行业组件数据 · 2026

阀杆体/轴

Precision-machined stem body/shaft component for linear motion transmission in industrial actuators and valves.

技术定义与适配语境
典型 阀杆体/轴 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 critical cylindrical component in stem/actuator assemblies that converts rotary motion from actuators into precise linear displacement, transmitting mechanical force while maintaining alignment and sealing integrity under operational loads.

组件规格

定义
A critical cylindrical component in stem/actuator assemblies that converts rotary motion from actuators into precise linear displacement, transmitting mechanical force while maintaining alignment and sealing integrity under operational loads.
工作原理
Operates on linear motion transmission principles where torque from the actuator rotates the stem, causing axial movement through threaded engagement or cam mechanisms to position valve plugs, gates, or other control elements.
材料
Typically manufactured from corrosion-resistant alloys: 316 stainless steel (ASTM A276)17-4PH stainless steelMonelHastelloyor titanium alloyshardness: 25-45 HRCsurface finish: 0.4-1.6 μm Ra.
Straightness
0.02 mm/m max
Pressure rating
Class 150-2500
Surface hardness
30-40 HRC
Diameter tolerance
±0.01 mm
Thread specification
ACME/UN/ISO metric
Max operating temperature
450°C
标准
ISO 5211ISO 5752DIN 3356ASME B16.34API 600

行业分类与别名

阀杆体/轴 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

Insufficient material strength for operating loads->Fatigue cracking or permanent deformation->Implement proper material selection with safety factors, conduct finite element analysis, and establish preventive maintenance schedules
Improper alignment during installation->Premature wear, binding, or bending failure->Use precision alignment tools during installation, implement laser alignment procedures, and design with self-aligning features

工业生态与工程逻辑

0
Fatigue failure from cyclic loading
1
Corrosion in aggressive media
2
Thread galling during operation
3
Bending under misalignment
4
Wear at sealing surfaces

合规与检测

tolerance
Geometric tolerances per ISO 2768-mK, surface finish per ISO 1302, dimensional accuracy ±0.5% of nominal diameter
test method
Dimensional verification with CMM, material certification per ASTM/EN standards, NDT inspection (MPI/DPI), pressure testing per API 598/ISO 5208

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 difference between stem body and stem shaft?

Stem body typically refers to the complete assembly including threaded sections and connection features, while stem shaft specifically denotes the cylindrical load-bearing portion. In practice, these terms are often used interchangeably for the main force-transmitting component.

How do I select the right material for stem body applications?

Material selection depends on operating environment: 316SS for general corrosion resistance, 17-4PH for high strength, Monel for seawater applications, Hastelloy for extreme corrosion, and titanium for weight-critical applications. Consider temperature, pressure, media compatibility, and cyclic loading.

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: 阀杆体/轴

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URN:CNFX:ME:UNIT:STEM_BODY_SHAFT