行业组件数据 · 2026

活塞/气缸

Pistons and cylinders are hydraulic components that convert fluid pressure into linear mechanical motion in swing motors.

技术定义与适配语境
典型 活塞/气缸 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。

Pistons and cylinders are precision-engineered hydraulic components that form the core actuation mechanism in swing motors. The piston moves within the cylinder bore under hydraulic pressure, creating reciprocating motion that drives the motor's rotation. These components are designed to withstand high pressure cycles, maintain tight sealing, and operate efficiently with minimal friction and wear.

组件规格

定义
Pistons and cylinders are precision-engineered hydraulic components that form the core actuation mechanism in swing motors. The piston moves within the cylinder bore under hydraulic pressure, creating reciprocating motion that drives the motor's rotation. These components are designed to withstand high pressure cycles, maintain tight sealing, and operate efficiently with minimal friction and wear.
工作原理
Hydraulic fluid under pressure enters the cylinder chamber, exerting force on the piston surface. This force causes the piston to move linearly within the cylinder bore. Multiple pistons arranged radially or axially work in sequence to create continuous rotational torque output through mechanical linkages to the motor shaft.
材料
Pistons: Hardened alloy steel (AISI 41404340) or ductile iron with chrome plating. Cylinders: High-strength steel (AISI 10454130) with honed or ground interior surfaces. Seals: Nitrile rubber (NBR)polyurethane (PU)or fluorocarbon (FKM) for high-pressure applications.
Hardness
58-62 HRC (piston), 45-50 HRC (cylinder)
Clearance
10-25 μm
Surface Finish
Ra 0.2-0.4 μm
Pressure Rating
200-350 bar
Temperature Range
-20°C to 100°C
标准
ISO 4394-1ISO 1219DIN 24342DIN 24343

行业分类与别名

活塞/气缸 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

Contaminated hydraulic fluid->Abrasive wear on piston and cylinder surfaces->Implement proper filtration systems (10 μm or finer), regular fluid analysis, and scheduled maintenance
Improper installation alignment->Uneven wear and premature seal failure->Use alignment tools during assembly, follow torque specifications, and verify concentricity

工业生态与工程逻辑

0
Hydraulic fluid contamination
1
Seal failure under high pressure
2
Cylinder wall scoring
3
Piston rod bending
4
Cavitation damage

合规与检测

tolerance
Cylinder bore: H7, Piston diameter: f6-f7, Surface roughness: Ra ≤ 0.4 μm
test method
Pressure testing per ISO 4409, leakage testing per ISO 10767-1, endurance testing with minimum 1 million cycles

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

What causes piston scoring in swing motors?

Piston scoring typically results from contamination in hydraulic fluid, inadequate lubrication, misalignment, or excessive side loads. Regular fluid filtration and proper installation prevent this issue.

How often should piston seals be replaced?

Seal replacement intervals depend on operating conditions, but typically range from 2,000 to 5,000 hours. Monitor for pressure drops, external leaks, or reduced performance as indicators.

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CNFX Industrial Component Index · 机械和设备制造

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: 活塞/气缸

说明目标数量、应用场景、交期和关键技术要求,用于准备 RFQ 或供应商评估。

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URN:CNFX:ME:UNIT:PISTONS_CYLINDERS