Find a Service Center
Alternate Products
- 40 Chain Number
- 1 Strand
- 28 Teeth
- 4.738 in Outside Diameter
- 1.25 in Finished Bore
features
- Conforms to ANSI B29.1-1975 standards
| Hardened Teeth | Without Hardened Teeth |
| Chain No. | 40 |
| Hub Projection | 0.72 in |
| Chain Sprocket Pitch | 0.5 in |
| Single Strand Tooth Thickness | 0.284 in |
| O.D. | 4.738 in |
| Outside Dia. [Min] | 4.7380 in |
| Construction Internal | Solid |
| Chain Pitch | 0.500 in |
| Keyway Size | 1/4 x 1/8 in |
| Length Through Bore | 1 in |
| Hub O.D. | 3.25 in |
| Hub Dia. | 3 1/4 in |
| Finished Bore Size | 1.25 in |
| Keyway | w/Keyway & Set Screw |
| Finished Bore | 1.250 in - 1 1/4 in |
| Set Screw Location | (1) Over Keyway and (1) At 90° |
| Bore Type | Finished Bore |
| Hub Length Thru | 0.716 in |
| Chain Sprocket Number | 40 |
| Pitch Diameter [Min] | 4.466 in |
| Inch/Metric | Inch |
| No. of Screws | 2 |
| Width Across Teeth | 0.284 in |
| Martin No. | 40BS28 |
| Material External Use | Steel |
| Set Screw Size | 5/16-18 UNC |
| Sprocket Style | B |
| Caliper Diameter | 4.1537 in |
| Outside Dia. | 4.7380 in |
| Pitch Dia. | 4.466 in |
| No. of Teeth | 28 |
| No. of Teeth Rows Strands | 1 |
| Material | Steel |
| No. of Strands Across | 1 |
| Material Internal Use | Atomized Metals |
| Pitch Diameter | 4.466 in |
| Weight | 2.5 LB |
| EAN or UPC | 697950006048 |
