Brake systems are one of the most integral important components in a mobility, it uses air, hydraulic or connecting rod linkage when applied to generate frictional contact on surfaces, bringing the vehicle to a halt.
The brake system is also very important as it is also a regenerative system which converts the heat due to friction into energy, this energy in most electric mobility can be converted to electrical energy to recharge the vehicle, this is also known as a dynamo system.
Let us delve into the two main forms of brakes.
- Brake pads
- Brake Linings
The Brake pads have several advantages some of which are over the brake linings, especially when compared in modern passenger cars these includes:
- Better braking performance– Brake pads generally provide stronger and more consistent stopping power, particularly at high speeds.
- Improved heat dissipation– Disc brakes (which use brake pads) dissipate heat more effectively, reducing the risk of brake fade during repeated or prolonged braking.
- Better performance in wet conditions– Water is shed more quickly from disc brakes, so brake pads maintain effectiveness better in rain.
- Easier inspection– The condition of brake pads is visible without removing many components, making routine checks simpler.
- Quicker replacement– Replacing brake pads is usually faster and less labor-intensive than replacing brake linings on drum brakes.
- More precise braking control– Brake pads provide more responsive and predictable braking, improving vehicle handling.
- Less prone to overheating– Disc brake systems are less likely to overheat during heavy use, such as driving downhill or towing.
- Better compatibility with modern safety systems– Brake pads work effectively with systems such as Anti-lock Braking System (ABS) and Electronic Stability Control (ESC).
- Design - A complete assembly made of friction material securely bonded or riveted to a flat steel backing plate.
- Mechanism - When you press the brake pedal, the brake caliper clamps the pads tightly against the spinning brake disc (rotor), converting kinetic energy into heat.
- Usage - Standard on the front wheels (and increasingly the rear wheels) of almost all modern passenger vehicles due to their fast heat dissipation and stopping precision
Brake linings also have it's advantages as they are situated inside the drum brakes and have some advantages:
- They generally last longer under light-duty use.
- They are less expensive to manufacture.
- They are effective as parking brakes.
- They are often found on the rear wheels of many economy cars and commercial vehicles.
- Design - The thick, curved layer of friction material itself. In drum brake systems, this lining is typically bonded or riveted to a curved metal component called a brake shoe.
- Mechanism - When the brake is applied, hydraulic pressure pushes the brake shoes outward, pressing the lining against the inside of the rotating metal brake drum.
- Use - Generally found on the rear wheels of older cars, heavy-duty trucks, and industrial machinery, as they are highly durable and handle prolonged friction well.
Now let's talk their Composition and Maintenance
Both components are made from similar high-temperature resistant friction materials, classified primarily into:
- Ceramic: Extremely quiet, produces very little brake dust, and extends the life of your rotors/drums.
- Semi-Metallic: Very durable, handles high heat/towing loads well, but can be noisy and may cause faster wear on the rotors.
- Organic: Smooth and quiet for daily, normal driving, but wears out faster and doesn't handle extreme high temperatures as well.
Because they serve the same critical purpose, both need regular monitoring to avoid costly repairs.
- If neglected, the friction material wears down until the metal backing (or rivets) scrape against the rotor or drum, creating a high-pitched squealing or metal-on-metal grinding noise.
- In disc brake setups, you typically replace the entire brake pad unit. In drum brakes or heavy-duty commercial vehicles, it is sometimes possible to replace just the lining itself.
