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- 40 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 303/304 stainless steel
- Precise machining and processes ensure consistent finish and high quality
- Bores are concentric to pitch line, minimizing run out
| Caliper Diameter | 3.033 in |
| Outside Dia. [Min] | 3.618 in |
| Material | Stainless Steel |
| Outside Dia. | 3.618 in |
| Hub Length Thru | 0.716 in |
| Bore Range [Max] | 1.875 in |
| Series | B |
| Martin No. | 40B21 |
| Hardened Teeth | Without Hardened Teeth |
| Hub Projection | 53/64 in |
| Chain No. | 40 |
| Length Through Bore | 1 in |
| Bore Range [Min] | 0.625 in |
| Chain Pitch | 0.5 in |
| Single Strand Tooth Thickness | 0.284 in |
| Width Across Teeth | 0.284 in |
| No. of Teeth | 21 |
| Pitch Diameter | 3.355 in |
| Inch/Metric | Inch |
| Bore Type | Reborable |
| Sprocket Style | B |
| Family Name | No. 40 - 1/2 in Pitch - Single - Type B & C |
| Bore Style | Minimum Bore |
| No. of Strands Across | 1 |
| Hub Dia. | 2 3/4 in |
| Weight | 1.78 LB |
| EAN or UPC | 697950065434 |
