行业组件数据 · 2026

调整臂

A mechanical component in slack adjusters that automatically maintains proper brake shoe clearance in heavy-duty vehicles.

技术定义与适配语境
典型 调整臂 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 adjustment arm is a critical component within automatic slack adjusters used in commercial vehicle braking systems. It functions as a lever mechanism that detects excessive brake shoe-to-drum clearance and initiates the adjustment process through a ratcheting or gear mechanism. This component ensures consistent braking performance by compensating for brake lining wear during normal operation, maintaining optimal clearance without manual intervention.

组件规格

定义
The adjustment arm is a critical component within automatic slack adjusters used in commercial vehicle braking systems. It functions as a lever mechanism that detects excessive brake shoe-to-drum clearance and initiates the adjustment process through a ratcheting or gear mechanism. This component ensures consistent braking performance by compensating for brake lining wear during normal operation, maintaining optimal clearance without manual intervention.
工作原理
The adjustment arm operates on a mechanical sensing principle. When brake shoe clearance exceeds a predetermined threshold during brake application, the arm's movement activates a pawl or gear mechanism. This engagement rotates an adjustment screw or worm gear, which advances the brake shoe position to restore proper clearance. The arm typically resets during brake release, preparing for the next adjustment cycle.
材料
Typically forged or cast steel (SAE 10454140)sometimes with hardened wear surfaces. High-strength alloys for heavy-duty applications. Corrosion-resistant coatings (zinc platingphosphate treatment) are common.
Length
150-300 mm
Weight
0.8-2.5 kg
Lever Ratio
3:1 to 5:1
Torque Capacity
50-200 Nm
Operating Temperature
-40°C to 120°C
标准
ISO 1216DIN 75411SAE J2113

行业分类与别名

调整臂 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

Lack of lubrication->Seized adjustment mechanism->Regular maintenance with high-temperature grease
Corrosion from road salts->Reduced movement or complete seizure->Protective coatings and regular cleaning
Excessive vibration->Fatigue cracks in arm body->Proper mounting and vibration dampening

工业生态与工程逻辑

0
Over-adjustment causing brake drag
1
Under-adjustment reducing braking efficiency
2
Mechanical seizure in corrosive environments
3
Fatigue failure from vibration

合规与检测

tolerance
±0.5 mm on critical dimensions, angular tolerance ±1°
test method
Dynamometer testing per SAE J2113, cycle testing for 100,000 adjustments

制造该组件的工厂

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

How often should adjustment arms be inspected?

Inspect during regular brake maintenance intervals (typically every 25,000-50,000 km). Check for wear, corrosion, and proper movement.

Can adjustment arms fail?

Yes, common failures include seized mechanisms, worn pawls, or broken springs. Regular lubrication and inspection prevent most failures.

Are adjustment arms interchangeable between brands?

Not always. While functionally similar, mounting dimensions and connection points vary by manufacturer and slack adjuster model.

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CNFX Industrial Component Index · 汽车制造

数据基础

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初步技术归类
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请求制造能力信息: 调整臂

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