行业组件数据 · 2026

卡钳壳体

Caliper housing is the main structural component of a disc brake system that holds brake pads and pistons, converting hydraulic pressure into mechanical force to stop vehicles.

技术定义与适配语境
典型 卡钳壳体 会按材料、尺寸公差、适配关系和失效风险在 汽车制造 中评估。

The caliper housing is a precision-engineered component in disc brake systems that serves as the primary structural and functional unit. It mounts over the brake rotor and contains pistons, brake pads, and hydraulic fluid channels. When hydraulic pressure is applied from the master cylinder, pistons within the housing move outward, pressing brake pads against the rotor to create friction and decelerate the vehicle. The housing must withstand extreme mechanical stresses, thermal expansion from braking heat, and corrosive environmental conditions while maintaining dimensional stability and sealing integrity.

组件规格

定义
The caliper housing is a precision-engineered component in disc brake systems that serves as the primary structural and functional unit. It mounts over the brake rotor and contains pistons, brake pads, and hydraulic fluid channels. When hydraulic pressure is applied from the master cylinder, pistons within the housing move outward, pressing brake pads against the rotor to create friction and decelerate the vehicle. The housing must withstand extreme mechanical stresses, thermal expansion from braking heat, and corrosive environmental conditions while maintaining dimensional stability and sealing integrity.
工作原理
The caliper housing operates on hydraulic and mechanical principles. Hydraulic fluid pressure from the brake system actuates pistons inside the housing, which transfer force to brake pads. The housing converts this hydraulic energy into linear mechanical motion, clamping brake pads against the rotating rotor to generate friction and kinetic energy conversion into heat, thereby stopping the vehicle.
材料
Typically made from cast iron (gray or ductile)aluminum alloys (A356-T6 for lightweight applications)or occasionally forged steel. Materials must have high tensile strength (200-350 MPa)good thermal conductivitycorrosion resistanceand dimensional stability under thermal cycling. Aluminum housings often include silicon content (6.5-7.5%) for improved casting properties and wear resistance.
Weight
1.5-4.5 kg
Bore Diameter
30-60 mm
Mounting Type
Fixed or Floating
Surface Finish
Ra 1.6-3.2 μm
Pressure Rating
Up to 200 bar
Casting Tolerance
±0.5 mm
Piston Configuration
Single, Dual, or Multi-piston
Operating Temperature
-40°C to 300°C
标准
ISO 15484DIN 74252SAE J431ISO 26262

行业分类与别名

卡钳壳体 的常用贸易名称、技术标识和检索关键词。

上级产品

该组件会出现在以下整机或工业产品中。

FMEA · 风险与缓解

诱因 → 失效模式 → 工程缓解

Thermal cycling during braking->Housing cracks develop, leading to hydraulic fluid leakage->Use materials with proper thermal expansion coefficients, implement stress-relief heat treatments, and design with adequate wall thickness and reinforcement ribs
Corrosive road salt and moisture exposure->Piston bore corrosion causes sticking pistons and uneven braking->Apply corrosion-resistant coatings (e.g., powder coating, anodizing for aluminum), use stainless steel pistons, and ensure proper sealing
Improper installation or over-torquing->Mounting ear fractures or thread damage compromising structural integrity->Specify precise torque values (typically 70-120 Nm), use thread locking compounds, and provide clear installation guidelines

工业生态与工程逻辑

0
Cracking from thermal stress
1
Corrosion leading to piston seizure
2
Fluid leakage from seal failure
3
Mounting bolt fatigue failure
4
Incompatible material expansion

合规与检测

tolerance
Dimensional tolerances per ISO 2768-m, bore roundness within 0.01 mm, parallelism within 0.02 mm
test method
Pressure testing at 1.5x operating pressure, thermal cycling tests (-40°C to 300°C), salt spray corrosion testing per ASTM B117, fatigue testing with cyclic loading

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来自 CNFX 组件能力表的相关制造商资料。

制造商列表用于前期研究和供应商能力理解,不代表认证、排名或交易担保。

采购评估维度

不是客户评论,也不是实时热度。以下维度用于前期 RFQ 准备和供应商评估。

技术文档
4/5
制造能力
4/5
可检验性
5/5
供应商透明度
3/5

这些分值是采购评估维度示例,不代表真实客户评分、具体国家买家反馈或实时询盘。

相关组件

常见问题

What is the difference between fixed and floating caliper housings?

Fixed caliper housings have pistons on both sides of the rotor and remain stationary, providing even pressure distribution and better performance. Floating caliper housings have pistons on only one side and slide on pins or bushings, making them simpler and more cost-effective for most passenger vehicles.

How often should caliper housings be inspected?

Caliper housings should be inspected during every brake service (typically every 20,000-40,000 miles) for cracks, corrosion, piston sticking, and fluid leaks. Complete visual and functional inspections are recommended annually or whenever brake performance issues are noticed.

Can aluminum caliper housings replace cast iron ones?

Yes, aluminum housings are increasingly used for weight reduction and better heat dissipation, but they require different manufacturing processes and may have different thermal expansion characteristics. Direct replacement depends on specific vehicle design and compatibility with existing brake systems.

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CNFX Industrial Component Index · 汽车制造

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URN:CNFX:ME:UNIT:CALIPER_HOUSING