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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.
Jaw couplings are comprised of two aluminum hubs and a flexible elastomer element called the spider. Ruland jaw coupling hubs are machined with a curved jaw profile, resulting in a press fit with the spider allowing for zero-backlash operation. Jaw couplings are commonly used in cobots, vision, and other robotic applications where high acceleration/deceleration curves are present and vibration dampening is required. Ruland manufactures zero-backlash jaw couplings with a balanced design for reduced vibration at speeds up to 8,000 RPM. Designers can choose from three spider durometers based on their dampening, torque, and torsional stiffness requirements. The jaw coupling spider serves as the wear element, resulting in a fail safe design. In the event of spider failure, the aluminum hubs lock together and continue power transmission, allowing the application to be safely shut down for maintenance. Spiders can be replaced to restore the original performance characteristics of the coupling – this is significantly less expensive when compared to other coupling styles that require complete replacement at the end of their service life. Bores are available in sizes from 1/8” to 1-1/4” and 3mm to 32mm. The three piece design allows the user to mix and match clamp or set screw hubs with inch, metric, or keyless bores making it easier to tailor the coupling to specific system requirements.
