Diver Magnet - 400
Le Diver Magnet – 400 est un aimant sous-marin double renforcé conçu pour les grands travaux offshore. Il réunit deux aimants en pot au néodyme de 78 mm (le noyau du Diver Magnet – 200, nuance N45) sous une même poignée, offrant une force de maintien nominale de 400 kg et une résistance au glissement élevée pour les travaux sur pipelines, risers et structures dans les forts courants. Chaque aimant est scellé dans de l'époxy et du HDPE pour une utilisation continue en eau salée. L'ensemble comprend un écrou à œil M10 en acier inoxydable 316 pour les outils et les longes, et une poignée en acier inoxydable pour un positionnement ferme et un effet de levier contrôlé lors du détachement des aimants en pleine force de maintien. Un outil de positionnement et de maintien pour plongeurs professionnels – pas un équipement de levage.
Force de maintien : 400 kg · Face magnétique Ø : 2 × 78 mm · Grade : N45 · Revêtement : Epoxy-HDPE · Profondeur : éprouvé en service jusqu'à 150 m · Pays d'origine : Afrique du Sud
The Diver Magnet - 400 is an industrial-strength neodymium pot magnet rated at 400 kg pull force — built for the most demanding subsea applications including a secure anchor point for divers, large-diameter pipeline work, and offshore construction tasks. Manufactured by Diving Magnets (Pty) Ltd in South Africa with Epoxy-HDPE coating for corrosion resistance and 316 stainless steel hardware, this diver magnet is trusted by commercial diving professionals worldwide.
À quoi sert le Diver Magnet - 400 ?
- Heavy-duty diver positioning on major subsea construction
- Large-diameter pipeline inspection and repair operations
- Offshore decommissioning and structural cutting support
- Magnetic anchor point and equipment staging on subsea structures
- Hull inspection and cleaning on large commercial vessels
Caractéristiques & avantages
- 400 kg rated pull force — maximum holding for the most demanding subsea tasks
- Magnet sealed in epoxy and HDPE for continuous saltwater use
- 316 stainless steel eye nut, handle and screws — engineered for extreme marine environments
- Built for offshore construction, decommissioning, and pipeline work
Sur quelles surfaces le Diver Magnet - 400 fonctionne-t-il ?
Fonctionne mieux sur
- Mild steel and carbon steel (best performance — flat, clean surfaces)
- Cast iron structures and components
- Structural steel beams, columns, and plate
- Steel pipelines and risers
- Ship hulls and marine vessel steel
Réduit les performances
- Rusted or corroded surfaces — rust and scale create an air gap that reduces pull force
- Painted or coated surfaces — coating thickness creates an air gap
- Curved surfaces — reduced contact area lowers effective pull
- Thin metal (under 5 mm) — insufficient material for full flux path
Ne fonctionnera pas sur
- Aluminium, brass, copper, and bronze (non-ferrous metals)
- Most austenitic stainless steels (304, 316) — little or no attraction, slightly magnetic only where cold-worked or welded
- Concrete, wood, plastic, fibreglass, and composites
- Titanium and non-magnetic alloys
Consignes de sécurité
- Always wear protective gloves when handling magnets rated above 100 kg pull force — pinch injuries are the most common hazard
- Keep magnets away from dive computers, compasses, and electronic instruments — strong magnetic fields can cause permanent damage
- Never allow two magnets to snap together uncontrolled — the collision force can shatter the magnet and cause flying debris
- Use a safety lanyard to secure the magnet to your harness — prevents loss in current or during detachment
- Attach at a 45° angle and rotate flat — never approach a steel surface head-on with a strong magnet
- Brief your dive team on magnet location — unexpected strong pull near steel structures can trap equipment or limbs
Entretien & maintenance
- Rinse thoroughly with fresh water after every saltwater use — salt crystals accelerate corrosion if left on the coating
- Dry completely before storage — moisture trapped against the magnet surface causes coating breakdown over time
- Inspect the Epoxy-HDPE coating regularly — any chips or cracks expose the neodymium core to corrosion
- Remove iron filings and metal particles after each use with a wire brush or cloth — accumulated debris reduces pull force
- Store in a cool, dry environment away from electronic equipment — temperatures above 80°C permanently reduce magnetic strength
- Apply a thin layer of corrosion inhibitor (light oil or silicone spray) for long-term storage
Maximum holding power for industrial subsea work
- Large-scale offshore construction and decommissioning operations
- Tasks requiring 400 kg pull force for the heaviest subsea tools and equipment
- Saturation diving operations where equipment staging is critical
- Companies that need maximum holding force from high-grade N42–N48 cores — grade for grade, an N48 core stores about 14% more magnetic energy than an N42 core of the same size
- Projects where magnet failure would create serious safety or operational risk
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