PTCbelt 450 sprockets are assembled. 
The possibility of replacing the split teeth, without the uninstallation of the shaft, saves time and cost of  maintenance. 
The additional possibility of replacing the divisor as well gear body, when after many years this is required, without also uninstalling the shaft, it does the
Assembled PTCbelt Sprockets, a valuable tool in the departments 
maintenance of production facilities. 
They are produced from special materials, which increase vertically their lifespan.