12B roller chain sprockets are manufactured for metric 12B roller chain and are made in accordance with ISO, DIN, and BS228/3 requirements. Our sprockets are precision made from substantial-good quality steel, immediately interchange with other manufactures, and are engineered for fantastic efficiency and sturdiness. Widespread styles of these sprockets incorporate B-Hub, C-Hub, and taper bushed sort but other people are accessible on request. The beneath charts present our common measurements for 12B sprockets, if you will not see the specific sprocket you require we also customized manufacture sprockets.
 
 
 
 
 
 
 
 
 
 
12B A-Plate Sprockets:
 
 
 
 
 
 
 
| Sprocket Dimensions | Tooth Rely | Pitch Diameter | Inventory Bore | Sprocket Weight (kg) |
|---|---|---|---|---|
| 12A11 | eleven | 67.62mm | 14mm | .36 |
| 12A12 | 12 | seventy three.60mm | 14mm | .42 |
| 12A13 | thirteen | 79.60mm | 14mm | .forty eight |
| 12A14 | fourteen | 85.61mm | 14mm | .54 |
| 12A15 | fifteen | ninety one.63mm | 14mm | .sixty |
| 12A16 | 16 | 97.65mm | 14mm | .68 |
| 12A17 | seventeen | 103.67mm | 14mm | .seventy seven |
| 12A18 | eighteen | 109.71mm | 14mm | .eighty five |
| 12A19 | 19 | one hundred fifteen.74mm | 14mm | .ninety five |
| 12A20 | 20 | 121.78mm | 14mm | one.08 |
| 12A21 | 21 | 127.82mm | 16mm | one.15 |
| 12A22 | 22 | 133.86mm | 16mm | one.24 |
| 12A23 | 23 | 139.90mm | 19mm | 1.33 |
| 12A24 | 24 | a hundred forty five.95mm | 19mm | 1.forty seven |
| 12A25 | twenty five | 151.99mm | 19mm | 1.sixty three |
| 12A26 | 26 | 158.04mm | 19mm | 1.72 |
| 12A27 | 27 | 164.09mm | 19mm | 1.ninety one |
| 12A28 | 28 | one hundred seventy.14mm | 19mm | 1.99 |
| 12A29 | 29 | 176.19mm | 19mm | 2.44 |
| 12A30 | 30 | 182.25mm | 19mm | 2.48 |
| 12A31 | 31 | 188.30mm | 19mm | 2.28 |
| 12A32 | 32 | 194.35mm | 19mm | two.sixty two |
| 12A33 | 33 | two hundred.41mm | 19mm | 2.77 |
| 12A34 | 34 | 206.46mm | 19mm | 2.91 |
| 12A35 | 35 | 212.52mm | 19mm | 3.19 |
| 12A36 | 36 | 218.57mm | 19mm | three.21 |
| 12A37 | 37 | 224.63mm | 19mm | three.52 |
| 12A38 | 38 | 230.69mm | 24mm | 3.67 |
| 12A39 | 39 | 236.74mm | 24mm | 3.87 |
| 12A40 | forty | 242.80mm | 24mm | four.00 |
| 12A41 | forty one | 248.86mm | 24mm | 4.24 |
| 12A42 | 42 | 254.92mm | 24mm | 4.53 |
| 12A43 | 43 | 260.98mm | 24mm | four.fifty eight |
| 12A44 | forty four | 267.03mm | 25mm | four.ninety nine |
| 12A45 | forty five | 273.09mm | 25mm | 5.14 |
| 12A46 | forty six | 279.15mm | 25mm | five.33 |
| 12A47 | 47 | 285.21mm | 25mm | 5.70 |
| 12A48 | 48 | 291.27mm | 25mm | five.seventy five |
| 12A50 | fifty | 303.39mm | 25mm | 6.45 |
| 12A54 | 54 | 327.63mm | 32mm | seven.33 |
| 12A57 | fifty seven | 345.81mm | 32mm | eight.eleven |
| 12A60 | sixty | 363.99mm | 32mm | 9.19 |
| 12A65 | sixty five | 394.30mm | 32mm | 10.65 |
| 12A70 | 70 | 424.61mm | 32mm | twelve.forty five |
| 12A72 | seventy two | 436.73mm | 32mm | thirteen.22 |
| 12A76 | 76 | 460.98mm | 32mm | fourteen.78 |
| 12A80 | 80 | 485.23mm | 32mm | 20.seventy five |
| 12A84 | eighty four | 509.48mm | 32mm | 21.78 |
| 12A95 | ninety five | 576.17mm | 32mm | 23.forty six |
| 12A96 | ninety six | 582.23mm | 32mm | 23.71 |
| 12A114 | 114 | 691.36mm | 32mm | 28.16 |
12B B-Hub Sprockets:
 
