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Product Specifications:
| Item | Roller Chain Sprocket |
| Bore Diameter | 1 3/8" |
| Bore Size | 1 3/8" |
| Bore Type | Finished Bore |
| Chain Number | 50 |
| Chain Pitch | 5/8" |
| Construction | Solid |
| Construction Type | Solid |
| Finished Bore Size | 1 3/8" |
| For Chain Number | 50 |
| For Chain Pitch | 5/8" |
| Hardened Teeth | 1 |
| Hub Configuration | B |
| Hub Diameter | 2 7/8" |
| Hub Outside Dia. | 2 7/8" |
| Individually Packaged | Yes |
| Keyway Size | 5/16" x 5/32" |
| Length Through Bore | 1" |
| Length Thru Bore | 1" |
| Material | Steel |
| Max. Bore Size | 1 7/8" |
| Min. Bore Size | 1 3/8" |
| No. Of Teeth | 18 |
| Number Of Chain Rows | 1 |
| Number Of Teeth | 18 |
| Outside Dia. | 3 23/25" |
| Pitch | 5/8" |
| Pitch Dia. | 3.5992" |
| Pitch Diameter | 3.599" |
| 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 | 0.343" |
| Storage Dimension Height | 1.06" |
| Storage Dimension Length | 4 5/16" |
| Storage Dimension Width | 4 5/16" |
Shipping Info:
| Ship weight (kg) | 0.72 |
| Ship height (cm) | 2.69 |
| Ship length (cm) | 9.96 |
| Ship width (cm) | 9.96 |
| Country of Origin | US |
Product Variants
| Product | Model | Number Of Teeth | Pitch Dia. | Outside Dia. | Length Through Bore | Set Screw Size | Bore Size | For Chain Number | For Chain Pitch | Price | |
|---|---|---|---|---|---|---|---|---|---|---|---|
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50BS9HT 5/8 | 9 | 1.8274" | 2.092" | 1" | 1/4"-20 | 5/8" | 50 | 5/8" | €59.77 | |
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50BS9HT 3/4 | 9 | 1.8274" | 2.092" | 1" | 1/4"-20 | 3/4" | 50 | 5/8" | €59.77 | |
![]() |
50BS10HT 5/8 | 10 | 2.0225" | 2.299" | 1" | 1/4"-20 | 5/8" | 50 | 5/8" | €64.57 | |
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50BS10HT 3/4 | 10 | 2.0225" | - | 1" | 1/4"-20 | 3/4" | 50 | 5/8" | €64.57 | |
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50BS10HT 7/8 | 10 | 2.0225" | 2.299" | 1" | 1/4"-20 | 7/8" | 50 | 5/8" | €64.57 | |
![]() |
50BS11HT 3/4 | 11 | 2.2184" | 2.504" | 1 3/4" | 1/4"-20 | 3/4" | 50 | 5/8" | €67.65 | |
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50BS11HT 7/8 | 11 | 2.2184" | 2.504" | 1 3/4" | 1/4"-20 | 7/8" | 50 | 5/8" | €67.65 |
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Contact us
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MARTIN SPROCKET 50BS18HT 1 3/8 Roller Chain Sprocket, 1.375 Inch Bore, 3.920 Inch Outside Dia. Steel, Hardened
€99.47 /unit




