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High-performance couplings drive mining reliability

Critical components can make or break operational performance in mines, where downtime directly translates into lost revenue

Critical components can make or break operational performance in mines, where downtime directly translates into lost revenue

11th July 2025

     

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Across Africa’s mining sector, operations face growing pressure to deliver more output, uptime and efficiency without compromising safety or sustainability.

In this context, one area of innovation is quietly transforming the reliability of rotating equipment: high-performance (HP) disc couplings. Although often overlooked, couplings are critical for transmitting torque between shafts in pumps, compressors, conveyors, and induced and forced draft fans, among other equipment. These components can make or break operational performance in mines, where downtime directly translates into lost revenue.

Mechanical seals and support systems manufacturer John Crane has developed a range of HP disc couplings engineered specifically for demanding industries like mining. Its TSKL/TLKL Metastream couplings deliver high torsional stiffness, accommodate misalignment and perform reliably in harsh, high-load environments.

Conventional couplings often struggle under the high torque loads and vibration typical of mining environments, especially when required to compensate for shaft misalignment. This can lead to fatigue, accelerated wear and unexpected maintenance.

HP couplings address these problems by offering greater torsional stiffness, low backlash and excellent misalignment tolerance. They deliver consistent torque transmission in high-vibration, high-inertia systems like slurry pumps, mixers and other rotating equipment critical to mineral processing.

What sets advanced HP couplings apart is their ability to accommodate axial, radial and angular misalignment without lubrication or frequent adjustment.

Built for Harsh Conditions

Mining equipment must perform reliably in abrasive, high-temperature and corrosive environments, conditions that demand durable, low-maintenance coupling solutions. HP couplings are engineered to withstand these extremes. Built from corrosion-resistant, high-strength materials, they use all-metal flexible elements that retain performance across wide temperature ranges and resist fatigue over long lifespans.

This durability translates into less maintenance. With no lubrication required and no wearing parts, these couplings support predictive maintenance strategies and reduce total cost of ownership.

HP couplings help reduce drivetrain losses and improve overall energy efficiency by minimising misalignment and ensuring efficient torque transfer. This is particularly valuable for mining operations that rely on diesel power or have an unreliable energy supply. In addition to improving efficiency, reducing vibration and better alignment, these disc couplings help extend the service life of nearby components, such as bearings and seals.

When installing new equipment or modernising existing systems, HP couplings help build reliability into critical operations from the start. Their straightforward installation and flexible design reduce commissioning time and simplify integration into new or existing systems.

With more than 50 years of expertise in coupling technology, John Crane offers advanced products and engineering support for selection, customisation and field troubleshooting.

Edited by Creamer Media Reporter

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