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Mountable shaft collars with face holes are designed to mate directly with components such as sprockets, pulleys, and metallic plates. Ruland manufactures them with drilled holes for mounting flexibility or threaded holes for the most secure connection between the collar and mated component. They are offered in steel, aluminum, and 303 stainless steel in bore sizes ranging from 3/8” to 2” and 10mm to 50mm.
Clamp style universal joints improve over set screw style because they do not mar the shaft, offer infinite adjustability, and can be used on all shaft types. Ruland is the only North American supplier of clamp style universal joints and manufactures the clamp feature, bores, and keyways in our advanced manufacturing facility in Marlborough, MA USA. They are available in sizes from 1/4" to 1 1/4” in steel for high strength and stainless steel for corrosion resistance.
Rigid couplings are manufactured from a single piece of material with no flexing elements for the greatest torsional stiffness and torque of any Ruland coupling. This makes them ideal for applications that require high accuracy and repeatability. These performance characteristics make rigid couplings well suited for large format, 3-D, and other types of printers in which no shaft misalignment is present. Most printing system designers prefer to use clamp type as opposed to set screw rigid couplings because they have increased holding power, will not mar the shaft, and have standard aluminum options for lightweight and low inertia. Ruland manufactures rigid couplings with precision honed bores on straight bore couplings to ensure collinearity for a precise fit and increased torque transmission capability. Collinear bores prevent the coupling from introducing misalignment into systems where it would not otherwise be present allowing for reduced wear on joined components and increased system efficiency. Clamp type couplings have proprietary Nypatch® anti-vibration coating on hardware to prevent screws from coming loose during operation, allow for repeated screw insertions, and provides the necessary dissimilar material in stainless steel to prevent galling. Rigid couplings are manufactured by Ruland in set screw and one- and two-piece clamping styles in 1215 lead-free steel with a black oxide finish for high torque, lightweight 2024 aluminum for low inertia, and 303 stainless steel for corrosion resistance. Bores are available in sizes from 1/8” to 2” and 3mm to 50mm. Ruland manufactures rigid couplings in our Marlborough, MA factory under strict controls using proprietary processes.
