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- 08B-1 Chain Number
- 1 Strand
- 21 Teeth
- Without Hardened Teeth
- B Sprocket Style
description
- Maximum bores shown will accommodate standard keyseat and setscrew over keyseat. Slightly larger bores are possible with no keyseat, shallow keyseat, or setscrew at an angle to keyseat.
features
- Manufactured of high carbon steel
- Precise machining and processes ensure consistent finish and high quality
- Bores are concentric to pitch line, minimizing run out
- Chain rows are parallel and precisely spaced to increase longevity of sprocket and chain
| Material | Steel |
| Chain Pitch | 12.7 mm |
| Bore Type | Reborable |
| Hardened Teeth | Without Hardened Teeth |
| Pitch Diameter [Min] | 85.2 mm |
| Root Diameter | 76.7 mm |
| Pitch Root Diameter | 76.7 mm |
| Inch/Metric | Metric |
| Martin No. | 08B21 |
| Hub Dia. | 70 mm |
| Length Through Bore | 27.99 mm |
| Single Strand Tooth Thickness | 7.37 mm |
| Pin Diameter | 8.509 mm |
| Outside Dia. [Min] | 92.58 mm |
| Series | B |
| Hub Length Thru | 20.63 mm |
| No. of Teeth | 21 |
| Bore Range [Min] | 12 mm |
| Bore Style | Minimum Bore |
| Caliper Diameter | 10.01 mm |
| Width Across Teeth | 20.89 mm |
| Family Name | No. 08 - 12.700 mm Pitch - Single - B |
| Bore Range [Max] | N/A |
| Chain No. | 08B, 08B-1 |
| Outside Dia. | 92.58 mm |
| Sprocket Style | B |
| No. of Strands Across | 1 |
| Pitch Diameter | 85.2 mm |
| Weight | 1.8 LB |
| EAN or UPC | 697950397009 |
