Martin 12B48 Type B Single Strand Stock Bore Welded Roller Chain Sprocket, 25 to 75 mm Dia Bore, 303.018 mm OD, #12B-1 Chain, 48 Teeth, 19.05 mm Pitch, Steel
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.
Martin Roller Chain Sprocket, Type B Single Strand Stock Bore Welded, 25 to 75 mm Bore, 303.018 mm OD, #12B-1 Chain, 48 Teeth, 19.05 mm Pitch, 291.27 mm Pitch Diameter, 106.451 mm Diameter Hub, 40 mm Length Through Bore, Steel
| Bore Diameter | : | 25 to 75 mm |
| Outside Diameter | : | 303.018 mm |
| Chain Size | : | #12B-1 |
| Number of Teeth | : | 48 |
| Pitch | : | 19.05 mm |
| Material | : | Steel |
| Type | : | Type B Single Strand Stock Bore Welded |
| Pitch Diameter | : | 291.27 mm |
| Hub Diameter | : | 106.451 mm |
| Length Through Bore | : | 40 mm |
VIDEO LINK
https://www.youtube.com/watch?v=fSomOMNB_-Q