行业组件数据 · 2026

阀杆螺母/轭架

A stem nut/yoke is a precision mechanical component that converts rotary motion into linear motion in control mechanisms, typically used in valve actuators and positioning systems.

技术定义与适配语境
典型 阀杆螺母/轭架 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 stem nut/yoke is a critical component in linear motion control systems, consisting of a threaded nut (stem nut) that engages with a screw or stem, and a yoke structure that provides mounting and alignment. It serves as the interface between rotary actuators and linear movement elements, enabling precise positioning and force transmission in industrial control applications. The component ensures smooth conversion of rotational energy to controlled linear displacement with minimal backlash.

组件规格

定义
The stem nut/yoke is a critical component in linear motion control systems, consisting of a threaded nut (stem nut) that engages with a screw or stem, and a yoke structure that provides mounting and alignment. It serves as the interface between rotary actuators and linear movement elements, enabling precise positioning and force transmission in industrial control applications. The component ensures smooth conversion of rotational energy to controlled linear displacement with minimal backlash.
工作原理
The stem nut converts rotary motion from an actuator into linear motion through threaded engagement with a lead screw or valve stem. The yoke provides structural support and alignment, distributing loads evenly while maintaining precise linear guidance. When the actuator rotates the nut, the threaded interface causes linear displacement of the connected mechanism along the screw axis, allowing for controlled positioning and force application.
材料
Typically manufactured from high-strength materials: carbon steel (AISI 10454140)stainless steel (30431617-4PH)bronze (C93200C95400)or engineered polymers (POMPTFE composites) for specific applications requiring corrosion resistancewear resistanceor reduced friction.
Backlash
<0.1 mm
Lubrication
Grease or oil-filled
Thread Type
Acme, Metric, UNC/UNF
Thread Pitch
2-20 mm/turn
Load Capacity
500-50000 N
Operating Temperature
-40°C to 200°C
标准
ISO 2901ISO 965DIN 103DIN 13

行业分类与别名

阀杆螺母/轭架 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

Inadequate lubrication->Increased friction and wear on threads->Implement scheduled lubrication maintenance and use appropriate lubricants for operating conditions
Misalignment during installation->Uneven load distribution and premature wear->Use precision alignment tools during installation and verify parallelism
Excessive load beyond design limits->Thread deformation or fracture->Install load monitoring systems and ensure proper sizing for application requirements

工业生态与工程逻辑

0
Thread wear leading to increased backlash
1
Misalignment causing binding or uneven wear
2
Corrosion in harsh environments
3
Overloading leading to thread deformation or fracture

合规与检测

tolerance
Thread tolerance: ISO 965 medium class, Positional tolerance: ±0.05 mm
test method
Dimensional verification per ISO 1, Load testing per ISO 898, Wear testing per ASTM G99

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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 stem nut/yoke in control mechanisms?

It converts rotary motion from actuators into precise linear motion for positioning valves, gates, or other control elements in industrial systems.

How do I select the right material for a stem nut/yoke application?

Consider operating environment (corrosion, temperature), load requirements, wear resistance needs, and compatibility with mating components. Stainless steel for corrosive environments, bronze for wear resistance, polymers for reduced friction.

What maintenance is required for stem nut/yoke components?

Regular lubrication inspection, backlash measurement, wear assessment on threads, and alignment checks to ensure optimal performance and prevent premature failure.

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URN:CNFX:ME:UNIT:STEM_NUT_YOKE