行业组件数据 · 2026

外圈滚道

Outer raceway is the stationary ring in thrust bearings that provides the rolling surface for balls or rollers, supporting axial loads in rotating machinery.

技术定义与适配语境
典型 外圈滚道 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 outer raceway is a critical component of thrust bearings, designed as a hardened and precision-ground annular ring with a grooved track. It serves as the stationary counterpart to the inner raceway, providing a smooth, low-friction surface for rolling elements (balls or rollers) to rotate against while transmitting axial loads parallel to the shaft axis. Its geometry, surface finish, and material properties directly influence bearing capacity, speed limitations, and operational lifespan in applications ranging from automotive transmissions to industrial gearboxes.

组件规格

定义
The outer raceway is a critical component of thrust bearings, designed as a hardened and precision-ground annular ring with a grooved track. It serves as the stationary counterpart to the inner raceway, providing a smooth, low-friction surface for rolling elements (balls or rollers) to rotate against while transmitting axial loads parallel to the shaft axis. Its geometry, surface finish, and material properties directly influence bearing capacity, speed limitations, and operational lifespan in applications ranging from automotive transmissions to industrial gearboxes.
工作原理
The outer raceway operates by distributing axial loads across its contact surface with rolling elements through Hertzian contact mechanics. As the inner raceway rotates with the shaft, rolling elements circulate between the two raceways, reducing sliding friction to pure rolling motion. The raceway's groove profile maintains proper ball/roller alignment and preload, while its stationary mounting allows heat dissipation and structural stability under dynamic loading conditions.
材料
Typically manufactured from through-hardened or case-hardened alloy steels (AISI 52100ASTM A485)with surface hardness of 58-64 HRC. Alternative materials include stainless steels (440C) for corrosion resistance or ceramic-coated variants for high-temperature applications. Material specifications require controlled carbide distributionminimal inclusionsand precise heat treatment to prevent spalling or fatigue failure.
Groove Radius
52-53% of ball diameter
Hardness Depth
≥ 1.5 mm case depth
Roundness Error
≤ 5 μm
Surface Roughness
Ra ≤ 0.2 μm
Diameter Tolerance
ISO P6 or ABEC 5
标准
ISO 199DIN 711

行业分类与别名

外圈滚道 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 or contamination->Surface pitting and accelerated wear->Implement sealed bearing designs and scheduled oil analysis
Excessive axial preload or misalignment->Raceway cracking or plastic deformation->Use precision mounting tools and torque-controlled installation procedures

工业生态与工程逻辑

可替换件
0
Fatigue spalling from cyclic loading
1
Brinelling from shock loads
2
Corrosion pitting in humid environments
3
Geometric deformation from improper mounting

合规与检测

tolerance
ISO 199 Class Normal for general applications, Class 6 for precision machinery
test method
Coordinate measuring machine (CMM) verification per ISO 10360, surface roughness testing per ISO 4287, hardness testing per ASTM E18

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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 an outer raceway in thrust bearings?

It provides a stationary rolling surface to support axial loads while maintaining precise alignment of rolling elements, converting sliding friction into efficient rolling motion.

How does material selection affect outer raceway performance?

High-carbon chromium steels offer optimal hardness and fatigue resistance, while specialized coatings or stainless variants address corrosion, temperature extremes, or contamination risks in harsh environments.

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CNFX Industrial Component Index · 机械和设备制造

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初步技术归类
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URN:CNFX:ME:UNIT:OUTER_RACEWAY