行业组件数据 · 2026

环形齿轮法兰

A precision-machined flange that connects the ring gear to the differential case in automotive differential assemblies, ensuring proper torque transfer and alignment.

技术定义与适配语境
典型 环形齿轮法兰 会按材料、尺寸公差、适配关系和失效风险在 汽车制造 中评估。

The Ring Gear Flange is a critical interface component in automotive differential systems that serves as the mounting surface and torque transfer point between the ring gear and differential case. It features precisely machined bolt holes, pilot surfaces, and mounting faces that maintain concentricity and perpendicularity between the ring gear and differential housing. This component must withstand high torsional loads, shear forces, and thermal cycling while maintaining dimensional stability throughout the vehicle's service life.

组件规格

定义
The Ring Gear Flange is a critical interface component in automotive differential systems that serves as the mounting surface and torque transfer point between the ring gear and differential case. It features precisely machined bolt holes, pilot surfaces, and mounting faces that maintain concentricity and perpendicularity between the ring gear and differential housing. This component must withstand high torsional loads, shear forces, and thermal cycling while maintaining dimensional stability throughout the vehicle's service life.
工作原理
The flange operates by providing a rigid, precisely aligned connection between the ring gear and differential case. When torque is applied through the drive pinion to the ring gear, the flange transmits this rotational force to the differential case while maintaining proper gear mesh alignment. The bolt pattern distributes clamping forces evenly, while the pilot diameter ensures concentric alignment to prevent runout and vibration.
材料
Typically forged or machined from SAE 8620 or SAE 4140 alloy steelheat-treated to 28-32 HRC for optimal strength and wear resistance. Alternative materials include ductile iron (ASTM A536) for cost-sensitive applications or micro-alloyed steels for weight reduction.
Bolt Size
M10-M14
Bolt Quantity
8-12
Surface Finish
Ra 1.6-3.2 μm
Flange Thickness
15-25 mm
Runout Tolerance
0.08 mm
Flatness Tolerance
0.05 mm
Bolt Circle Diameter
150-250 mm
Pilot Diameter Tolerance
H7/h6
标准
ISO 286-2DIN 3961SAE J429ISO 2768-mK

行业分类与别名

环形齿轮法兰 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 bolt torque or uneven tightening sequence->Joint slippage leading to fretting wear and eventual catastrophic failure->Implement torque-angle tightening procedures with calibrated tools and verify with ultrasonic bolt tension measurement
Material inclusions or improper heat treatment->Fatigue cracking originating from subsurface defects->Implement 100% magnetic particle inspection and batch material certification to ASTM A388 standards
Thermal cycling in extreme operating conditions->Differential thermal expansion causing loss of preload and misalignment->Design with matched thermal expansion coefficients and implement thermal barrier coatings where applicable

工业生态与工程逻辑

0
Bolt hole elongation under cyclic loading
1
Surface fretting corrosion
2
Fatigue cracking at stress concentrations
3
Thermal distortion affecting alignment
4
Improper bolt torque leading to joint failure

合规与检测

tolerance
Geometric tolerances per ISO 1101, dimensional tolerances per ISO 286-2, surface finish per ISO 1302
test method
Dimensional verification with CMM, surface hardness testing per ASTM E18, magnetic particle inspection per ASTM E1444, torque-to-yield testing per SAE J1740

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 a ring gear flange?

The primary function is to provide a rigid, precisely aligned connection between the ring gear and differential case, ensuring proper torque transfer while maintaining gear mesh alignment under varying load conditions.

Can ring gear flanges be interchanged between different vehicle models?

No, they are typically model-specific due to variations in bolt patterns, pilot diameters, and thickness requirements. Always consult manufacturer specifications before attempting interchange.

What are common failure modes for ring gear flanges?

Common failures include bolt hole elongation, surface fretting, pilot diameter wear, and fatigue cracking at stress concentration points, often caused by improper torque, misalignment, or material defects.

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CNFX Industrial Component Index · 汽车制造

数据基础

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