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Product Specifications:
| Item | Roller Chain Sprocket |
| Bore Diameter | 1 1/4" |
| Bore Size | 1 1/4" |
| Bore Type | Finished Bore |
| Chain Number | 80 |
| Chain Pitch | 1" |
| Construction | Welded |
| Construction Type | Welded |
| Finished Bore Size | 1 1/4" |
| For Chain Number | 80 |
| For Chain Pitch | 1" |
| Hub Configuration | B |
| Hub Diameter | 4 1/4" |
| Hub Outside Dia. | 4 1/4" |
| Individually Packaged | No |
| Keyway Size | 1/4" x 1/8" |
| Length Through Bore | 1 3/4" |
| Length Thru Bore | 1 3/4" |
| Material | Steel |
| No. Of Teeth | 21 |
| Number Of Chain Rows | 1 |
| Number Of Teeth | 21 |
| Outside Dia. | 7.235" |
| Pitch | 1" |
| Pitch Dia. | 6.7095" |
| Pitch Diameter | 6.71" |
| 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 | 0.575" |
| Storage Dimension Height | 1 3/4" |
| Storage Dimension Length | 7.235" |
| Storage Dimension Width | 7.235" |
Shipping Info:
| Ship weight (kg) | 4.23 |
| Ship height (cm) | 4.45 |
| Ship length (cm) | 18.39 |
| Ship width (cm) | 18.39 |
| Country of Origin | US |
Product Variants
| Product | Model | Number Of Teeth | Pitch Dia. | Outside Dia. | Length Through Bore | Set Screw Size | Set Screw Location | Bore Size | For Chain Number | Price | |
|---|---|---|---|---|---|---|---|---|---|---|---|
![]() |
80BS9 1 | 9 | 2.9238" | 3.347" | 1 5/8" | 5/16"-18 | (1) Over Keyway And (1) At 90° | 1" | 80 | €73.18 | |
![]() |
80BS9 1 1/8 | 9 | 2.9238" | 3.347" | 1 5/8" | 5/16"-18 | (1) Over Keyway And (1) At 90° | 1 1/8" | 80 | €73.18 | |
![]() |
80BS9 1 3/16 | 9 | 2.9238" | - | 1 5/8" | 5/16"-18 | (1) Over Keyway And (1) At 90° | 1 3/16" | 80 | €73.18 | |
![]() |
80BS10 1 | 10 | 3.2361" | 3.678" | 1 5/8" | 5/16"-18 | (1) Over Keyway And (1) At 90° | 1" | 80 | €80.59 | |
![]() |
80BS10 1 1/8 | 10 | 3.2361" | 3.678" | 1 5/8" | 5/16"-18 | (1) Over Keyway And (1) At 90° | 1 1/8" | 80 | €80.59 | |
![]() |
80BS9 1 1/4 | 9 | 2.9238" | 3.347" | 1 5/8" | 5/16"-18 | (1) Over Keyway And (1) At 90° | 1 1/4" | 80 | €73.18 | |
![]() |
80BS10 1 3/16 | 10 | 3.2361" | 3.678" | 1 5/8" | 5/16"-18 | (1) Over Keyway And (1) At 90° | - | 80 | €80.59 |
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MARTIN SPROCKET 80BS21 1 1/4 Roller Chain Sprocket, Bore To Size, 1.250 Inch Bore, 7.235 Inch Outside Dia. Steel
€173.77 /unit




