Editorial Technical Reference

Brake Lining

This page explains how Brake Lining is classified within Motor Vehicle Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.

Technical Definition & Core Assembly

Brake lining is a friction material mounted on brake shoes or pads that converts kinetic energy into heat to slow or stop a vehicle.

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Product Specifications

Technical details and manufacturing context for Brake Lining

Definition

Brake linings are used in drum brakes and disc brakes for passenger cars, commercial vehicles, and industrial machinery. They are specified by friction coefficient, thermal stability, wear rate, and mechanical strength. Grades vary by application: organic (resin-bonded), semi-metallic, low-metallic, and ceramic, each offering different performance in terms of noise, dust, and high-temperature behavior. Linings are typically riveted or bonded to the brake shoe or backing plate.

Working Principle

When the brake is applied, the lining is pressed against the rotating drum or disc, creating friction. This friction converts the vehicle's kinetic energy into thermal energy, which is dissipated through the brake assembly. The lining's material composition determines its friction level, wear resistance, and ability to maintain performance at high temperatures.

Common Materials

Phenolic resin, Aramid fiber, Glass fiber, Steel fiber, Copper powder, Graphite, Ceramic fiber, Rubber

Technical Parameters

Parameter	Typical range	Notes & selection driver
Friction Coefficient (μ)	0.35–0.45 dimensionless	Dynamic friction coefficient at 100°C, typical for passenger carGB 5763
Friction Coefficient (μ) at 300°C	0.25–0.35 dimensionless	Hot friction, must not drop below 0.25 for safetyGB 5763
Wear Rate	0.1–0.5 10^-7 cm³/N·m	Volume wear rate at 100°C, lower is betterGB 5763
Shear Strength	≥3.0 MPa	Minimum shear strength of lining-to-shoe bondGB 5763
Hardness (Rockwell R)	80–110 HRR	Indentation hardness, affects noise and wearGB 5763
Density	1.8–2.2 g/cm³	Varies with material composition
Max Operating Temperature	350–450 °C	Continuous service temperature limit
Thickness	6–20 mm	Typical for drum brake linings
Width	50–200 mm	Depends on vehicle application
Arc Length	200–500 mm	For curved linings, matches drum radius
Tensile Strength	≥10 MPa	Minimum tensile strength of lining materialGB 5763
Compressibility	≤2 %	Maximum deformation under pressure at room temperatureISO 7881
Thermal Expansion	≤0.1 %	Dimensional change at 200°C, affects clearance
pH Value	7–9 pH	Water extract pH, indicates corrosion potential

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Brake Lining.

Published Manufacturer Relationships

Source-reviewed profile relationships currently associated with Brake Lining

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Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification

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