行业组件数据 · 2026

枢轴衬套

Pivot bushings are precision-engineered components that provide smooth rotational movement and load support in boom arm joints.

技术定义与适配语境
典型 枢轴衬套 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。

Pivot bushings are cylindrical sleeve bearings designed to facilitate controlled rotational motion between connected parts in boom arm assemblies. They serve as interface elements between pivot pins and arm structures, reducing friction, absorbing radial loads, and maintaining precise alignment under dynamic operating conditions. These components are critical for ensuring smooth articulation, minimizing wear, and extending the service life of lifting equipment.

组件规格

定义
Pivot bushings are cylindrical sleeve bearings designed to facilitate controlled rotational motion between connected parts in boom arm assemblies. They serve as interface elements between pivot pins and arm structures, reducing friction, absorbing radial loads, and maintaining precise alignment under dynamic operating conditions. These components are critical for ensuring smooth articulation, minimizing wear, and extending the service life of lifting equipment.
工作原理
Pivot bushings operate on the principle of sliding or rolling friction reduction. They create a low-friction interface between stationary and rotating parts, allowing boom arms to pivot smoothly while distributing mechanical loads evenly across the bearing surface. The bushing material provides sacrificial wear characteristics, protecting more expensive components from direct metal-to-metal contact and premature failure.
材料
High-strength bronze alloys (C93200/C95400)hardened steel with polymer linersself-lubricating composites with PTFE/Graphiteor engineered plastics (POMNylon 66) with reinforcement fibers.
Length
25-150 mm
Load Capacity
5-50 kN
Inner Diameter
20-100 mm
Outer Diameter
30-120 mm
Surface Hardness
60-90 HRB
Clearance Tolerance
H7/g6
Operating Temperature
-40°C to +120°C
标准
ISO 3547DIN 1494SAE J429

行业分类与别名

枢轴衬套 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 overheating->Implement automated lubrication systems and regular maintenance schedules
Contaminant ingress->Abrasive wear and surface damage->Install effective seals and protective covers

工业生态与工程逻辑

可替换件
0
Wear-induced misalignment
1
Lubrication failure leading to seizure
2
Corrosion in harsh environments
3
Overload causing deformation

合规与检测

tolerance
±0.05mm dimensional accuracy, surface finish Ra 1.6μm maximum
test method
ASTM D3702 for wear testing, ISO 4378 for friction coefficient measurement

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 primary function of pivot bushings in boom arms?

Pivot bushings reduce friction between moving parts, distribute loads evenly, and maintain precise alignment during boom arm articulation, preventing premature wear and ensuring smooth operation.

How often should pivot bushings be inspected or replaced?

Inspect every 500 operating hours and replace when wear exceeds 0.5mm or when visible scoring, cracking, or excessive play is detected. Regular lubrication extends service intervals.

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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:PIVOT_BUSHINGS