Dellner Brakes AB - Precision engineered marine braking, turning and locking systems

Dellner Brakes AB is one of the world's most innovative manufacturers of technologically advanced braking, turning and locking systems for the marine industry. Dellner's superior, cost effective systems and components come in a range of standard sizes and can also be custom built to meet specific needs.

Precision made in Sweden, Dellner's brakes can be found in some of the world's leading cruise liners including Cunard's sumptuous flagship the RMS Queen Mary 2 and Celebrity Cruises' four luxury Millennium Class liners.

STL (stopping, turning, locking) system solutions

Dellner's innovative STL braking systems are precision engineered to facilitate faster directional changes with maximum manoeuvrability.

The unique design also contributes to lower fuel consumption, reduces load on the propulsion systems and allows for easy, safe maintenance including hydrodynamic bearing conditioning.

Here's how STL works:

  • Stop: A disc brake system stops the shaft quickly in any position.
  • Turn: After the brake has stopped the disc, a separate mechanism turns the disc and connected shaft at a variable speed into position for locking.
  • Lock: Once in position, the locking mechanism (LM) 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 STL system is available with three fuel options - hydraulic, full electric and a hybrid version, which has a hydraulic brake and electrical turning function.

The systems are modular, so customers can choose one, two or all three of the stopping, locking and turning functions to meet their requirements.

The electrically powered continuous turning (cT) function, available with the electrical STL and as an option on the hydraulic STL, allows the shaft and propeller to be turned for long periods at variable speeds, forwards and backwards, making maintenance, checking and testing much easier.

Electrical STL - a world first

Dellner's fully automated electrical STL (eSTL) braking system is a world first and has a patent pending.

Developed in response to an increasing global focus on environmental issues and a demand for smaller, flexible braking solutions, this groundbreaking electrical system offers terrific power in a compact configuration.

The Dellner eSTL system needs no additional piping, making it quick, easy and cost effective to install - especially where space is at a premium. It's simple to use, hard wearing and easy to maintain, and it's perfect for applications where a clean environment is paramount or for use in green shipping zones.

The system is fully automated and can also be operated from an optional remote hand held control, giving operators the freedom to inspect the system during maintenance and testing.

eSTL offers stopping torque up to 900 kNm, turning torque up to 600 kNm and locking torque up to 1,650 kNm.

SKD disc brake systems

Dellner's SKD disc brake systems are precision engineered for powerful, reliable and safe braking of rotary motion and longer brake life. They are designed for use on propulsion propeller shafts or wherever service, stopping, holding or tensioning is needed.

These direct acting hydraulic or air pressure applied, spring released units have a braking force of 8 kN (SKD 35) to 516 kN (SKD 4x140), which is directly proportional to the pressure applied.

The two symmetrical brake halves each have two guide pins that transmit the tangential braking force from the brake lining to the housing and mounting support. This removes any radial force on the brake pistons, contributing to longer brake life. Brake pad wear is automatically compensated for with increased piston stroke.

SKD disc brakes are available in a range of standard sizes and can be customised to order, with optional mechanical switches to indicate on/off and brake wear.

Locking mechanisms (LM)

With a locking force of up to 1,000 kN, which is higher than a holding brake, Dellner's locking mechanisms provide a compact, cost effective solution for holding propeller shafts in place while also reducing brake wear. The LM can be operated manually, hydraulically or electrically.

Components

Dellner supplies a range of power packs, steel pillow blocks, brake discs and hubs, all in a range of standard sizes and customisable on request.

Why Dellner Brakes?

Dellner Brakes is a world leader in marine braking solutions. Their strong focus on innovation stretches back 50 years and their flexible, customer oriented approach allows them to continually adapt their products to meet customers' specific needs and changing market requirements.

Dellner Brakes AB is ISO 9001:2008 certified and their commitment to cutting edge design, robust assembly and precision testing means you can count on reliable products of the highest quality, every time.

Based in Sweden, Dellner Brakes is part of the 700-employee global Dellner Group, enabling them to utilise production, sales and service offices around the world.

To find out more about Dellner Brakes and their world beating braking products, visit their website at www.dellner-brakes.com or get in touch using the contact form below.

 

Products and Services

Contact Details

Dellner Brakes AB
Vikavägen 144
SE-791 95 Falun
Sweden
Contact: Roger Axelsson, Global Sales Manager
Tel: +46 (0)23-78 3054
Email: roger.axelsson@dellner-brakes.com
URL: www.dellner-brakes.com

Cutting-edge braking solutions, built by Dellner Brakes at its production facility in Falun, Sweden.
Cunard’s flagship the Queen Mary 2 is fitted with Dellner brakes.
Dellner’s unique STL (stopping, turning, locking) braking system, for maximum manoeuvrability and enhanced performance.
50 years of innovation – Dellner Brakes has launched the world’s first electrical stopping, turning, locking braking system (patent pending).
Powerful, reliable disc brake systems, precision engineered for longer brake life (item shown: SKD 4 x 140).
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