Dellner Brakes Wind Turbine Yaw Brakes, Rotor Brakes, Bearings and Locks

wind turbine brake systemsDellner Brakes produces a range of lightweight, noise-free systems for braking and gliding processes in wind turbines.

The company has developed a comprehensive range of brakes and sliding bearings with a focus on reducing noise in wind energy projects. Its products set standards for the industry and are used worldwide by leading wind power manufacturers.

Active yaw brake calipers for wind turbines

Yaw brakes hold rotating nacelles in place once rotors turn to face the wind’s direction.

Our hydraulic active brake calipers feature special epoxy resin pads and drain ports for added safety and to prevent oil from leaking onto the brake disc.

The robust, high-performance brakes can withstand temperatures ranging from -40oC to 60oC. We offer four active yaw brake models such as the Germanischer Lloyd (GL) certified JHS-32, which delivers a 542kN braking force.

Passive yaw sliding bearings for optimised wind turbine performance

Featuring a robust yet simple design, Dellner Brakes’ passive yaw sliding bearings optimise performance throughout a turbine’s lifecycle.

These passive bearings require little maintenance and are reliable, meaning less downtime and outages.

Additional brake discs are not needed as brake torque is applied continuously and the system slides on the yaw bearing. It operates at temperatures between -40oC to 70oC, and brake torque is dependent on surface pressure and friction, so variations can be built in during the design process.

The JHS-PC-1×80 weighs 16kg with a 175kN brake force. If more power is required, the 200kg JHS-PC-4×80 combines four bearings to deliver a combined braking force of 700kN.

Active rotor brakes for the renewables sector

Hydraulically applied brakes are used for slowing, stopping and holding turbine rotors at -40oC to 60oC. They can be used to carry out emergency stops and feature a small air gap between the brake pad and disc to ensure fast response times. For additional safety, brakes feature drain ports to prevent oil leakages.

Dellner Brakes offers two models of 200kN active rotor brakes, the JHS-16-LS and GL-certified JHS-22-LS.

The JHS-300 and JHS-3000 are particularly robust and designed to work in damp, dusty and corrosive environments. They feature sintered brake pads for high-speed torque braking, floating axles and a large brake pad area for lower brake disc temperatures and extended pad life.

These brakes are easy to install and maintain with very few moving parts, as well as easily removable pads and holders.

JHS-300 delivers a 55kN braking force, while the GL-certified JHS-3000 offers 130kN of power.

Hydraulically released passive rotor brakes

The JHS-PRC-317-AWA is a spring-applied, hydraulically released fail-safe brake for wind turbine rotors. It delivers a braking force of 27,000N and features an automatic wear adjustment (AWA) system that maintains a small air gap between the brake pad and disc.

This robust, high-performance brake is designed to work in adverse environments with temperatures as low as -40oC. It features sintered brake pads for high-speed torque braking, floating axles and a large brake pad.

Rotor locks for safe and efficient turbine maintenance

Hydraulic rotor locks keep turbine hubs still to enable safe maintenance. A bolt extends and engages the rotor lock disc. It is then monitored and a corresponding signal is transferred to the turbine control system.

We offer three different sizes of rotor lock such as the GL-certified JHS-R240, which delivers up to 250 bar brake pressure, with an activation time of 35 seconds.

Hydraulic units, service tools and brake pads

Hydraulic units deliver a constant pressure of up to 250 bar, with up to 300 bar available on request. They are able to withstand temperatures from -20oC to 40oC and have International Protection (IP) 54-class protection.

Dellner Brakes offers a range of service tools that make it easier for your technicians to install, remove or retrofit passive and active azimuth systems, along with service pads and replacement brake pads.

About Dellner Brakes

Dellner Brakes is a leading power transmission solutions manufacturer for wind applications. Our technologically advanced products, components and systems are deployed worldwide, on land and at sea.

They are carefully engineered at our innovation centre in Sweden, which is supported by global facilities in Germany, the US, and China.

GL-type certification demonstrates high-performance and safety in accordance with stringent international standards and systems.

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Press Release

Interview with Dellner Brakes’ CEO Marcus Aberg

We’re delighted to share this interview between Kenneth Carter, Editor of Wind Systems Magazine, and Dellner Brakes’ CEO Marcus Aberg.

White Papers

Wind Systems

By approaching customers with a full-service mentality, Dellner Brakes works to supply the industry with a range of lightweight, noise-free systems for breaking and gliding processes in wind turbines.

Dellner Brakes JHS GmbH

Marler Straße 129a




+49 2362 4009-0

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Press Release

3rd September 2020

We’re delighted to share this interview between Kenneth Carter, Editor of Wind Systems Magazine, and Dellner Brakes’ CEO Marcus Aberg.

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17th May 2019

The new Dellner Bubenzer Group is launching its combined product range to the wind energy market at the AWEA Windpower Expo in Houston, Texas, US, taking place from 20-23 May.

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16th May 2019

Sweden’s Dellner Brakes, Germany’s Pintsch Bubenzer GmbH, and Italy’s Rima Srl have come together to form the Dellner Bubenzer Group, securing a leading position as a customer-oriented, global supplier of braking products for the wind and renewable energy sector.

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18th October 2018

Sweden’s Dellner Brakes will be attending the China WindPower 2018 event for the first time this year, following the company’s recent acquisition of the JHS group of companies, including JHS Wind Power Technology (Beijing) Co Ltd.

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20th September 2018

JHS is attending WindEnergy Hamburg on 25-28 September for the first time under the Dellner Brakes brand, following the recent procurement of JHS Jungblut by Sweden’s Dellner Brakes.

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10th September 2018

Dellner Brakes has acquired JHS Jungblut to optimise the company’s presence in the wind energy market and worldwide.

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Regional Offices

Dellner Brakes JHS GmbH

Marler Straße 129a




+49 2362 4009-0
Ms Xianfen Wang - Sales Director China +86 6442 2182
Mr Vikash Jha - Director - India +91 120 413 8679
Liselotte Eriksson - Sales and Quality Engineer +46 23 78 30 50
Edgar Roca - Vice President +1 832 482 4830