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Brake Pad Backing Plate Component – Motor Vehicle Manufacturing

Component Specifications

Definition

A rigid metallic component that serves as the foundation for brake pad assemblies in disc brake systems. It provides structural integrity, transfers braking forces from the friction material to the caliper, and ensures proper alignment and heat dissipation during braking operations.

Working Principle

The backing plate functions as a load-bearing substrate that anchors the friction material. During braking, hydraulic pressure activates the caliper, pressing the friction material against the rotor. The backing plate distributes the resulting shear forces evenly, prevents deformation under extreme pressure and temperature, and conducts heat away from the friction interface to prevent thermal degradation.

Materials

Cold-rolled steel (SAE 1008/1010), galvanized steel, or stainless steel (AISI 304/316) with thickness typically 2.0-3.5mm. May include anti-corrosion coatings (zinc plating, powder coating) and noise-damping shims or adhesive layers.

Technical Parameters

Hardness HRB 70-85
Thickness 2.0-3.5 mm
Hole Diameter Ø10-12 mm (mounting)
Surface Finish Ra 1.6-3.2 μm
Flatness Tolerance ≤0.2 mm
Temperature Resistance -40°C to +600°C

Standards

ISO 15484, DIN 74100, SAE J866

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Brake Pad Backing Plate.

Parent Products

This component is used in the following industrial products

Brake Caliper/Pads

Hydraulic clamping device and friction material that converts kinetic energy to thermal energy to slow or stop vehicle motion.

View Product Details

Engineering Analysis

Risks & Mitigation

Corrosion leading to structural failure
Thermal warping under extreme heat
Fatigue cracking from cyclic stress
Improper fit causing caliper damage

FMEA Triads

Trigger: Inadequate corrosion protection
Failure: Reduced thickness, rust jacking, detachment of friction material
Mitigation: Apply zinc plating or powder coating; use stainless steel in corrosive environments

Trigger: Excessive braking temperatures
Failure: Thermal deformation, loss of flatness, reduced braking efficiency
Mitigation: Design with cooling fins or slots; use high-temperature steel alloys

Trigger: Poor manufacturing tolerances
Failure: Vibration, noise, uneven pad wear, caliper binding
Mitigation: Implement strict dimensional QC; use precision stamping processes

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance

±0.1 mm on critical dimensions (thickness, hole placement)

Test Method

Salt spray testing per ASTM B117, thermal cycling per SAE J2928, shear strength testing per ISO 6312

Procurement Evaluation Criteria

Not customer reviews or live demand data. These dimensions support RFQ preparation and supplier evaluation.

Technical documentation

4/5

Manufacturing capability

4/5

Inspection readiness

5/5

Supplier transparency

3/5

These scores are example evaluation dimensions, not real customer ratings, country-specific buyer feedback, or live inquiry activity.

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Frequently Asked Questions

What happens if a backing plate corrodes?

Corrosion weakens structural integrity, causing uneven force distribution, vibration, noise (squealing), and potential detachment of friction material. Severe corrosion can lead to complete brake failure.

Can backing plates be reused with new friction material?

No, backing plates are integral to brake pad assemblies and should not be separated. Re-manufacturing requires specialized equipment and adhesives. Always replace as complete pad assemblies.

Why do some backing plates have slots or holes?

These features improve heat dissipation, reduce weight, prevent gas buildup between pad and rotor, and help clear debris/water for consistent braking performance.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

Data Basis

CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks.

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.

Brake Pad Backing Plate