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Product Specifications:
| Item | Roller Chain Sprocket |
| Bore Dia. | 1 1/4" |
| Bore Size | 1 1/4" |
| Bore Type | Finished Bore |
| Chain Number | 50 |
| Chain Pitch | 5/8" |
| Chain Size | #50 |
| Construction | Solid With Recess |
| Construction Type | Solid With Recess |
| Finished Bore Size | 1 1/4" |
| For Chain Number | 50 |
| For Chain Pitch | 5/8" |
| Hub Configuration | B |
| Hub Dia. | 1.984" |
| Hub Outside Dia. | 1.9844" |
| Hub Recessed For Chain | 1 |
| Individually Packaged | Yes |
| Key Way Size | 1/4" x 1/8" |
| Length Thru Bore | 1" |
| Material | Steel |
| No. Of Chain Rows | 1 |
| No. Of Teeth | 12 |
| Outside Dia. | 2.708" |
| Pitch | 5/8" |
| Pitch Dia. | 2.4148" , 2.415" |
| 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 | 0.343" |
| Storage Dimension Height | 1.06" |
| Storage Dimension Length | 3 1/4" |
| Storage Dimension Width | 3 1/4" |
| Type | Bored to Size Type BS |
Shipping Info:
| Ship weight (kg) | 0.23 |
| Ship height (cm) | 2.69 |
| Ship length (cm) | 6.88 |
| Ship width (cm) | 6.88 |
| Country of Origin | US |
Product Variants
| Product | Model | Pitch Dia. | No. Of Teeth | Length Through Bore | Set Screw Size | Key Way Size | Construction Type | Hub Dia. | Bore Dia. | Price | |
|---|---|---|---|---|---|---|---|---|---|---|---|
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50BS9 5/8 | 1.827" | 9 | 1" | 1/4"-20 | 3/16" x 3/32" | Solid With Recess Groove | 1 3/8" | 5/8" | €40.29 | |
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50BS9 3/4 | 1.827" | 9 | 1" | 1/4"-20 | 3/16" x 3/32" | Solid With Recess Groove | 1 3/8" | 3/4" | €40.29 | |
![]() |
50BS10 5/8 | 2.023" | 10 | 1" | 1/4"-20 | 3/16" x 3/32" | Solid With Recess | 1.563" | 5/8" | €43.29 | |
![]() |
50BS10 3/4 | 2.023" | 10 | 1" | 1/4"-20 | 3/16" x 3/32" | Solid With Recess | 1.563" | 3/4" | €43.29 | |
![]() |
50BS10 7/8 | 2.023" | 10 | 1" | 1/4"-20 | 3/16" x 3/32" | Solid With Recess | 1.563" | 7/8" | €43.29 | |
![]() |
50BS10 1 | 2.023" | 10 | 1" | 5/16"-18 | 1/4" x 1/8" | Solid With Recess | 1.563" | 1" | €43.29 | |
![]() |
50BS11 5/8 | 2.218" | 11 | 1" | 1/4"-20 | 3/16" x 3/32" | Solid With Recess Groove | 1 3/4" | 5/8" | €45.21 |
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Contact us
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MARTIN SPROCKET 50BS12 1 1/4 Roller Chain Sprocket, Bore To Size, 1.250 Inch Bore, 2.708 Inch Outside Dia. Steel
€46.86 /unit







