行业组件数据 · 2026

阀芯

Precision spool component for servo valves controlling fluid flow in industrial systems.

技术定义与适配语境
典型 阀芯 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 spool is a cylindrical sliding component within a servo valve that precisely regulates hydraulic or pneumatic fluid flow by moving within a valve body to open, close, or meter ports. It converts electrical control signals from the servo valve's torque motor into mechanical displacement, enabling accurate control of fluid pressure, flow rate, and direction in industrial automation systems.

组件规格

定义
A spool is a cylindrical sliding component within a servo valve that precisely regulates hydraulic or pneumatic fluid flow by moving within a valve body to open, close, or meter ports. It converts electrical control signals from the servo valve's torque motor into mechanical displacement, enabling accurate control of fluid pressure, flow rate, and direction in industrial automation systems.
工作原理
The spool operates on the principle of axial displacement within a matched bore. When the servo valve's torque motor receives an electrical signal, it generates torque that moves the spool via a flapper or direct linkage. This displacement changes the overlap between spool lands and valve ports, modulating fluid flow proportionally to the input signal. Feedback mechanisms (mechanical, electrical, or hydraulic) ensure precise positioning for closed-loop control.
材料
Typically made from hardened alloy steels (e.g.AISI 52100440C stainless steel) or carburized steels for wear resistance. Surface treatments include chrome platingnitridingor DLC coatings to reduce friction and corrosion. Materials must exhibit high dimensional stabilitylow thermal expansionand compatibility with hydraulic fluids (e.g.petroleum-basedsyntheticor fire-resistant fluids).
Response Time
<10 ms
Surface Finish
Ra 0.1-0.4 μm
Spool Clearance
5-15 μm
Temperature Range
-40°C to 120°C
Diameter Tolerance
±0.002 mm
Operating Pressure
Up to 350 bar
标准
ISO 4401DIN 24342ISO 10770-1

行业分类与别名

阀芯 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

Fluid contamination (particles, water)->Spool sticking, increased friction, or scoring->Implement filtration systems (e.g., 3 μm filters), regular fluid analysis, and use sealed reservoirs.
Wear from cyclic operation->Increased clearance, leakage, loss of precision->Use hardened materials with coatings, maintain proper lubrication, and schedule preventive replacements based on operating hours.
Improper installation or alignment->Binding, uneven wear, reduced valve efficiency->Follow torque specifications during assembly, use alignment tools, and conduct post-installation testing.

工业生态与工程逻辑

0
Contamination leading to spool sticking or wear
1
Improper alignment causing leakage or reduced response
2
Material incompatibility with hydraulic fluids
3
Overpressure damaging spool lands

合规与检测

tolerance
Dimensional tolerances per ISO 286, surface finish per ISO 1302, and pressure ratings per ISO 10770-1.
test method
Testing includes dimensional verification (CMM), leakage tests (ISO 6403), response time measurement (step input), and endurance cycling (ISO 10770-1).

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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 primary function of a spool in a servo valve?

The spool precisely controls fluid flow by moving axially to open, close, or meter ports, enabling accurate regulation of pressure, flow rate, and direction based on electrical input signals.

How do you maintain a servo valve spool?

Maintain fluid cleanliness (ISO 4406 class 16/14/11 or better), monitor for wear or contamination, and follow manufacturer guidelines for inspection intervals. Replace if tolerances exceed specifications or scoring is visible.

Can spools be interchanged between different servo valve brands?

Generally not interchangeable due to precise dimensional and material specifications unique to each valve model. Always use OEM or certified compatible parts to ensure performance and safety.

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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: 阀芯

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:SPOOL