INDUSTRY COMPONENT

Brake Pads

Brake pads are friction materials that convert kinetic energy to thermal energy through friction against rotors to decelerate vehicles.

Component Specifications

Definition
Brake pads are critical safety components in disc brake systems, consisting of a steel backing plate bonded with friction material. They apply pressure against rotating brake rotors, creating friction that converts vehicle kinetic energy into heat, thereby slowing or stopping motion. Modern pads incorporate wear indicators, noise-reducing shims, and chamfers for optimal performance.
Working Principle
When hydraulic pressure from the master cylinder activates the brake caliper, the pads are pressed against both sides of the rotating brake rotor. The resulting friction generates heat, dissipating kinetic energy and reducing rotational speed through the coefficient of friction between pad material and rotor surface.
Materials
Composite friction materials typically containing: metallic fibers (steel, copper), ceramic compounds, organic resins (phenolic), graphite lubricants, aramid fibers, and filler materials. Backing plates are made from cold-rolled steel with anti-corrosion coatings.
Technical Parameters
ParameterTypical rangeNotes & selection driver
Thickness8-15 mm (new)
Wear Limit2-3 mm remaining
Shear Strength>10 MPa
Compressibility<5%
Friction Coefficient0.35-0.45 (μ)
Operating Temperature-40°C to 600°C

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

Standards
ISO 15484, DIN 74100, SAE J866, ECE R90

Parent Products

This component is used in the following industrial products

Engineering Analysis

Risks & Mitigation
  • Pad delamination from backing plate
  • Fade at high temperatures
  • Uneven wear leading to rotor damage
  • Noise and vibration issues
  • Reduced effectiveness when wet (water fade)
  • Pad material transfer to rotors causing judder
FMEA Triads
Trigger: Overheating due to aggressive braking
Failure: Friction material glazing and reduced stopping power
Mitigation: Use high-temperature rated pads, ensure proper cooling, and avoid continuous heavy braking
Trigger: Contamination from brake fluid or lubricants
Failure: Loss of friction coefficient and uneven braking
Mitigation: Proper handling during installation, clean work environment, and immediate replacement if contaminated
Trigger: Incorrect pad-bedding procedure
Failure: Uneven material transfer and vibration during braking
Mitigation: Follow manufacturer bedding procedures with progressive braking cycles

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance
±0.2 mm thickness variation, ±10% friction coefficient deviation from rated value
Test Method
Dynamometer testing per ISO 15484 for friction performance, wear rate, compressibility, shear strength, and noise characteristics

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation
Request current drawings, revision history, and a signed specification sheet.
Manufacturing capability
Verify equipment lists, process limits, capacity, and representative production evidence.
Inspection readiness
Confirm test methods, calibrated equipment, sampling plans, and traceable reports.
Supplier transparency
Check the legal entity, factory address, ownership, certifications, and direct contacts.

CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

Manufacturers of Brake Pads

Manufacturer profiles associated with Brake Pads.

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Related Components

Brake Disc (Rotor)
A rotating disc in disc brake systems that creates friction with brake pads to slow or stop vehicle motion.
Main Bearing Journals
Main bearing journals are precision-machined cylindrical surfaces on a crankshaft that rotate within main bearings to support rotational motion in internal combustion engines.
Surround
Structural component that encloses and protects suspension system elements while providing mounting points and structural integrity.
Brake Disc/Rotor
A rotating disc component in disc brake systems that converts kinetic energy into thermal energy through friction to slow or stop vehicle motion.

Frequently Asked Questions

How often should brake pads be replaced?

Typically every 40,000-70,000 miles depending on driving conditions, material type, and vehicle usage. Always follow manufacturer recommendations and inspect pads regularly.

What are the main types of brake pad materials?

Three primary types: 1) Organic/non-asbestos organic (NAO) - quiet with moderate wear; 2) Semi-metallic - durable with good heat dissipation; 3) Ceramic - low dust, stable performance, and longer lifespan.

What causes brake squealing?

Common causes include: vibration between pad and caliper, glazed pads/rotors, worn shims or anti-rattle clips, high-frequency vibration from pad material composition, or contamination on friction surfaces.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

Preliminary Technical Classification
This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

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Wrist Pin (Piston Pin)
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