The collars are available in one and two piece clamp-style designs with bore sizes from 1/8" to 6" in the inch series and 3mm to 80mm in the metric series.
All Ruland shaft collars are single point faced to ensure perpendicularity and proper alignment. Ruland uses forged socket hardware in all its shaft collars, which allows for higher screw torque and increased holding power.
The clamp-style shaft collars featured do not mar the shaft like traditional set-screw types. Clamp-style collars also have higher holding power because they wrap around the shaft when tightened thus applying compressive stress nearly uniformly on the circumference of the shaft.
Two-piece clamp-style collars have an additional advantage since they can be installed on the shaft without removing other components.
All Ruland shaft collars and couplings are stamped with the Ruland name and bore size for easy identification. Ruland maintains a large inventory and most items are stocked and available for immediate delivery.