MARTIN SPROCKET & GEAR 28A57
MARTIN SPROCKET & GEAR
MARTIN SPROCKET & GEAR 28A57
28A57 PART NUMBER
Stock Bore Sprocket - Metric - A Style - 28B / 1-3/4 in, A Hub, 57 Teeth, 40 mm Stock Bore, Steel Material
QTY QUOTEMARTIN SPROCKET & GEAR - MARTIN SPROCKET & GEAR 28A57
Metric A Plates are flat sprockets with no hub extension on either side.
They can be altered for your application with bolt holes, custom bores, hardened teeth or special hubs welded to them.
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
SPECIFICATIONS
| Chain Number & Pitch | 28B / 1-3/4 in |
|---|---|
| Pitch Diameter | 806.9 mm |
| Chain / Sprocket Type | Metric Roller Chain |
| Maximum Bore Diameter | 766 mm |
| Hub Style | A |
| Tooth Width | 29 mm |
| Number Of Teeth | 57 |
| Tooth Thickness | 29 mm |
| Bore Type | Reboreable |
| Chain Roller Diameter | 27.94 mm |
| Bore Diameter | 40 mm |
| Chain Roller Width | 30.99 mm |
| Number Of Strands Across | 1 |
| Storage Dimension Height | 1.16 mm |
| Material | Steel |
| Storage Dimension Length | 32.85 mm |
| Storage Dimension Width | 32.85 mm |
| Bore Range | 40 to 760.4 mm |
| Surface Treatment | Protective Coating |
| Length Through Bore | 29 mm |
| Manufacturer Upc Number | 697950407074 |
| Hardened Teeth | Non-Hardened Teeth |
| Outside Diameter | 834.5 mm |
| Weight | 240.441 lbs |
| Caliper Diameter | 778.6 mm |
