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Product Specifications:
| Item | Roller Chain Sprocket |
| Bore Dia. | 20 mm |
| Chain Size | 12B-2 |
| Hub Dia. | 110.007 mm |
| Length Through Bore | 50.013 mm |
| Material | Steel |
| No. Of Teeth | 23 |
| Outside Dia. | 151.65 mm |
| Pitch | 19.05 mm |
| Pitch Dia. | 139.902 mm |
| Type | Double Strand Metric Solid Stock Bore Type B |
Shipping Info:
| Ship weight (kg) | 4.76 |
| Ship height (cm) | 5 |
| Ship length (cm) | 15.16 |
| Ship width (cm) | 15.16 |
| Country of Origin | US |
Product Variants
| Product | Model | Bore Dia. | Pitch Dia. | Outside Dia. | Hub Dia. | Length Through Bore | Pitch | Price | |
|---|---|---|---|---|---|---|---|---|---|
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D12B11 | 16 mm to 32 mm | 67.617 mm | 79.365 mm | 46.99 mm | 50.013 mm | 19.05 mm | €207.47 | |
![]() |
D12B12 | 16 mm to 36 mm | 73.604 mm | 85.351 mm | 53.01 mm | 50.013 mm | 19.05 mm | €215.67 | |
![]() |
D12B13 | 16 mm | 79.602 mm | 91.349 mm | 59.004 mm | 50.013 mm | 19.05 mm | €233.74 | |
![]() |
D12B14 | 16 mm to 45 mm | 85.61 mm | 97.357 mm | 64.999 mm | 50.013 mm | 19.05 mm | €246.00 | |
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D12B15 | 16 mm to 50 mm | 91.625 mm | 103.373 mm | 70.993 mm | 50.013 mm | 19.05 mm | €255.90 | |
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D12B16 | 20 mm | 97.647 mm | 109.395 mm | 76.987 mm | 50.013 mm | 19.05 mm | €274.21 | |
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D12B17 | 20 mm to 57 mm | 103.674 mm | 115.421 mm | 83.007 mm | 50.013 mm | 19.05 mm | €289.06 |
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MARTIN SPROCKET D12B23 Sprocket, 12B-2 Chain, 23 Teeth, 139.902 mm Pitch Dia., 151.650 mm O.D., Steel
€370.18 /unit







