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Groove Tool Yaw Noise Reduction v2

Altra Renewables

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Yaw Noise Reduction Groove Tool

Altra Renewable Energy has turned its expertise on yaw brake noise and developed a solution that can be applied to the majority of installations, an Anti-Glazing Groove.

To help independent service providers (ISPs) as well as original equipment manufacturers (OEMs), Altra Renewable Energy has completed an in-depth analysis of the issue and the outcome has been a patented innovation that delivers a long-lasting solution.

By cutting a specially-shaped groove into the brake disc it is possible to remove existing glazing and prevent it from occurring in the future. The groove does not increase brake pad wear significantly, but it does help to remove the build-up of powdered material.

What is glazing?

  • It is a by-product of braking
  • It is a powdered mixture of removed pad and disc material
  • Glazing performes best at slow speed and constant pressures
  • It happens to all brakes - not only on wind turbines


Article shedding light on the Anti-Glazing Groove Solution providing instant yaw noise reduction plus the test results of the cause analysis.
Please download here. 


Data sheet 
Please download here.

Patented solution 
This Anti-Glazing Groove solution is patented by Svendborg Brakes (EP13169205). 

Other noise reduction solutions

This is just one example of how to reduce yaw noise, we have several other innovative solutions including our noise reducing friction materials. Because of the various options available, we strongly recommend to contact us for a customized proposal. 

Please contact our inhouse expert engineers for more details. 

Renewable Energy Solutions


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