Modern Quarrying Q3 2025

LOW MAINTENANCE SCREEN MOUNTS FOR EFFICIENCY AND SAFETY IN MINING EQUIPMENT OST-Africa’s advanced screen mount system offers the mining industry a maintenance free alternative to conventional coil spring mechanisms, ensuring improved performance and greater operational safety.

“T he OST screen

adapter plates, facilitating easy integration into existing installa tions, without the need for exten sive structural modification.” OST screen mounts are avail able in several configurations. The Standard Type (AR/CR) supports vibratory equipment and drive systems, eliminating harm ful resonant frequencies. The Compact Type (AD/CD) provides high load-bearing capability in constrained installations, ideal for two-mass systems. The Stainless Steel Type (S4) is suitable for operations requiring hygienic or wash-down conditions, while the Suspended Type (AS/HS) is rec ommended for overhead configu rations. l

torsional forces compress the rubber components, isolating vibratory motion and eliminating lateral displacement. This method overcomes the limitations of traditional coil springs, which are prone to frequency amplification, fatigue-related failure and safety risks during handling and replacement. “Advantages of OST screen mounts over conventional coil spring assemblies, include simpli fied installation and greater per sonnel safety. The rubber-damped design is resistant to corrosion, dust ingress and water exposure, maintaining stable performance in challenging site conditions. Retrofit compatibility is achieved using

mount design - which is based on the Neidhart Concept, originally pioneered

at the University of Pretoria’s Laboratory of Advanced Engineering - addresses long standing reliability and safety concerns in mining vibratory equipment,” explains Chantelle Scheepers, Marketing Manager, OST-Africa, part of Invicta Holdings Limited. “This highly efficient system features a mechanically advanced design comprising an outer and inner tube separated by four precision moulded rubber elements. When the inner tube rotates, controlled

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MODERN QUARRYING QUARTER 3 | 2025