Introduction to Truck Brake Linings Low Metallic Mixture
Truck brake linings low metallic mixtures are specialized brake linings friction materials designed to balance performance, durability, and environmental compatibility. These brake linings mixes integrate reduced metallic content (e.g., steel, copper) with organic binders and reinforcing fibers, offering a quieter, eco-friendlier alternative to traditional high-metallic formulations. Below is a detailed analysis of their technical specifications, advantages, and storage protocols.
Technical Parameters
The table below summarizes key properties of low-metallic brake linings formula:
| Parameter | Specification | Remarks |
|---|---|---|
| Metallic Content | 20-40% (Steel, Copper fibers) | Reduces noise and dust |
| Density | 2.4-2.8 g/cm³ | Lightweight yet durable |
| Friction Coefficient (μ) | 0.30-0.40 (Dry) | Balanced for moderate-duty braking |
| Operating Temperature | -40°C to 500°C | Resists thermal degradation |
| Compressive Strength | ≥250 MPa | Suitable for standard hydraulic systems |
| Wear Rate | ≤0.7 cm³/MJ | Extended service life |
| Shore Hardness | 55-70 Shore D | Optimized for drum/pad compatibility |
Key Advantages
- Low Noise and Vibration
Reduced metallic content minimizes brake squeal and vibration, enhancing driver comfort . - Eco-Friendly Composition
Free from asbestos and heavy metals, aligning with global environmental regulations . - Balanced Heat Dissipation
Metallic fibers (e.g., steel) provide moderate thermal conductivity, preventing rapid fade in urban driving conditions. - Cost-Effectiveness
Lower production costs compared to ceramic or carbon-based brake linings friction materials . - Versatility
Compatible with both drum and disc brake systems, ideal for medium-duty trucks and trailers.
Storage and Packaging
- Moisture Protection: Packaged in sealed, moisture-resistant containers to prevent oxidation of metallic components .
- Temperature Limits: Store in environments between -20°C and 50°C to maintain material integrity.
- Stacking: Limit stacking to 4 layers to avoid deformation of the brake linings mixture.
- Shelf Life: 18 months in unopened, original packaging.
Application Notes
The brake linings formula is molded under 10-20 MPa pressure and cured at 150-200°C to ensure adhesion to the brake shoe plate. Post-production testing includes shear strength (≥3.5 MPa) and thermal cycling resistance . Manufacturers like Yantai AMR Auto Part Co., Ltd offer customized formulations to meet regional standards or specific OEM requirements .
This low-metallic blend combines practicality with sustainability, making it a preferred choice for fleets prioritizing cost-efficiency and reduced environmental impact.