行业组件数据 · 2026

浮动活塞

A floating piston is a hydraulic component that separates fluid chambers while allowing pressure equalization in fluid reservoirs.

技术定义与适配语境
典型 浮动活塞 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。

A floating piston is a cylindrical component installed within a fluid reservoir that creates a barrier between two fluid chambers (typically hydraulic fluid and gas/air). It moves axially within the reservoir bore in response to pressure differentials, maintaining separation while allowing volume compensation. This design prevents fluid contamination, accommodates thermal expansion, and maintains system pressure stability in hydraulic and pneumatic systems.

组件规格

定义
A floating piston is a cylindrical component installed within a fluid reservoir that creates a barrier between two fluid chambers (typically hydraulic fluid and gas/air). It moves axially within the reservoir bore in response to pressure differentials, maintaining separation while allowing volume compensation. This design prevents fluid contamination, accommodates thermal expansion, and maintains system pressure stability in hydraulic and pneumatic systems.
工作原理
The floating piston operates on pressure differential principles. When hydraulic fluid volume increases (due to thermal expansion or system operation), the piston moves toward the gas chamber, compressing the gas. When fluid volume decreases, the gas expands, pushing the piston back toward the fluid chamber. This maintains constant pressure on the fluid side while keeping the two media completely separated.
材料
Carbon steel (AISI 1045/4140)stainless steel (304/316)aluminum alloys (6061-T6)with nitrile (NBR)fluorocarbon (FKM)or polyurethane (PU) seals. Surface treatments include hard chrome platingnickel platingor anodizing for aluminum.
Seal Type
Double-acting rod seals
Stroke Length
50-500 mm
Diameter Range
25-300 mm
Surface Finish
Ra 0.4 μm or better
Pressure Rating
Up to 350 bar
Temperature Range
-40°C to +120°C
标准
ISO 6020-2ISO 10763DIN 24342SAE J518

行业分类与别名

浮动活塞 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

Seal degradation due to chemical incompatibility->Fluid mixing between chambers->Use compatible seal materials, implement regular fluid analysis, and follow manufacturer's maintenance schedules
Contamination in hydraulic fluid->Bore scoring and piston sticking->Install proper filtration systems, maintain fluid cleanliness to ISO 4406 standards, and use wear-resistant materials
Improper installation alignment->Uneven wear and premature failure->Follow precise installation procedures, use alignment tools, and verify bore concentricity during assembly

工业生态与工程逻辑

0
Seal failure leading to fluid contamination
1
Piston sticking due to bore scoring
2
Corrosion in aggressive environments
3
Pressure imbalance causing component damage

合规与检测

tolerance
H7/g6 fit for bore/piston clearance, concentricity within 0.05 mm TIR, surface roughness Ra ≤ 0.4 μm
test method
Pressure decay testing per ISO 188, seal compatibility testing per ASTM D471, material verification per ASTM A370/ASTM E8

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 is the main purpose of a floating piston in a fluid reservoir?

The primary purpose is to separate two different fluids (typically hydraulic oil and nitrogen gas) while allowing pressure equalization between them, preventing contamination and accommodating volume changes.

How does a floating piston differ from a standard piston?

A floating piston is not connected to a rod or actuator; it moves freely within its bore in response to pressure differentials. Standard pistons are typically connected to mechanical linkages and have controlled movement.

What maintenance is required for floating pistons?

Regular inspection of seals for wear, monitoring for leakage between chambers, checking for scoring on the bore surface, and ensuring proper lubrication if specified by the manufacturer.

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: 浮动活塞

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。

谢谢,信息已发送。
谢谢,信息已收到。

需要制造 浮动活塞?

对比具备该组件加工或装配能力的制造商资料。

创建制造商档案 联系我们
上一个组件
浮体
下一个组件
浮球
URN:CNFX:ME:UNIT:FLOATING_PISTON