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Large jaw couplings are now being offered for bore sizes up to 1-3/4” or 45 mm and torque capacities of 2,655 in-lbs (300 Nm). These new large jaw couplings are designed for use in precision systems with high deceleration and acceleration curves, such as those found in semiconductor, solar, conveyor, and warehouse automation applications.
Pre-assembled modular mounting systems are designed for adjustability across many mounting applications. Conveyor mounting systems emphasize strict parallel installation using a flange-bolt base and a conveyor rail guide. Sensor mounting systems offer flexibility in a mounting application with adjustable or 90-degree connectors, two-way bases, and various mounting brackets. Both systems include stainless steel rods (with or without scale) from 100mm to 300mm in length, zinc clamping levers, and connectors that allow adjustment of the rods’ position.
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.
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.
