Compared with ordinary commercial vehicles (trucks, buses), the brake pads of engineering vehicles (such as excavators, loaders, bulldozers, cranes, etc.) work in harsher environments and bear greater loads. Therefore, their brake pads have the following unique characteristics:

1. Ultra-high wear resistance & long service life ‌
Harder materials ‌ : Engineering vehicles frequently apply heavy loads during braking. Brake pads are typically made of ‌ high-hardness metal bases (such as copper, iron, and steel fibers) or ceramic-metal composite materials ‌, which are highly wear-resistant and have a lifespan of up to ‌ 150,000 kilometers or more ‌ (about 100,000 kilometers for ordinary trucks).
Replaceable friction block design ‌ : Some large engineering vehicles adopt ‌ modular brake pads ‌. After wear, the friction blocks can be replaced separately, reducing maintenance costs.
2. Extreme heat resistance (anti-thermal fade) ‌
Higher working temperature ‌ : When engineering vehicles are heavily loaded downhill and brake frequently, the temperature of the brake pads can reach ‌800°C or above ‌. Therefore, ‌ high-temperature resistant formulas ‌ (such as semi-metallic, low-metallic or ceramic materials) need to be used.
Heat dissipation optimization ‌ : Some brake pads of engineering vehicles are equipped with ‌ heat dissipation holes, ventilation slots or forced air cooling/water cooling systems ‌ to prevent failure due to high temperatures.
3. Super impact resistance ‌
Thicker backplate ‌ : The brake pads of engineering vehicles usually adopt ‌ thickened steel backplates ‌ to prevent deformation or cracking caused by severe impacts (such as sudden braking during the operation of excavators and cranes).
Split design ‌ : Some heavy-duty engineering vehicles adopt ‌ split brake pads ‌ to enhance impact resistance.
4. Adapt to harsh working conditions ‌
Dust-proof and water-proof design ‌ : Engineering vehicles often operate in ‌ mines, construction sites, and muddy environments ‌. Brake pads need to have ‌ anti-rust, dust-proof, and mud-proof ‌ capabilities, and some adopt a ‌ sealed structure ‌.
Wet brake pads ‌ : Some engineering vehicles (such as mining trucks and bulldozers) use ‌ oil-cooled/water-cooled wet brake pads ‌, which dissipate heat through oil to prevent failure due to high temperatures.
5. High coefficient of friction & forced power ‌
The coefficient of friction is higher ‌ (0.45-0.6, about 0.4-0.5 for ordinary trucks), ensuring rapid braking under heavy loads.
Drum brakes are the main type ‌ : some engineering vehicles still use ‌ drum brakes ‌. The shape of the brake pads is different from that of the disc type and needs to be matched with a special model.
6. The noise is relatively high, but reliability takes priority ‌
Due to the high hardness of the material, the brake pads of engineering vehicles produce relatively large ‌ braking noise ‌ (especially when the vehicle is cold), but ‌ safety takes priority ‌, and quietness is usually not pursued.

The core features of engineering vehicle brake pads are: ‌ extremely high wear resistance, extreme heat resistance, impact resistance, and adaptability to harsh environments ‌, but they are noisy and expensive. When making a selection, the appropriate type should be matched based on the ‌ vehicle model, load capacity, and working environment ‌ (such as mines, construction sites, muddy roads).