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Product Specifications:
| Item | Roller Chain Sprocket |
| Material | High Carbon Steel |
| No. Of Teeth | 21 |
| Number Of Teeth | 21 |
| Outside Dia. | 92.577 mm |
| Pitch | 12.7 mm |
| Pitch Dia. | 85.211 mm |
| Product Datasheet | martin-sprocket-06a15.pdf |
Shipping Info:
| Ship weight (kg) | 1.81 |
| Ship height (cm) | 5.51 |
| Ship length (cm) | 9.25 |
| Ship width (cm) | 9.25 |
| Country of Origin | US |
Documentation:
Product Variants
| Product | Model | Pitch Dia. | Outside Dia. | Number Of Teeth | Length Through Bore | Pitch | Price | |
|---|---|---|---|---|---|---|---|---|
![]() |
E08B14 | 57.073 mm | 64.439 mm | 14 | 50.013 mm | 12.7 mm | €237.82 | |
![]() |
E08B15 | 61.084 mm | 68.45 mm | 15 | 50.013 mm | 12.7 mm | €239.76 | |
![]() |
E08B16 | 65.098 mm | 72.464 mm | 16 | 50.013 mm | 12.7 mm | €246.00 | |
![]() |
E08B17 | 69.116 mm | 76.482 mm | 17 | 50.013 mm | 12.7 mm | €257.87 | |
![]() |
E08B18 | 73.136 mm | 80.502 mm | 18 | 50.013 mm | 12.7 mm | €273.12 | |
![]() |
E08B19 | 77.159 mm | 84.525 mm | 19 | 50.013 mm | 12.7 mm | €286.48 | |
![]() |
E08B20 | 81.184 mm | 88.55 mm | - | 50.013 mm | 12.7 mm | €303.70 |
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MARTIN SPROCKET E08B21 Roller Chain Sprocket, 21 Teeth, 85.211 mm Pitch Dia., 92.577 mm O.D., Steel
€321.77 /unit






