行业组件数据 · 2026

连杆端部

A precision mechanical component that connects the piston to the crankshaft in reciprocating engines and machinery, converting linear motion to rotational motion.

技术定义与适配语境
典型 连杆端部 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 connection rod end is the critical interface component in actuator and lever systems that transmits force between moving parts. In internal combustion engines, it connects the piston pin to the crankshaft journal, while in industrial machinery, it serves as the linkage between linear actuators and rotating mechanisms. This component must withstand high cyclic loads, maintain precise alignment, and provide reliable motion transfer throughout its service life.

组件规格

定义
The connection rod end is the critical interface component in actuator and lever systems that transmits force between moving parts. In internal combustion engines, it connects the piston pin to the crankshaft journal, while in industrial machinery, it serves as the linkage between linear actuators and rotating mechanisms. This component must withstand high cyclic loads, maintain precise alignment, and provide reliable motion transfer throughout its service life.
工作原理
The connection rod end operates on the principle of converting reciprocating linear motion into rotational motion (or vice versa) through a pinned joint connection. It consists of a bearing surface that rotates around a fixed point (crankpin or pivot), while the opposite end moves in a linear path. This creates a mechanical advantage that amplifies force or displacement depending on the lever ratio and application requirements.
材料
Typically forged or machined from high-strength alloy steels (AISI 43404140300M)titanium alloys (Ti-6Al-4V) for weight-critical applicationsor aluminum alloys (7075-T6) for lower-load scenarios. Bearing surfaces often feature bronze bushingsneedle roller bearingsor plain bearings with specialized coatings.
Length
50-300mm
Weight
0.2-5.0kg
Bore Diameter
20-100mm
Load Capacity
5-500kN
Bolt Circle Diameter
30-120mm
Operating Temperature
-40°C to 200°C
标准
ISO 13534DIN 7526SAE J429ASTM A29

行业分类与别名

连杆端部 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 lubrication->Bearing seizure and catastrophic rod failure->Implement automated lubrication systems with flow monitoring and regular maintenance schedules
Material fatigue from high-cycle loading->Crack propagation leading to fracture->Use ultrasonic testing during inspections, implement load monitoring systems, and follow manufacturer's replacement intervals
Improper installation alignment->Accelerated wear and vibration-induced failures->Use laser alignment tools during installation, implement torque verification procedures, and conduct run-in tests

工业生态与工程逻辑

0
Fatigue failure from cyclic loading
1
Bearing seizure due to lubrication failure
2
Misalignment causing premature wear
3
Corrosion in harsh environments
4
Over-torquing of fasteners leading to distortion

合规与检测

tolerance
Bore diameter: H7/h6 fit, Length: ±0.05mm, Parallelism: 0.02mm per 100mm, Surface finish: Ra 0.8-1.6μm
test method
Dimensional inspection per ISO 1101, Hardness testing per ASTM E18, Fatigue testing per ISO 13534, Non-destructive testing (MPI/UT) per ASTM E1444/E2375

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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 connection rod end and a rod end bearing?

A connection rod end refers specifically to the terminal portion of a connecting rod that interfaces with another component, while a rod end bearing (heim joint) is a self-contained assembly with a spherical bearing that allows for angular misalignment. Connection rod ends may incorporate bearings but are designed as integral parts of larger rod assemblies.

How often should connection rod ends be inspected in industrial applications?

In continuous operation machinery, visual inspection should occur monthly, with dimensional checks every 6-12 months depending on load cycles. High-vibration applications may require more frequent inspection (every 3 months). Replacement is typically needed when wear exceeds 0.1mm or when surface damage is visible.

Can connection rod ends be reconditioned or must they always be replaced?

Some connection rod ends with replaceable bushings or bearings can be reconditioned by replacing worn components. However, forged or integral rod ends with worn bearing surfaces typically require complete replacement due to the precision required for proper alignment and load distribution.

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CNFX Industrial Component Index · 机械和设备制造

数据基础

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初步技术归类
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URN:CNFX:ME:UNIT:CONNECTION_ROD_END