Find a Service Center
Martin
D08BTB21
Double Strand Sprocket; 08B-2 Chain Size; 21 Teeth; Requires 1610 Taper Lock Bushing
Item #100965955
- Double Strand Sprocket
- 08B-2 Chain Size
- 21 Teeth
- Requires Taper Lock 1610 Bushing
- Without Hardened Teeth
features
- Tolerances meet or exceed ISO standards
- 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
- Interchangeable with other manufacturers’ taper bushings
| Material Internal Use | Carbon Steel |
| Length Through Bore | 1 in |
| Type | B |
| Overall Length | 25.4 mm |
| Material | Steel |
| Construction Internal | Solid |
| Pitch Diameter | 85.21 mm |
| Bushing Bore [Min] | 0.5 in |
| Caliper Diameter | 76.46 mm |
| Sprocket Style | B |
| Inch/Metric | Metric |
| No. of Teeth | 21 |
| Outside Dia. | 3.645 in |
| Bushing Bore [Max] | 38.1 mm |
| No. of Strands Across | 2 |
| Pitch Dia. | 3.355 in |
| Bushing Type | Taper Lock |
| Width Across Teeth Rows | 0.819 in |
| Hub Dia. | 71.2 mm |
| Hub Projection | 4.45 mm |
| Bore Size [Max] | 1.625 in |
| Chain No. | 08B-2 |
| Material External Use | Steel |
| Hub Length | 4.45 mm |
| Outside Dia. [Min] | 92.58 mm |
| Bushing Bore Size [Min] | 0.5 in |
| Bushing Bore Size [Max] | 1.625 in |
| Bushing Series | 1610 |
| Bore Size [Min] | 0.5 in |
| Chain Sprocket Pitch | 0.5 in |
| Width Across Teeth | 7.06 mm |
| Chain Pitch | 0.500 in |
| Hardened Teeth | Without Hardened Teeth |
| No. of Teeth Rows Strands | 2 |
| Hub O.D. | 2.803 in |
| Bore Type | Bushed |
| Chain Sprocket Number | 08B |
| Overall Length Less Threads | N/A |
| Single Strand Tooth Thickness | 0.278 in |
| Root Diameter | 76.7 mm |
| O.D. | 3.645 in |
| Weight | 1.01 LB |
| EAN or UPC | 697950409221 |
