Revolutionary concepts

Embodying more than 75 years of experience within the industrial and marine industries, Dellner Brakes AB is a leading Swedish manufacturer that develops, produces and maintains braking solutions across several technically challenging applications. Master of Science Jan Dellner first established the company in 1941 and, the business is now part of the wider Dellner Group of companies. The Dellner Group now has more than 700 employees serving production and office facilities across the world. Dellner Brakes was previously profiled in Shipping & Marine during May 2016, when CEO, Marcus Åberg discussed the company’s unique industry knowledge and the premium that the business places on adapting to industry demand and maintaining close customer relationships: “We are a small organisation in a big group with a lot of engineering knowledge; because we are small and have this expertise we can easily adjust to market demand and find new opportunities. We also use these capabilities to develop strong customer relationships that involve working with customers instead of for them. Customer satisfaction is very important to us.”

As a world leader in marine applications, the firm has developed an enviable reputation in the manufacture of braking solutions that are employed within both the marine and industrial ABsectors. Dellner Brakes is proud to provide cost-effective systems and components in a range of standard sizes that can all be customised to ensure complete customer satisfaction for the owners and operators of a comprehensive range of vessel types. Around half the company’s revenue is currently drawn from business generated within the marine industry, where it has provided brakes for the owners of large military ships, oil tankers, freight ships, ferries, luxury yachts and luxury liners.

Dellner Brakes has a strong focus on innovation and one of the company’s key developments is the technologically advanced ‘stop, turn and lock’ (STL) braking system, that’s installed around a vessel’s propulsion shaft. STL enables marine vessels to change direction quickly and efficiently and provides maximum control and manoeuvrability. The systems are precision designed to lower fuel consumption, reduce load on the propulsion systems and allow for easy, safe maintenance of the propeller blades and shaft.

“The first STL system we made wasn’t actually for the marine industry, however, we took the knowledge from that specific project and adapted it for the maritime sector,” Marcus comments. “This knowledge has been developed over the years and the latest generation of the STL is lighter, tighter, stronger and more usable than other systems on the market.”

In October 2016, Dellner Brakes announced the launch of the world’s first electrical STL (eSTL) system, which is already making waves with customers. The patent pending Dellner eSTL system is compact and requires no additional piping, making it quick, easy and cost effective to install – especially where space is at a premium. The system is simple to use, hardwearing and easy to maintain and is perfectly designed for applications where a clean environment is paramount, in areas such as green shipping zones for example.

The system is available in a variety of standard sizes but can also be customised for different applications, while its unique modular ‘stopping, turning and locking’ system allows clients to choose one, two or all three of these functions to create a fully bespoke solution for their individual needs.

“Our new electrical STL system is the latest in a long line of innovative, technically advanced and precision made braking systems that fully complements Dellner’s world beating hydraulic solutions,” Marcus reveals. “Developed in response to an increasing global focus on environmental issues and demand for smaller, flexible braking solutions, this groundbreaking electrical system is a world first, offering terrific power in a compact configuration for customers in offshore and onshore industries alike. We have held initial discussions with our customers about this new electrical system and we are delighted with the response so far. Our customers tell us that they value the flexibility of Dellner’s STL system, which allows them to pick and choose from each of the system’s three components to suit their specific needs and that eSTL will give them even more choice for small and mid-range applications.”

The Dellner eSTL system is fully automated but it can also be operated from an optional remote hand-held control, which gives operators the freedom to inspect the complete system during maintenance and test it. In terms of operation, the system is simple to run with each of its components providing an integral function comprising of:

  • Stop: A disc brake quickly stops the shaft in any position
  • Turn: After the brake has stopped the disc a separate mechanism turns the disc and connected shaft at a variable speed to an exact ‘indexed’ position
  • Lock: Once in position, the locking mechanism pushes a specially designed tapered pawl into a machined slot on the brake disc. This locks and holds the shaft securely in place, even in ship failure modes

The electric brake also has a continuous turning function that allows the shaft to be moved to any position precisely without the need for indexing and can run for long periods, making maintenance, checking and testing significantly easier. Depending on the size of the system it is able to provide stopping torque of up to 900 kNm, turning torque up to 600 kNm and locking torque of as much as 1650 kNm. Even Dellner’s small and mid-range eSTL systems can deliver stopping torque of up to 300 kNm, turning toque of 150 kNm and locking torque reaching up to 700 kNm.

Dellner Brakes is fully certified according to ISO 9001:2008 and maintains strict operating practices, cutting-edge design and robust assembly and testing procedures that ensure that it delivers reliable systems and components of the highest quality. Dellner works in close collaboration with its clients to keep them returning to the business time after time and works alongside expert contractors to deliver a rapid response to clients all over the world. During the coming 12 months, Dellner will continue to roll out its innovative new eSTL system while also expanding its product range and presence throughout the market. “Dellner Brakes is set for continued expansion during 2017, with several new sales people being recruited to help us to capitalise on the opportunities that we know are out there for our systems and components,” Marcus concludes. “We also have some exciting new products to be released soon that we are confident will revolutionise the braking industry – so watch this space!”

Dellner Brakes AB
• Brake solutions specialist for industrial and marine applications
• Global customer base
• Recently launched new electrical ‘stopping, turning and locking’ (eSTL) system