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创建于06.05
Brake Calipers: How They Work and When to Replace Them
🚗 What Exactly Is a Brake Caliper?
A brake caliper plays a crucial role in your vehicle’s braking system. It’s the part that holds the brake pads and presses them against the brake disc (rotor) when you step on the brake pedal. That pressure is what creates the friction needed to slow down or stop your car.
In simple terms: no caliper, no braking.
🔧 How Does It Work?
When you press the brake pedal, brake fluid is pushed through the brake lines and into the caliper. Inside the caliper, this pressure activates one or more pistons, which then push the brake pads tightly against the rotor. That contact is what brings your car to a stop.
There are two main types of brake calipers:
- Floating calipers: move slightly as they apply pressure from one side.
- Fixed calipers: stay in place and apply pressure from both sides.
Each type is suited to different vehicle needs. Fixed calipers usually offer better performance but cost more, while floating calipers are more common and budget-friendly.
🧰 Common Problems to Watch For
Like any mechanical part, brake calipers can wear out over time. Here are a few common issues that might indicate trouble:
- Sticking pistons: The brake pad might not release properly, causing uneven wear or a dragging brake.
- Brake fluid leaks: Damaged seals inside the caliper can leak, reducing braking power.
- Corrosion or rust: Especially common in cold or wet climates, rust can cause parts to seize.
- Uneven braking: If one caliper works better than another, your car might pull to one side when braking.
🛠️ Simple Tips for Caliper Maintenance
You don’t need to replace calipers often, but it’s a good idea to check on them regularly—especially when changing brake pads.
Here’s how to keep them in good shape:
- Clean and lubricate the caliper slide pins.
- Look for signs of fluid leaks or damaged rubber boots.
- Make sure the piston moves smoothly and isn’t stuck.
- If the caliper is older and causing issues, consider a rebuild or replacement.
Regular maintenance keeps your braking system running safely and helps prevent bigger repair costs down the road.
🔁 When to Replace a Caliper
Most brake calipers can last up to 80,000 km or more, but driving conditions and maintenance habits can affect their lifespan.
It might be time to replace a caliper if:
- Your brake pads wear out unevenly.
- You notice brake fluid leaks near the wheel.
- The caliper piston is stuck or won’t retract.
- Braking feels weak, even after new pads and rotors are installed.
🔗 Final Thoughts
Brake calipers don’t always get the attention they deserve—but they should. Understanding how they work and spotting early warning signs can help you stay safer on the road and avoid expensive repairs.
At ANNAT, we’re more than just a supplier. We support our partners and customers with reliable products and practical knowledge. Whether you're a distributor, mechanic, or just curious about your vehicle, we’re here to help.
Learn more about how we support our customers: www.annatbrake.com
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