EuroWire January 2023

Products

High-strength fasteners for energy-saving ship propellers

or three per cent of global GDP, and the environmental consequences are enormous. Stainless steel fasteners offer significant benefits to counter corrosion, from product and asset infrastructure maintenance to total lifecycle costs.” MMG propellers are used for various large container vessels, tankers, bulkers and cruise ships, and can be up to 12m in di ameter. The company uses Bumax for its Escap solution because it needs high tensile strength bolts for safely transmitting the torque in existing propeller applications. Using standard stainless steel bolts would require expensive machining of additional and/or larger holes in a dry dock to deal with the required torque. With Bumax high-strength bolts the additional holes are not needed, and MMG can install the Escap while ships are in the water using diver installation teams. properties of Bumax 88 and Bumax 109 bolts are essential, as the fin caps are permanently submerged in seawater. The fin caps also play an important role in covering and protecting the shafting parts that are typically made of carbon steel and are susceptible to corrosion. The corrosion-resistance Spring Steel is used by electrical con- tractors at the stud level of construction to hang, support or mount wire, cable, conduit, rods, strut and steel boxes. Southwire’s initial range of more than 300 items encompasses five major subcategories in hanging and support: cable/conduit, structural attachments, stud/drywall, datacom/low voltage and acoustical/ceiling. “We are thrilled to be a new and trusted partner of choice in this important product category that helps electrical professionals work faster, better and safer on the jobsite,” said Brandon Moss, Southwire’s president of tools, components and assembled solutions (TCAS). “While there is much more to come, with our comprehensive spring steel line we take another step forward in our goal to be a complete components solution for our distribution customers.”

Swedish specialist fastener manufacturer Bumax has supplied premium stainless steel fasteners for German propeller manufacturer Mecklenburger Metalguss (MMG) and its innovative energy-saving propeller cap, Escap. MMG chose Bumax 88 and Bumax 109 models in various dimensions for their high tensile strength and corrosion resistance properties, which make them suitable to fasten the MMG Escap – a propeller cap with fins that can reduce fuel consumption by up to 3 per cent by smoothing out the propeller swirl. The Escap can be mounted onto existing propellers, and the manufacturer claims that fuel savings typically provide a return on investment within three months. “Sustainability is essential for everything we do since our premium stainless steel products prolong the life of all devices and constructions they are used for, and thus reduce the need for wasteful repairs and replacements,” said Lars Holm, managing director, Bumax. “In this particular case, fuel savings also equate to reduced environmental impact. “Just looking at corrosion, the global cost of rust exceeds US$2.5 trillion annually,

Escap – MMG’s energy-saving propeller cap

The Escap is fastened by up to 24 bolts, depending on the cap size, and uses bolt dimensions up to M36. JörnKlüss, headofdesignandconstruction at MMG, commented, “A number of container vessels and bulk carriers are already in operation around the world with an Escap secured by Bumax bolts. The Bumax bolts have performed very well and avoided the need for ship owners to undergo costly dry dock re-machining. We are currently working together with Bumax to use larger dimensions of bolts to fit larger ships with Escaps.” Bumax AB www.bumax-fasteners.com Mecklenburger Metallguss GmbH https://mecklenburger-metallguss.com Southwire spring steel fasteners and supports are made of heat-treated, coated steel that is lightweight, flexible, strong and easy to install, with multiple tool-free options. The Southwire Geoseal™ anti corrosion coating is a high-performance, water-based, chrome-free zinc and aluminium flake technology. Southwire and its subsidiaries man- facture building wire and cable, utility products, metal-clad cable, portable and electronic cord products, OEM wire products and engineered products. In addition, Southwire supplies assembled products, contractor equipment, elec- trical components, hand tools and job site power and lighting solutions, and provides a variety of field and support services to customers around the world. Southwire Company, LLC www.southwire.com

New line of spring steel fasteners and supports in stock

Southwire has introduced spring steel fasteners and supports to its expanding portfolio of components solutions.

Southwire has added spring steel fasteners and supports to its range

EF 7/47

www.read-eurofasteners.com

January 2023

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