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Product Specifications:
| Item | Roller Chain Sprocket |
| Bore Dia. | 1 3/8" |
| Bore Type | Finished Bore |
| Chain Number | 41 |
| Chain Pitch | 1/2" |
| Chain Size | #41 |
| Construction | Welded |
| Construction Type | Welded |
| Finished Bore Size | 1 3/8" |
| For Chain Number | 41 |
| For Chain Pitch | 1/2" |
| Hub Configuration | B |
| Hub Dia. | 4" |
| Hub Outside Dia. | 4" |
| Individually Packaged | No |
| Key Way Size | 5/16" x 5/32" |
| Length Through Bore | 1.188" |
| Material | Steel |
| No. Of Chain Rows | 1 |
| No. Of Teeth | 80 |
| Pitch | 1/2" |
| Pitch Dia. | 12.7357" |
| Screw Size | 5/16"-18 x 5/16" |
| Set Screw Location | (1) Over Keyway And (1) At 90° |
| Set Screw Size | 5/16"-18 |
| Set Screw Thread Type | Coarse |
| Single Strand Tooth Thickness | 0.227" |
| Storage Dimension Height | 1.19" |
| Storage Dimension Length | 13.026" |
| Storage Dimension Width | 13.026" |
| Type | Type B Bored to Size Single Strand Welded |
Shipping Info:
| Ship weight (kg) | 4.77 |
| Ship height (cm) | 3.02 |
| Ship length (cm) | 33.1 |
| Ship width (cm) | 33.1 |
| Country of Origin | US |
Product Variants
| Product | Model | Pitch Dia. | No. Of Teeth | Length Through Bore | Hub Dia. | Bore Dia. | Hub Outside Dia. | Finished Bore Size | Set Screw Size | Price | |
|---|---|---|---|---|---|---|---|---|---|---|---|
![]() |
41BS9 1/2 | 1.462" | 9 | 7/8" | 1 1/8" | 1/2" | 1 1/8" | 1/2" | #10-24 | €27.97 | |
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41BS9 5/8 | 1.462" | 9 | 7/8" | 1 1/8" | 5/8" | 1 1/8" | 5/8" | 1/4"-20 | €27.97 | |
![]() |
41BS10 1/2 | 1.618" | 10 | 7/8" | 1 1/4" | 1/2" | 1 1/4" | 1/2" | #10-24 | €29.33 | |
![]() |
41BS10 5/8 | 1.618" | 10 | 7/8" | 1 1/4" | 5/8" | 1 1/4" | 5/8" | 1/4"-20 | €29.33 | |
![]() |
41BS10 3/4 | 1.618" | 10 | 7/8" | 1 1/4" | 3/4" | 1 1/4" | 3/4" | 1/4"-20 | €29.33 | |
![]() |
41BS11 1/2 | 1.7747" | 11 | 7/8" | 1 3/8" | 1/2" | 1 7/16" | 1/2" | #10-24 | €30.42 | |
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41BS11 5/8 | 1.775" | 11 | 7/8" | 1 3/8" | 5/8" | 1 7/16" | 5/8" | 1/4"-20 | €30.42 |
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Contact us
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MARTIN SPROCKET 41BS80 1 3/8 Roller Chain Sprocket, Bore To Size, 1.375 Inch Bore, 13.026 Inch Outside Dia. Steel
€181.98 /unit







