Introduction to Truck Brake Linings No Brass Mixture
Truck brake linings no brass mixtures are eco-friendly brake linings friction materials designed to eliminate brass content while maintaining high braking efficiency and durability. These brake linings mixes combine non-metallic fibers (e.g., aramid, ceramic) with advanced binding agents and friction modifiers, ensuring compliance with environmental regulations like RoHS. Below is a detailed overview of their composition, technical specifications, advantages, and storage protocols.
Technical Parameters
The table below summarizes key properties of a typical no brass brake linings formula:
| Parameter | Specification | Remarks |
|---|---|---|
| Friction Coefficient (μ) | 0.35–0.45 (Dry) | Stable performance across load conditions |
| Density | 2.4–2.8 g/cm³ | Optimized balance of weight and strength |
| Shear Strength | ≥20 MPa | Ensures adhesion under stress |
| Operating Temperature | -40°C to 600°C | Minimal thermal fade |
| Compressive Strength | ≥80 MPa | Resists deformation under pressure |
| Wear Rate | ≤0.4 cm³/MJ | Extended lifespan for heavy-duty use |
| Hardness | 55–70 Shore D | Compatible with cast iron drums |
Key Advantages
- Environmentally Compliant
The brake linings mixture excludes brass and asbestos, reducing environmental impact and aligning with global regulations like RoHS. - Reduced Drum Wear
Ceramic and aramid fibers in the brake linings friction materials minimize abrasion on brake drums, lowering maintenance costs. - Thermal Stability
Maintains consistent friction performance even at high temperatures (up to 600°C), preventing brake fade during prolonged braking. - Low Noise and Vibration
Engineered with noise-damping additives (e.g., rubber particles) to reduce squeal and vibration. - Cost-Effective Production
The simplified brake linings formula reduces raw material costs while ensuring compatibility with standard molding processes.
Storage and Packaging
- Moisture Resistance: Packaged in sealed, moisture-proof bags to prevent degradation of friction modifiers.
- Temperature Control: Store in dry environments below 35°C; avoid freezing temperatures to maintain material integrity.
- Stacking Limits: Maximum stacking height of 4 layers to prevent deformation.
- Shelf Life: 24 months in unopened, original packaging.
Application of Brake Linings Mixes
The brake linings mixes are molded under high-pressure conditions (10–25 MPa) and cured at controlled temperatures to ensure uniform density and bonding. Post-production testing includes thermal cycling (100+ cycles between -40°C and 600°C) and shear strength validation (≥20 MPa) to guarantee reliability .
For specialized applications, manufacturers adjust the brake linings formula to meet OEM requirements, such as enhanced cold-weather performance or reduced dust generation.
This innovative blend of eco-conscious materials and precision engineering ensures safe, durable, and regulatory-compliant braking solutions for commercial vehicles.