Saltwater, chemicals, and aggressive atmospheric conditions pose a constant risk of corrosion and wear for orange peel grabs and clamshell grabs. Corrosion directly impacts the performance of these machines, making it essential to apply effective prevention strategies and pay special attention to critical components to maximise equipment lifespan.
Impact of Corrosion and Prevention Strategies
Corrosive environments accelerate the degradation of metal components and hydraulic systems. Continuous exposure to salts, aggressive chemicals, or humidity can cause premature failures, leaks, and loss of precision in grabbing operations. Understanding corrosion mechanisms is key to implementing preventive maintenance routines that avoid unexpected downtime and high repair costs.
Types of Corrosion You Must Combat
Galvanic corrosion occurs when two different metals are in electrical contact in the presence of an electrolyte, accelerating the degradation of the more active metal. Pitting corrosion generates small localised cavities on metal surfaces, which are particularly dangerous for cylinders and shafts, as they compromise the structural integrity of the equipment. Stress corrosion appears when a material under load is exposed to an aggressive environment, causing cracks and unexpected failures in critical areas of the machinery.
The Hidden Costs of Ignoring Corrosion Prevention
Neglecting corrosion can result in significant indirect costs. Unplanned production stoppages disrupt industrial planning and cause operational delays. Emergency repairs involve high spare parts and labour expenses. Moreover, equipment lifespan is shortened, compromising long-term investments and reducing operational efficiency.
Key Measures to Protect Your Grabs in Harsh Environments
Keeping your equipment protected requires proactive protocols combining design, materials, and inspection routines. Cylinder sealing represents the first line of defence — using next-generation seals and retainers resistant to chemicals and extreme salinity minimises contaminant ingress into hydraulic cylinders. The proper selection of materials and sealing profiles is crucial to maintain pressure and prevent leaks.
Surface treatments are also essential to protect critical parts against corrosion. Epoxy coatings provide resistance in humid and moderately chemical environments, while galvanisation offers long-lasting protection for exposed metal structures. For areas with extreme wear and exposure, ceramic coatings are especially effective, combining resistance to abrasion and chemical attack.
Regular inspection of seals and gaskets helps detect leaks and wear before they cause major failures. Integrating these checks into the maintenance plan reduces the risk of unplanned downtime and extends equipment life, ensuring stable and safe performance.
Critical Components That Require Maximum Attention
Certain components of orange peel grabs and clamshell grabs are especially vulnerable and require priority inspection and maintenance. Jaws, for instance, are in direct contact with materials and corrosive agents. Using stainless steel and tungsten carbide coatings ensures wear resistance and prevents premature failure. Hydraulic cylinders are constantly at risk of pitting on rods and corrosion in chambers. Advanced filtration and proper sealing avoid ingress of contaminants, ensuring stable, long-lasting performance.
Rotating shafts need specific lubrication and corrosion-resistant materials to maintain smooth rotation and prevent cracks or wear that could compromise grab operation. Likewise, electrical wiring should be protected with chemical- and UV-resistant sheaths, while the frame requires anti-corrosion coatings to preserve its structural integrity in harsh environments.
Stemm: Experience and Technology at the Service of Your Productivity
At Stemm, we have decades of experience developing orange peel grabs and clamshell grabs designed for demanding environments. Our approach combines precision engineering, high-strength materials, and customised sealing and coating solutions adapted to extreme corrosion. Thanks to our expertise, we provide equipment that maintains operational efficiency, reduces maintenance costs, and maximises service life even under the most aggressive conditions. With Stemm, protecting your grabs becomes not a challenge, but a tangible competitive advantage for your industrial operation.
