What is an Anti-Rattle Clip and How Does it Work?

The Importance of the Anti-Rattle Clip in Brake Systems

An anti-rattle clip, also known as a brake pad clip or brake hardware clip, is a small metal component that secures the brake pads within the caliper. Its primary function is to prevent the brake pads from vibrating or moving excessively within the caliper bracket, which can cause rattling noises and uneven brake pad wear. They’re typically made of stainless steel or other high-strength materials that can withstand the harsh conditions of the braking system, including high temperatures, corrosion, and mechanical wear.

They reduce brake noise

One of the most noticeable benefits of anti-rattle clips is their ability to reduce brake noise. Brake noise, often referred to as brake squeal, can be a significant annoyance for drivers and passengers. This noise is typically caused by the vibration of the brake pads when they come into contact with the rotor. The vibrations can be amplified if the brake pads are not securely held in place.

Anti-rattle clips address this issue by applying tension to the brake pads and holding them firmly against the caliper bracket. This tension helps to dampen vibrations, preventing the pads from moving excessively and thus reducing the potential for noise. By ensuring that the brake pads remain in the correct position, anti-rattle clips help maintain a quieter and more comfortable ride.

Plus, they ensure proper alignment and wear

Proper alignment of the brake pads is crucial for even wear and optimal braking performance. If brake pads are not aligned correctly, they can wear unevenly, leading to a range of issues, including reduced braking efficiency, increased noise, and the need for more frequent replacements.

Anti-rattle clips help ensure the brake pads are correctly positioned within the caliper. By holding the pads securely, these clips prevent them from shifting or tilting, which can lead to uneven contact with the rotor. This secure positioning is essential for distributing the braking force evenly across the pad surface, promoting uniform wear and extending the lifespan of the brake pads.

A typical anti-rattle clip

An anti-rattle clip, also called a brake abutment clip

The anti-rattle clip shown in the land of the brake caliper bracket

is used to prevent brake pad looseness and noise when mounted in a brake caliper or brake caliper bracket. The clip is usually made from a stainless steel material to prevent or reduce corrosion and provide a smooth

Apply brake grease to cleaned pad clip areas to reduce rust jacking. Then, install brake pad clips and new boots

surface for the brake pad to move against. They may also have spring tension arms to keep constant pressure against the brake pad backing plate.

What goes wrong with them?

Over time and use, anti-rattle clips lose their tension due to normal brake heat/cooling cycles and fail to exert proper tension against the brake pad, resulting in noise.

High heat degrades the spring tension and rust can cause the brake pad “ears” to bind

The clips can also lose their anti-corrosive properties and rust, causing the surface to rise, a phenomenon know as “rust jacking,” that can cause a brake pad to bind and wear unevenly.

When to replace them?

Theys should be replaced any time the brake pads are replaced. They should not be reused. High quality brake pads often come with new anti-rattle clips in the package.

©, 2019 Rick Muscoplat