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Feature


CLUTCHES, BRAKES & COUPLINGS


FEATURE


Disc anD bellows couplings foR high toRque applications


Designed for use in systems with high


torque across a range of applications, Ruland’s disc and


bellows couplings offer a variety of benefits


B


ellows and double disc couplings with bore sizes up to 45mm are available from Ruland for use in systems with torque


up to 158 Nm. High torque applications are commonly found in precision semiconductor, solar, conveyor, and factory automation applications, and often use these shaft sizes. The disc and bellows couplings accommodate


all forms of misalignment, are zero-backlash, and have a balanced design for reduced vibration at speeds up to 10,000 rpm.


features & benefits Ruland bellows couplings have the highest size-for-size torque and torsional stiffness capacity of the company’s flexible couplings. They are comprised of two anodised aluminium hubs mated to a stainless steel bellows, with the thin walls of the bellows allowing it to remain flexible under misalignment conditions while maintaining rigidity under torsional loads. Double disc couplings offer more misalignment


than bellows couplings at the expense of torque and stiffness. They are made from two anodised aluminium hubs, two sets of disc springs, and an anodised aluminium centre spacer. The double disc design allows the sets of disc springs to operate independently of each other for full misalignment capabilities. “The expanded line of bellows and disc


couplings with higher torque capacity allows designers to use a Ruland coupling with larger shafting,” the company explains.


Features at a glance:


• Best balance of torque, torsional stiffness, and misalignment in the industry, the company states


• Speeds up to 10,000 rpm due to a balanced design


• Bellows and disc couplings with bores up to 45 mm


• Ratings validated through thorough physical testing


• Carefully manufactured in Ruland’s advanced manufacturing facility


www.designsolutionsmag.co.uk


Double disc couplings offer more misalignment than bellows couplings at the expense of torque and stiffness


JUNE 2026 Design solutions 23 advanced manufacturing


Ruland manufactures its disc and bellows couplings from meticulously selected North American bar stock in 2024 aluminium for lightweight and low inertia. They are offered with clamp style hubs with or without keyways in bore sizes ranging from 3mm to 45mm. Bellows and disc couplings are carefully


made in Ruland’s ISO 9001:2015 certified advanced manufacturing facility under strict


quality controls using proprietary processes. They are RoHS3, REACH, and Conflict Minerals compliant.


Ruland Manufacturing co. www.ruland.com


acorn industrial services t: 0800 8766 441 www.acorn-ind.co.uk/ruland


Bellows couplings have the highest size-for-size torque and torsional stiffness capacity of Ruland flexible couplings


“The expanded line of bellows and disc couplings with higher torque capacity allows designers to use a Ruland coupling with larger shafting”


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