Martin 40JA17 QD Bushed Type B Single Pitch Roller Chain Sprocket, 2.975 in OD, #40 Chain, 17 Teeth, 1/2 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, 2.975 in Outside Dia, #40 Chain, 17 Teeth, 1/2 in Pitch, 2.721 in, 2-1/8 in Hub Dia, 1-1/16 in Length Through Bore, Type JA QD® Bushing, Steel
| Bushing Type | : | Type JA QD® |
| Chain Size | : | #40 |
| Hub Diameter | : | 2-1/8 in |
| Length Through Bore | : | 1-1/16 in |
| Material | : | Steel |
| Number of Teeth | : | 17 |
| Outside Diameter | : | 2.975 in |
| Pitch Diameter | : | 2.721 in |
| Pitch | : | 1/2 in |
| Type | : | QD Bushed Type B |