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The BlackStar 120B21 is a 120 pitch B-Hub roller chain sprocket with 21 teeth, precision manufactured from SAE 1045 steel and features machine-cut tooth profiles for smooth, reliable chain engagement.
| Specifications | |
|---|---|
| Part Number | 120B21 |
| Chain Pitch | 120 |
| Number of Teeth | 21 |
| Minimum Bore | 1-1/4" |
| Maximum Bore | 3-1/2" |
| Bore Type | Plain Bore |
| Hub Style | B-Hub |
| Strand Count | Single |
| Material | Steel |
| Outside Diameter | 10.85" |
| Pitch Diameter | 10.065" |
| Approx. Weight | 26.7 lbs |

Cross-references: Browning H120B21, Martin 120BS21, Boston Gear RS120B21
Ships within 48 hours · Estimated delivery Jun 29 - Jul 4
US$40
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