 
 
 
 
 
| Sprocket Size | Tooth Count | Pitch Diameter | Inventory Bore | Optimum Bore | Hub Diameter | Length Thru Bore (LTB) | Sprocket Bodyweight (kg) |
|---|---|---|---|---|---|---|---|
| 12B11 | 11 | sixty seven.62mm | 12mm | 32mm | 47mm | 35mm | .fifty three |
| 12B12 | twelve | 73.60mm | 12mm | 35mm | 53mm | 35mm | .sixty seven |
| 12B13 | 13 | seventy nine.60mm | 12mm | 38mm | 59mm | 35mm | .75 |
| 12B14 | fourteen | 85.61mm | 12mm | 42mm | 64mm | 35mm | .91 |
| 12B15 | 15 | 91.63mm | 12mm | 45mm | 70mm | 35mm | one.14 |
| 12B16 | sixteen | 97.65mm | 16mm | 50mm | 75mm | 35mm | 1.27 |
| 12B17 | seventeen | 103.67mm | 16mm | 52mm | 80mm | 35mm | one.46 |
| 12B18 | 18 | 109.71mm | 16mm | 52mm | 80mm | 35mm | 1.69 |
| 12B19 | 19 | 115.74mm | 16mm | 60mm | 90mm | 35mm | 1.78 |
| 12B20 | twenty | 121.78mm | 16mm | 64mm | 90mm | 35mm | 2.ten |
| 12B21 | 21 | 127.82mm | 20mm | 64mm | 100mm | 40mm | 2.27 |
| 12B22 | 22 | 133.86mm | 20mm | 64mm | 100mm | 40mm | 2.38 |
| 12B23 | 23 | 139.90mm | 20mm | 67mm | 100mm | 40mm | two.49 |
| 12B24 | 24 | one hundred forty five.95mm | 20mm | 67mm | 100mm | 40mm | 2.sixty two |
| 12B25 | twenty five | 151.99mm | 20mm | 67mm | 100mm | 40mm | two.78 |
| 12B26 | 26 | 158.04mm | 20mm | 67mm | 100mm | 40mm | two.89 |
| 12B27 | 27 | 164.09mm | 20mm | 67mm | 100mm | 40mm | 3.05 |
| 12B28 | eighty two | a hundred and seventy.14mm | 20mm | 67mm | 100mm | 40mm | 3.12 |
| 12B29 | 29 | 176.19mm | 20mm | 67mm | 100mm | 40mm | 3.30 |
| 12B30 | 30 | 182.25mm | 20mm | 67mm | 100mm | 40mm | 3.forty four |
| 12B31 | 31 | 188.30mm | 20mm | 67mm | 100mm | 40mm | 3.fifty |
| 12B32 | 32 | 194.35mm | 20mm | 67mm | 100mm | 40mm | 3.seventy five |
| 12B33 | 33 | two hundred.41mm | 20mm | 67mm | 100mm | 40mm | three.82 |
| 12B34 | 34 | 206.46mm | 20mm | 67mm | 100mm | 40mm | 3.99 |
| 12B35 | 35 | 212.52mm | 20mm | 67mm | 100mm | 40mm | 4.ten |
