{"id":6186,"date":"2020-10-15T13:36:58","date_gmt":"2020-10-15T11:36:58","guid":{"rendered":"https:\/\/blog.febi.com\/?p=6186"},"modified":"2020-10-15T15:49:51","modified_gmt":"2020-10-15T13:49:51","slug":"tips-for-low-noise-effective-braking","status":"publish","type":"post","link":"https:\/\/blog.febi.com\/en\/tips-for-low-noise-effective-braking\/","title":{"rendered":"Tips for Low-Noise, Effective Braking"},"content":{"rendered":"\n

Rattling, vibrations, squeaking: noises during braking can significantly impair the driving experience. But what exactly is behind these NVH phenomena (what NVH means is explained here<\/a>) and how can this be prevented?<\/p>\n\n\n\n

How Noises are Generated<\/h2>\n\n\n\n

Braking noises are caused by vibrations with\nhigh-pitched tones that you can hear. Imagine that you trace the edge of a thin\nglass of water with a wet finger. The glass resonates and a sound is produced.\nThe vibration is caused by the friction that is created when you trace the edge\nof the glass with your finger. This vibration in turn vibrates in the glass and\nproduces a sound.<\/p>\n\n\n\n

The same principle applies when friction is generated\nbetween the brake pads and discs. The vibrations are transmitted to the brake\ncalipers. As a result, the entire brake system resonates and generates\nunpleasant noises.<\/p>\n\n\n\n

What is the Cause?<\/h2>\n\n\n\n

There are several\nfactors that should be considered to prevent noise and vibration during\nbraking. These include the quality of the materials used, the shape of the\ncomponents, the driving environment, vehicle speed, and brake temperature.<\/p>\n\n\n\n

Noise is often generated when the brake pad and disc\ntouch each other due to vibration but do not make full contact. Noise can also\nbe caused by worn or defective parts that have lost their tension.<\/p>\n\n\n\n

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The braking system includes numerous products that can be the cause of noise.<\/figcaption><\/figure>\n\n\n\n

Minimize Vibrations and Noise During Braking<\/h2>\n\n\n\n

In the development of new febi brake <\/a>pads, a number of technologies are used to reduce these unpleasant vibrations and noises and to improve the comfort for drivers and passengers.<\/p>\n\n\n\n

To minimize NVH, all febi brake pads have the same\nadvantages and properties of the OE component or even exceed them, e.g. by\nchamfers and\/or elongated recesses (grooves). These change the natural\nfrequency with which the brake pad oscillates, making it quieter than a brake\npad without these features.<\/p>\n\n\n\n

Brake pads may also be supplied with retaining clips\nor springs to minimize the play between the pads and the caliper and thus\ndampen vibrations. There are pads with additional weights: These are added\nduring the development phase to reduce vibration and noise.<\/p>\n\n\n\n

Maintenance of the Brake System<\/h2>\n\n\n\n

When servicing and\nreplacing components of a braking system, there are several important parts\nthat should be checked to both ensure correct operation and minimize unwanted\nbrake noise. These include the condition of the brake calipers and mounts and\nother components to determine if they are worn, no longer functional, or\ncorroded.<\/p>\n\n\n\n

When fitting new\nbrake pads, make sure that any corrosion is removed from the contact points of\nthe brake pads and calipers and that they fit precisely to the brake system.\nGrease the contact points with febi ceramic paste to ensure free movement and\nefficient braking. Avoid the use of copper paste, as this can affect the ABS\nsignals and promote galvanic corrosion. It also prevents free movement of the\nbrake pad, which can lead to noise.<\/p>\n\n\n\n

If the brake discs are badly scratched or deformed,\nthey must also be replaced, as the rough surfaces cause noise. Check the\nlateral runout. Then compare the tolerances with the vehicle manufacturer’s\nspecifications before installing the new discs. It is important that the hub\nsurfaces are cleaned before replacing the brake discs, otherwise there may be\nbrake rubbing.<\/p>\n