行业组件数据 · 2026

扭力轴

A torsion shaft is a precision mechanical component designed to transmit torque while measuring torsional deformation in torque transducers.

技术定义与适配语境
典型 扭力轴 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 torsion shaft is a specialized rotating shaft engineered to transmit torque between machine elements while undergoing controlled torsional deformation. In torque transducer applications, it serves as the primary sensing element where applied torque creates measurable angular displacement or strain, which is converted into electrical signals through strain gauges or other sensing technologies. The shaft's geometry, material properties, and surface finish are precisely controlled to ensure linear torque-strain relationships and minimal hysteresis.

组件规格

定义
A torsion shaft is a specialized rotating shaft engineered to transmit torque between machine elements while undergoing controlled torsional deformation. In torque transducer applications, it serves as the primary sensing element where applied torque creates measurable angular displacement or strain, which is converted into electrical signals through strain gauges or other sensing technologies. The shaft's geometry, material properties, and surface finish are precisely controlled to ensure linear torque-strain relationships and minimal hysteresis.
工作原理
The torsion shaft operates on the principle of torsional elasticity. When torque is applied, the shaft twists proportionally to the torque magnitude according to Hooke's law for shear stress (τ = Gγ). This angular deformation is measured using strain gauges bonded at 45° to the shaft axis (maximum shear stress direction) in a Wheatstone bridge configuration. The resulting electrical signal is proportional to the applied torque, enabling precise torque measurement while transmitting mechanical power.
材料
High-strength alloy steels (AISI 4340414017-4PH stainless steel)managing steelstitanium alloys (Ti-6Al-4V)or beryllium copper for specific applications. Materials are selected based on yield strengthshear modulusfatigue resistanceand thermal stability. Typical hardness: 40-50 HRC for steel shafts. Surface finish: 0.4-0.8 μm Ra for strain gauge bonding.
Length
200-1000 mm
Accuracy Class
0.1 to 1.0% FS
Diameter Range
10-100 mm
Torque Capacity
10 Nm to 50 kNm
Natural Frequency
500-5000 Hz
Torsional Stiffness
100-10000 Nm/rad
Maximum Shear Stress
300-800 MPa
Operating Temperature
-40°C to +120°C
标准
ISO 6789ISO 4964DIN 50125DIN 51309

行业分类与别名

扭力轴 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

Excessive torque beyond design limits->Plastic deformation or fracture of shaft->Install torque limiters or overload protection devices, implement torque monitoring systems
Corrosive environment without proper protection->Reduced cross-section and stress concentration leading to premature failure->Use corrosion-resistant materials, apply protective coatings, implement environmental controls
Improper alignment during installation->Increased bearing wear and vibration, inaccurate torque measurement->Use precision alignment tools, follow installation procedures, implement laser alignment verification

工业生态与工程逻辑

0
Fatigue failure from cyclic loading
1
Overload beyond yield point causing permanent deformation
2
Corrosion in harsh environments
3
Bearing seizure due to misalignment
4
Signal drift from temperature variations

合规与检测

tolerance
Diameter tolerance: h6/h7, Straightness: 0.05 mm/m, Surface finish: ±0.2 μm Ra
test method
Torque calibration per ISO 6789, Material testing per DIN 50125, Non-destructive testing (MPI/UT), Strain gauge performance verification

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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 difference between a torsion shaft and a regular drive shaft?

A torsion shaft is specifically designed with precise geometry and material properties to create measurable torsional deformation under torque, while a drive shaft is optimized for power transmission with minimal deformation. Torsion shafts have controlled stiffness and surface preparation for sensor mounting.

How do you calibrate a torsion shaft in a torque transducer?

Calibration involves applying known torque values using deadweight systems or reference transducers while measuring the output signal. The shaft is tested at multiple points across its range to establish linearity, hysteresis, and repeatability characteristics according to ISO 6789 standards.

What maintenance do torsion shafts require?

Regular inspection for surface damage, corrosion, or wear at bearing surfaces. Strain gauges and wiring should be checked for integrity. Periodic recalibration is recommended based on usage intensity and environmental conditions.

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