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Caliper Body/Housing Component – Motor Vehicle Manufacturing

Component Specifications

Definition

The caliper body/housing is the primary structural component in a disc brake system that mounts over the brake rotor. It serves as a rigid frame containing hydraulic pistons, brake pads, and fluid passages. During braking, hydraulic pressure forces pistons against the inner brake pad, while the caliper body slides or flexes to apply equal force to the outer pad, creating clamping force on the rotor.

Working Principle

Converts hydraulic pressure from the master cylinder into mechanical clamping force through piston movement. The caliper body acts as a reaction frame: hydraulic pressure pushes pistons against the inner brake pad, while the caliper body either slides on guide pins (floating caliper) or flexes (fixed caliper) to apply equal force to the outer pad, sandwiching the rotor between pads.

Materials

Typically gray cast iron (GCI) or aluminum alloy (A356-T6). High-performance applications may use forged aluminum or ductile iron. Materials must withstand thermal cycling (up to 300°C), corrosion, and mechanical stresses.

Technical Parameters

Weight Range 1.5-4.5 kg
Bore Diameter 30-60 mm
Mounting Type Floating/Sliding or Fixed
Pressure Rating Up to 200 bar
Piston Configuration Single, Dual, or Multi-piston
Operating Temperature -40°C to 300°C

Standards

ISO 15484, DIN 74256, SAE J431

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Caliper Body/Housing.

Parent Products

This component is used in the following industrial products

Brake Caliper

A hydraulic or mechanical device that applies clamping force to brake pads against a rotor to slow or stop a vehicle.

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Engineering Analysis

Risks & Mitigation

Thermal cracking from repeated heating/cooling cycles
Corrosion in salt-exposed environments
Piston seizure due to contamination
Mounting bolt fatigue failure

FMEA Triads

Trigger: Inadequate material heat treatment
Failure: Thermal stress cracking in caliper body
Mitigation: Implement strict thermal cycling tests and use materials with proper heat treatment specifications

Trigger: Corrosion from road salt exposure
Failure: Reduced structural integrity and piston binding
Mitigation: Apply corrosion-resistant coatings and specify appropriate aluminum alloys or treated cast iron

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance

±0.1 mm for critical bore dimensions, ±0.05 mm for mounting surfaces

Test Method

Pressure testing to 1.5x operating pressure, thermal cycling tests, salt spray corrosion testing per ASTM B117

Buyer Feedback

★★★★☆ 4.7 / 5.0 (16 reviews)

"Standard OEM quality for Motor Vehicle Manufacturing applications. The Caliper Body/Housing arrived with full certification."

"Great transparency on the Caliper Body/Housing components. Essential for our Motor Vehicle Manufacturing supply chain."

"The Caliper Body/Housing we sourced perfectly fits our Motor Vehicle Manufacturing production line requirements."

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Frequently Asked Questions

What is the difference between floating and fixed caliper bodies?

Floating caliper bodies slide on guide pins to apply pressure, while fixed caliper bodies are rigidly mounted and use pistons on both sides of the rotor for more even pressure distribution and better performance.

Why are caliper bodies typically made from cast iron or aluminum?

Cast iron provides excellent durability and heat dissipation, while aluminum reduces weight and improves corrosion resistance, making it common in modern vehicles for better fuel efficiency.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

Caliper Body/Housing