| 12B36 | 36 | 218.57mm | 20mm | 67mm | 100mm | 40mm | four.35 |
| 12B37 | 37 | 224.63mm | 20mm | 67mm | 100mm | 40mm | 4.64 |
| 12B38 | 38 | 230.69mm | 25mm | 70mm | 107mm | 40mm | 4.ninety two |
| 12B39 | 39 | 236.74mm | 25mm | 70mm | 107mm | 40mm | five.15 |
| 12B40 | forty | 242.80mm | 25mm | 70mm | 107mm | 40mm | 5.22 |
| 12B41 | 41 | 248.86mm | 25mm | 70mm | 107mm | 40mm | five.51 |
| 12B42 | 42 | 254.92mm | 25mm | 70mm | 107mm | 40mm | five.seventy eight |
| 12B43 | 43 | 260.98mm | 25mm | 70mm | 107mm | 40mm | 5.ninety |
| 12B44 | forty four | 267.03mm | 25mm | 70mm | 107mm | 40mm | 6.thirty |
| 12B45 | forty five | 273.09mm | 25mm | 70mm | 107mm | 40mm | six.34 |
| 12B46 | forty six | 279.15mm | 25mm | 70mm | 107mm | 40mm | 6.62 |
| 12B47 | 47 | 285.21mm | 25mm | 70mm | 107mm | 40mm | 6.eighty |
| 12B48 | 48 | 291.27mm | 25mm | 70mm | 107mm | 40mm | 7.eighteen |
| 12B50 | fifty | 303.39mm | 25mm | 70mm | 107mm | 40mm | eight.01 |
| 12B54 | 54 | 327.63mm | 32mm | 70mm | 110mm | 45mm | nine.eighty |
| 12B57 | fifty seven | 345.81mm | 32mm | 70mm | 110mm | 45mm | ten.10 |
| 12B60 | 60 | 363.99mm | 32mm | 70mm | 110mm | 45mm | 11.44 |
| 12B65 | sixty five | 394.30mm | 32mm | 70mm | 110mm | 45mm | thirteen.twelve |
| 12B70 | 70 | 424.61mm | 32mm | 70mm | 110mm | 45mm | fourteen.fifty one |
| 12B72 | seventy two | 436.73mm | 32mm | 80mm | 120mm | 50mm | 15.fifty |
| 12B76 | seventy six | 460.98mm | 32mm | 80mm | 120mm | 50mm | 17.26 |
| 12B80 | eighty | 485.23mm | 32mm | 80mm | 120mm | 50mm | 19.00 |
| 12B84 | eighty four | 509.48mm | 32mm | 80mm | 120mm | 50mm | 21.07 |
| 12B95 | ninety five | 576.17mm | 32mm | 92mm | 140mm | 55mm | 23.eighty three |
| 12B96 | ninety six | 582.23mm | 32mm | 92mm | 140mm | 55mm | 26.sixty one |
| 12B114 | 114 | 691.36mm | 32mm | 92mm | 140mm | 55mm | 33.ninety eight |
12B Taper Bushed Sprockets:
 
