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Martin
12BTB40
Single Strand Sprocket; 12B-1 Chain Size; 40 Teeth; Requires 2012 Taper Lock Bushing
Item #100966608
- Single Strand Sprocket
- 12B-1 Chain Size
- 40 Teeth
- Requires Taper Lock 2012 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
| Outside Dia. | 10.022 in |
| Chain Sprocket Pitch | 0.75 in |
| Bushing Type | Taper Lock |
| Caliper Diameter | 230.74 mm |
| No. of Strands Across | 1 |
| No. of Teeth | 40 |
| Hardened Teeth | Without Hardened Teeth |
| Outside Dia. [Min] | 254.55 mm |
| Hub Projection | 21.31 mm |
| Material Internal Use | Carbon Steel |
| Hub O.D. | 3.562 in |
| Bushing Bore Size [Max] | 2 in |
| Bore Size [Max] | 2 in |
| Chain Sprocket Number | 12B |
| Type | B |
| Construction Internal | Welded |
| Length Through Bore | 1.25 in |
| Inch/Metric | Metric |
| Chain Pitch | 0.750 in |
| Material | Steel |
| Single Strand Tooth Thickness | 0.437 in |
| Overall Length | 31.75 mm |
| Overall Length Less Threads | N/A |
| Sprocket Style | B |
| Root Diameter | 230.74 mm |
| Bushing Bore [Max] | 47.625 mm |
| Bushing Series | 2012 |
| Hub Dia. | 90.47 mm |
| O.D. | 10.022 in |
| Bushing Bore Size [Min] | 0.5 in |
| Pitch Dia. | 9.559 in |
| Pitch Diameter | 242.8 mm |
| Material External Use | Steel |
| Width Across Teeth Rows | 0.411 in |
| Bore Size [Min] | 0.5 in |
| No. of Teeth Rows Strands | 1 |
| Chain No. | 12B-1 |
| Bore Type | Bushed |
| Width Across Teeth | 11.1 mm |
| Bushing Bore [Min] | 0.5 in |
| Hub Length | 21.31 mm |
| Weight | 8.47 LB |
| EAN or UPC | 697950410265 |
