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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.
Controlflex couplings are a multi-piece assembly made up of two aluminum hubs joined together by one or two center inserts called frogs. Controlflex is a good starting point for light duty applications such as those with stepper motors or as encoder coupling for a servo motor becausy they are electrically isolating, capable of speeds up to 25,000 RPM, and designed to accommodate all forms of misalignment. Controlflex couplings with a single frog have higher misalignment capabilities and fit in space constrained applications. The double insert style offers higher torque and torsional stiffness. The frogs are designed to remain rigid while flexing under misalignment conditions.
The multi-piece design offers a great amount of flexibility when specifying a controlflex coupling. Designers can use the same coupling outer diameter on each design and fit the rest of coupling based on the performance requirements of the system. Controlflex has a wide range of shaft size accommodation within a given outer diameter, typically a 3:1 ratio of large bore to small bore. This is critical in servo motors where an encoder is generally used to maintain position. Often there is a large step in shaft size between the desired encoder and the motor. Other coupling styles would require special designs to accommodate these differences, whereas controlflex can accommodate this step in shaft sizes with standard off the shelf hubs.
Controlflex couplings are manufactured by Schmidt Kupplung in Germany and stocked and bored to size by Ruland in our Marlborough, MA factory. They are available in bore sizes from 1/8” to 1-1/2” and 3mm to 40mm.