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Product Specifications:
| Item | Roller Chain Sprocket |
| Bore Dia. | 1" |
| Bore Type | Finished Bore |
| Chain Number | 80 |
| Chain Pitch | 1" |
| Chain Size | #80 |
| Construction Type | Welded |
| Finished Bore Size | 1" |
| For Chain Number | 80 |
| For Chain Pitch | 1" |
| Hub Configuration | B |
| Hub Dia. | 4 1/4" |
| Hub Outside Dia. | 4 1/4" |
| Individually Packaged | No |
| Length Through Bore | 1 1/2" |
| Length Thru Bore | 1 1/2" |
| Material | Steel |
| Max. Bore Size | 2 3/4" |
| Min. Bore Size | 1" |
| No. Of Chain Rows | 1 |
| No. Of Teeth | 20 |
| Outside Dia. | 6.914" |
| Pitch | 1" |
| Pitch Dia. | 6.3925" , 6.393" |
| Single Strand Tooth Thickness | 0.575" |
| Storage Dimension Height | 1 1/2" |
| Storage Dimension Length | 6.91" |
| Storage Dimension Width | 6.91" |
| Type | Stock Bore Type B |
Shipping Info:
| Ship weight (kg) | 3.69 |
| Ship height (cm) | 3.81 |
| Ship length (cm) | 17.55 |
| Ship width (cm) | 17.55 |
| Country of Origin | US |
Product Variants
| Product | Model | Material | Pitch Dia. | No. Of Teeth | Length Through Bore | Hub Dia. | Bore Dia. | Storage Dimension Length | Storage Dimension Width | Price | |
|---|---|---|---|---|---|---|---|---|---|---|---|
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80B8 | Steel | 2.6131" | 8 | 1 5/8" | 1.938" | 1" | 3.01" | 3.01" | €66.60 | |
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80B9 | Steel | 2.9238" | 9 | 1 5/8" | 2 1/4" | 1" | 3.35" | 3.35" | €66.60 | |
![]() |
80B10 | Steel | 3.236" | 10 | 1 5/8" | 2.563" | 1" | 3 3/4" | 3 3/4" | €72.64 | |
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80B11 | Steel | 3.55" | 11 | 1 5/8" | 2.813" | 1" | 4 1/16" | 4 1/16" | €80.01 | |
![]() |
80B12 | Steel | 3.864" | 12 | 1 5/8" | 3 1/8" | 1" | 4 7/16" | 4 7/16" | €86.05 | |
![]() |
80B13 | Steel | 4.179" | 13 | 1 1/2" | 3" | 1" | 4 3/4" | 4 3/4" | €92.64 | |
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80B14 | Steel | 4.494" | 14 | 1 1/2" | 3 1/4" | 1" | 5 1/8" | 5 1/8" | €93.31 |
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Contact us
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MARTIN SPROCKET 80B20 Sprocket, Stock Bore, 80 Chain, 20 Teeth, 6.393 Inch Pitch Dia., 6.914 Inch O.D., Steel
€148.50 /unit







