Rigid coupling Ruland

Rigid Couplings

Various Ruland Rigid Couplings

Ruland rigid couplings are available in one and two-piece designs, with and without keyways, in aluminum, carbon steel, and stainless steel. A large number of standard sizes are available in straight and step bore combinations to fit shafts ranging from 1/8" to 2" in the inch series and from 3mm to 50mm in the . Inch to metric conversion couplings are also available by special order. Shaft couplings are stamped with the Ruland name and the bore sizes for easy identification.

The one-piece rigid coupling wraps around the shaft, providing high torsional holding power without the shaft damage and fretting inherent when a set screw style coupling is used. The two-piece rigid coupling has the additional benefits of allowing for disassembly and maintenance without removal of other components. Two-piece couplings also feature opposing hardware for dynamic balancing.

Extra steps are taken in the manufacturing of rigid couplings to provide important performance benefits. As one of these steps, the bores of Ruland straight bore couplings are precision honed. Honing of the bores provides several benefits that enhance the overall performance of the coupling. Applications that require strict control of shaft alignment benefit greatly from honing, which assures both bores are collinear. Honing also corrects any residual distortions caused by stresses introduced during the manufacturing process, resulting in a round, precisely sized bore. Proper sizing and geometry assures a large percentage of shaft contact and greater torque transmission ability.

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