Black Ace Dual Pitch Roller Chain Sprockets are produced with the best integrity. You will realize worth, as these sprockets are flame-cut and machined with the highest precision available on the market.
ANSI Standard Torch Profiles
A – B – C Hub Types
A SORT (no hub) typically used in weld-on applications.
B Type (hub using one side) used in applications where clearance width is narrow. Less expensive than C Type.
C Type (hub on both sides) found in applications where B Type isn’t wide enough to withstand torques made by drive.
Split Style Construction – Once you utilize a Split Sprocket, you may never want to employ a setscrew mount style again. Removal or installation is a breeze. Can be used in virtually all applications. Another advantage to 
Dark Ace’s split sprockets is usually that the shaft/keyway security is much tighter than a typical setscrew mount.
Hardening Offered – Flame hardening of sprockets can be available as an option.