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Product Specifications:
| Item | Roller Chain Sprocket |
| Bore Diameter | 1 3/8" |
| Bore Type | Finished Bore |
| Chain Number | 120 |
| Chain Pitch | 1 1/2" |
| Construction | Solid |
| Construction Type | Solid |
| Finished Bore Size | 1 3/8" |
| For Chain Number | 120 |
| For Chain Pitch | 1 1/2" |
| Hub Configuration | B |
| Hub Diameter | 3 3/8" |
| Hub Outside Dia. | 3 3/8" |
| Hub Recessed For Chain | 1 |
| Individually Packaged | No |
| Length Through Bore | 2 1/4" |
| Length Thru Bore | 2 1/4" |
| Material | Steel |
| Max. Bore Size | 1 13/16" |
| Min. Bore Size | 1 3/8" |
| Number Of Chain Rows | 1 |
| Number Of Teeth | 9 |
| Outside Dia. | 5.021" |
| Pitch | 1 1/2" |
| Pitch Dia. | 4.3857" |
| Single Strand Tooth Thickness | 0.924" |
| Storage Dimension Height | 2 1/4" |
| Storage Dimension Length | 5.02" |
| Storage Dimension Width | 5.02" |
Shipping Info:
| Ship weight (kg) | 2.39 |
| Ship height (cm) | 5.72 |
| Ship length (cm) | 12.75 |
| Ship width (cm) | 12.75 |
| Country of Origin | US |
Product Variants
| Product | Model | Number Of Teeth | Pitch Dia. | Outside Dia. | Bore Type | Length Through Bore | For Chain Number | For Chain Pitch | Pitch | Price | |
|---|---|---|---|---|---|---|---|---|---|---|---|
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120B10 | 10 | 4.8541" | 5.517" | Finished Bore | 2 1/8" | 120 | 1 1/2" | 1 1/2" | €232.43 | |
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120B11 | 11 | 5.3242" | 6.009" | Finished Bore | 2 1/8" | 120 | 1 1/2" | 1 1/2" | €256.97 | |
![]() |
120B12 | 12 | 5.7956" | 6.498" | Finished Bore | 2 1/8" | 120 | 1 1/2" | 1 1/2" | €290.91 | |
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120B13 | 13 | 6.2679" | 6.986" | Finished Bore | 2 1/4" | 120 | 1 1/2" | 1 1/2" | €279.14 | |
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120B14 | 14 | 6.7409" | 7.472" | Rough Bore | 2 1/4" | 120 | 1 1/2" | 1 1/2" | €307.56 | |
![]() |
120B15 | 15 | 7.2146" | 7.957" | Finished Bore | 2 3/8" | 120 | 1 1/2" | 1 1/2" | €357.48 | |
![]() |
120B16 | 16 | 7.689" | 8.441" | Finished Bore | 2 3/8" | 120 | 1 1/2" | 1 1/2" | €383.76 |
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Contact us
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MARTIN SPROCKET 120B9 Sprocket, 120 Chain, 9 Teeth, 4.386 Inch Pitch Dia., 5.021 Inch O.D., Steel
€212.04 /unit