 
 
 
 
 
 
| Sprocket Dimension | Tooth Count | Pitch Diameter | Bushing Quantity | Bushing Max. Bore | Dimension (L) | Dimension (C) | Sprocket Fat (kg) | Bushing Weight (kg) |
|---|---|---|---|---|---|---|---|---|
| 12BTB11H | 11 | sixty seven.62mm | 1008 | 25.40mm | 22.23mm | forty six.04mm | .27 | .14 |
| 12BTB12H | twelve | 73.61mm | 1008 | 25.40mm | 22.23mm | 49.21mm | .36 | .14 |
| 12BTB13H | thirteen | 79.60mm | 1210 | 31.75mm | twenty five.40mm | sixty two.69mm | .41 | .27 |
| 12BTB14H | 14 | eighty five.61mm | 1210 | 31.75mm | 25.40mm | sixty two.69mm | .45 | .27 |
| 12BTB15H | 15 | ninety one.63mm | 1610 | 41.28mm | twenty five.40mm | 70.64mm | .54 | .41 |
| 12BTB16H | 16 | ninety seven.65mm | 1610 | 41.28mm | twenty five.40mm | seventy six.20mm | .73 | .forty one |
| 12BTB17H | seventeen | 103.67mm | 1610 | 41.28mm | twenty five.40mm | 82.55mm | .82 | .forty one |
| 12BTB18H | eighteen | 109.70mm | 1610 | 41.28mm | 25.40mm | 82.55mm | .91 | .41 |
| 12BTB19H | 19 | 115.74mm | 1610 | 41.28mm | twenty five.40mm | 82.55mm | 1.00 | .forty one |
| 12BTB20H | twenty | 121.78mm | 2012 | fifty.80mm | 31.75mm | 90.47mm | one.00 | .seventy seven |
| 12BTB21H | 21 | 127.82mm | 2012 | fifty.80mm | 31.75mm | 90.47mm | 1.18 | .77 |
| 12BTB22H | 22 | 133.86mm | 2012 | fifty.80mm | 31.75mm | ninety.47mm | 1.27 | .seventy seven |
| 12BTB23H | 23 | 139.90mm | 2012 | 50.80mm | 31.75mm | 90.47mm | one.27 | .seventy seven |
| 12BTB24H | 24 | a hundred forty five.95mm | 2012 | 50.80mm | 31.75mm | 90.47mm | one.fifty | .77 |
| 12BTB25H | twenty five | 151.99mm | 2012 | fifty.80mm | 31.75mm | 90.47mm | 1.seventy four | .77 |
| 12BTB26H | 26 | 158.04mm | 2012 | 50.80mm | 31.75mm | ninety.47mm | 1.74 | .seventy seven |
| 12BTB27H | 27 | 164.09mm | 2012 | 50.80mm | 31.75mm | 90.47mm | 1.eighty | .77 |
| 12BTB28H | 28 | 170.14mm | 2012 | 50.80mm | 31.75mm | 90.47mm | two.04 | .seventy seven |
| 12BTB30H | 30 | 182.25mm | 2012 | 50.80mm | 31.75mm | ninety.47mm | 2.32 | .seventy seven |
| 12BTB32 | 32 | 194.35mm | 2012 | 50.80mm | 31.75mm | 90.47mm | 2.forty eight | .77 |
| 12BTB35 | 35 | 212.52mm | 2012 | fifty.80mm | 31.75mm | ninety.47mm | 2.seventy one | .77 |
| 12BTB36 | 36 | 218.57mm | 2012 | fifty.80mm | 31.75mm | ninety.47mm | 2.seventy eight | .seventy seven |
| 12BTB38 | 38 | 230.69mm | 2012 | fifty.80mm | 31.75mm | ninety.47mm | 3.36 | .77 |
| 12BTB40 | forty | 242.80mm | 2012 | fifty.80mm | 31.75mm | 90.47mm | three.fifty three | .seventy seven |
| 12BTB42 | forty two | 254.92mm | 2012 | 50.80mm | 31.75mm | ninety.47mm | three.71 | .77 |
| 12BTB45 | 45 | 273.09mm | 2012 | 50.80mm | 31.75mm | ninety.47mm | 3.98 | .77 |
| 12BTB48 | forty eight | 291.27mm | 2012 | fifty.80mm | 31.75mm | ninety.47mm | four.24 | .seventy seven |
| 12BTB54 | fifty four | 327.63mm | 2517 | sixty three.50mm | forty four.45mm | 107.95mm | eight.30 | one.59 |
| 12BTB57 | 57 | 345.81mm | 2517 | sixty three.50mm | 44.45mm | 107.95mm | 8.seventy six | one.fifty nine |
| 12BTB60 | 60 | 363.99mm | 2517 | sixty three.50mm | 44.45mm | 107.95mm | 9.22 | one.fifty nine |
| 12BTB68 | sixty eight | 412.49mm | 2517 | 63.50mm | forty four.45mm | 107.95mm | ten.45 | 1.fifty nine |
| 12BTB70 | 70 | 424.61mm | 2517 | sixty three.50mm | 44.45mm | 107.95mm | 10.seventy six | 1.fifty nine |
| 12BTB72 | seventy two | 436.73mm | 2517 | 63.50mm | 44.45mm | 107.95mm | eleven.06 | 1.fifty nine |
| 12BTB76 | seventy six | 460.98mm | 2517 | sixty three.50mm | 44.45mm | 107.95mm | 11.sixty eight | one.fifty nine |
| 12BTB84 | 84 | 509.48mm | 2517 | sixty three.50mm | forty four.45mm | 107.95mm | twelve.ninety one | 1.fifty nine |
| 12BTB95 | ninety five | 576.17mm | 2517 | 63.50mm | forty four.45mm | 107.95mm | fourteen.sixty | one.59 |
| 12BTB96 | ninety six | 582.23mm | 2517 | sixty three.50mm | 44.45mm | 107.95mm | 14.75 | 1.59 |
| 12BTB114 | 114 | 691.36mm | 2517 | sixty three.50mm | forty four.45mm | 107.95mm | 17.fifty two | one.fifty nine |