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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 for Semiconductor & Solar Applications
Ruland zero-backlash jaw couplings are a three piece assembly comprised of two lightweight aluminum hubs and an insert called the “spider.” Hubs are machined with a proprietary curved profile that press fits onto the spider for zero-backlash operation. The curved profile also concentrates the forces to the center of the spider’s limbs, improving the effectiveness of the material. Spiders are available in three durometers, allowing designers to balance torsional rigidity, torque capacity, bearing loads, and dampening for their applications. The dampening characteristics of Ruland jaw couplings reduce settling time and shock loads in start and stop machine vision systems used in the semiconductor and solar industries, making them ideal for precision applications with high acceleration/deceleration curves. Jaw couplings are considered failsafe because if the spider fails, hubs interlock resulting in direct power transmission allowing the machine to be shutdown safely. Replacing the spider will restore the original performance characteristics of the coupling, significantly reducing maintenance costs when compared to coupling styles that require complete replacement. Bore sizes are available 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.
