Martin 50JA15 QD Bushed Type B Single Pitch Roller Chain Sprocket, 3.315 in OD, #50 Chain, 15 Teeth, 5/8 in Pitch, Steel
QD (quick detachable)is a sprocket where a tapered bushing is bolted into the taper bore that is machined in the sprocket. When installed this bushing is compressed onto the shaft providing a tight grip.
Martin Single Pitch Roller Chain Sprocket, QD Bushed Type B, 3.315 in Outside Dia, #50 Chain, 15 Teeth, 5/8 in Pitch, 3.006 in, 2-1/8 in Hub Dia, 5/8 in Length Through Bore, Type JA QD® Bushing, Steel
| Bushing Type | : | Type JA QD® |
| Chain Size | : | #50 |
| Hub Diameter | : | 2-1/8 in |
| Length Through Bore | : | 5/8 in |
| Material | : | Steel |
| Number of Teeth | : | 15 |
| Outside Diameter | : | 3.315 in |
| Pitch Diameter | : | 3.006 in |
| Pitch | : | 5/8 in |
| Type | : | QD Bushed Type B |