行业组件数据 · 2026

活塞杆

A precision-machined rod that transmits linear force in hydraulic and pneumatic actuators.

技术定义与适配语境
典型 活塞杆 会按材料、尺寸公差、适配关系和失效风险在 机械和设备制造 中评估。

The rod is a critical load-bearing component in hydraulic cylinders and pneumatic actuators, designed to convert fluid pressure into linear mechanical motion. It connects the piston to the external load, transmitting force while maintaining alignment and sealing integrity through the cylinder head. Precision-ground surfaces ensure smooth operation and prevent leakage.

组件规格

定义
The rod is a critical load-bearing component in hydraulic cylinders and pneumatic actuators, designed to convert fluid pressure into linear mechanical motion. It connects the piston to the external load, transmitting force while maintaining alignment and sealing integrity through the cylinder head. Precision-ground surfaces ensure smooth operation and prevent leakage.
工作原理
The rod moves linearly within the cylinder bore as hydraulic fluid or compressed air acts on the piston. It transfers force from the internal pressure differential to external machinery, with seals preventing fluid leakage and wipers excluding contaminants.
材料
Typically high-strength alloy steel (e.g.AISI 41401045 carbon steel) with chrome plating (hard chromethickness 20-40μm) for corrosion resistancewear resistanceand reduced friction. Alternative materials include stainless steel (31617-4PH) for corrosive environments.
Hardness
45-55 HRC (core), 65-70 HRC (chrome plating)
Length Range
50-6000 mm
Straightness
0.05 mm per 1000 mm
Surface Roughness
Ra 0.2-0.4 μm
Diameter Tolerance
h8/h9 (ISO)
标准
ISO 6020/2ISO 6432DIN 24554DIN ISO 3320

行业分类与别名

活塞杆 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

Improper alignment or side loading->Rod bending or scoring, leading to seal damage and fluid leakage->Use alignment couplings, ensure proper cylinder mounting, and specify adequate rod hardness
Insufficient chrome plating thickness or quality->Corrosion pitting and accelerated seal wear->Specify hard chrome plating per ISO 6158, conduct regular thickness checks

工业生态与工程逻辑

0
Fatigue failure from cyclic loading
1
Corrosion in humid/chemical environments
2
Seal wear due to surface imperfections
3
Bending from off-axis loads

合规与检测

tolerance
Diameter: h8/h9 per ISO 286, Straightness: ≤0.1 mm/m per ISO 1101
test method
Dimensional inspection (CMM), hardness testing (Rockwell), coating thickness (XRF), salt spray testing per ISO 9227

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

Why is chrome plating used on piston rods?

Chrome plating provides excellent corrosion resistance, reduces friction with seals, and enhances wear durability in harsh industrial environments.

What causes rod bending or scoring?

Misalignment, side loading, inadequate hardness, or contamination ingress can lead to bending, scoring, or seal damage, resulting in leakage and reduced efficiency.

我可以直接联系工厂吗?

CNFX 是开放目录,不是交易平台或采购代理。工厂资料和表单用于帮助你准备直接沟通。

CNFX Industrial Component Index · 机械和设备制造

数据基础

CNFX 制造商资料、技术分类、公开产品信息和持续合理性检查。

初步技术归类
本页用于结构化准备研究、RFQ 和供应商评估,不替代买方自己的供应商资质审查、标准核验和技术批准。

请求制造能力信息: 活塞杆

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URN:CNFX:ME:UNIT:ROD