mm 107.95mm 3.35 1.59
D12BTB25 25 151.99mm 2517 63.50mm 44.45mm 107.95mm 3.63 1.59
D12BTB26 26 158.04mm 2517 63.50mm 44.45mm 107.95mm 3.91 1.59
D12BTB27 27 164.09mm 2517 63.50mm 44.45mm 107.95mm 4.20 1.59
D12BTB28 28 170.14mm 2517 63.50mm 44.45mm 107.95mm 4.48 1.59
D12BTB30 30 182.25mm 2517 63.50mm 44.45mm 107.95mm 5.04 1.59
D12BTB32 32 194.35mm 2517 63.50mm 44.45mm 107.95mm 5.61 1.59
D12BTB35 35 212.52mm 2517 63.50mm 44.45mm 107.95mm 6.46 1.59
D12CTB38 38 230.69mm 2517 63.50mm 44.45mm 107.95mm 8.40 1.59
D12CTB40 40 242.80mm 2517 63.50mm 44.45mm 107.95mm 9.56 1.59
D12CTB42 42 254.92mm 2517 63.50mm 44.45mm 107.95mm 10.73 1.59
D12CTB45 45 273.09mm 2517 63.50mm 44.45mm 107.95mm 12.48 1.59
D12CTB48 48 291.27mm 2517 63.50mm 44.45mm 107.95mm 14.23 1.59
D12CTB54 54 327.63mm 2517 63.50mm 44.45mm 107.95mm 17.73 1.59
D12CTB57 57 345.81mm 2517 63.50mm 44.45mm 107.95mm 19.48 1.59
D12CTB60 60 363.99mm 2517 63.50mm 44.45mm 107.95mm 21.23 1.59
D12CTB65 65 394.30mm 2517 63.50mm 44.45mm 107.95mm 24.15 1.59
D12CTB70 70 424.61mm 2517 63.50mm 44.45mm 107.95mm 27.06 1.59
D12CTB75 75 454.92mm 3020 76.20mm 50.80mm 133.35mm 19.27 2.95
D12CTB76 76 460.98mm 3020 76.20mm 50.80mm 133.35mm 19.52 2.95
D12CTB84 84 509.48mm 3020 76.20mm 50.80mm 133.35mm 21.58 2.95
D12CTB95 95 576.17mm 3020 76.20mm 50.80mm 133.35mm 24.40 2.95
D12CTB96 96 582.23mm 3020 76.20mm 50.80mm 133.35mm 24.66 2.95
D12CTB114 114 691.36mm 3020 76.20mm 50.80mm 133.35mm 29.28 2.95

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