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Bendix BENDIX – Put your foot down with confidence

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Old 17-03-2019, 04:34 AM   #1
motorculture
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Default Question: We fitted new brake pads and they squeal. Why?

Brake noise after fitting new brake pads, Bendix investigates why.


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To learn more about the Bendix Brakes range of products visit: www.bendix.com.au
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Old 17-03-2019, 05:13 PM   #2
aussiblue
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Default Re: Question: We fitted new brake pads and they squeal. Why?

All brakes make noise (see https://www.researchgate.net/publica...E_SQUEAL_NOISE )it just usually not at a frequency you can hear. e.g. https://www.knowyourparts.com/techni...g-brake-noise/

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When the friction material makes contact with the rotor, the coupling causes the brake pad and rotor to oscillate and vibrate. In engineering terms, this is called “force coupled excitation,” which means that the components are locked as a combined system that will vibrate at the system’s natural frequency’s combined modes of vibration.

The amount of excitation and the frequency generated can be influenced by variations in brake torque (or changes in the coefficient of friction) across the rotor’s face. As the components heat up, the rotor may develop hot spots that could cause the rotor to have different regions of friction that produce different levels of brake torque. This friction coupling is where most brake noise is generated.
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Last edited by aussiblue; 17-03-2019 at 05:24 PM.
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Old 17-03-2019, 08:15 PM   #3
Honest Gaza
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Default Re: Question: We fitted new brake pads and they squeal. Why?

Had the brakes replaced on my GT in the last couple of weeks ...they provide great grip and stopping power but they squeal terribly when applied with light pressure only.

A Google search indicated it was common with the type of pads (DS2500).
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Old 17-03-2019, 08:25 PM   #4
aussiblue
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Default Re: Question: We fitted new brake pads and they squeal. Why?

Also see my post here: https://fordforums.com.au/showthread...t=brake+squeal
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Old 18-05-2019, 08:33 PM   #5
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Default Re: Question: We fitted new brake pads and they squeal. Why?

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Originally Posted by Honest Gaza View Post
Had the brakes replaced on my GT in the last couple of weeks ...they provide great grip and stopping power but they squeal terribly when applied with light pressure only.

A Google search indicated it was common with the type of pads (DS2500).
After a couple of months of constant squealing I couldn't put up with it any more....embarrassing.

Fortunately, the mechanic I use offered to replace the pads with a softer pad and this was done this week. Silence is golden
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