行业组件数据 · 2026

安装法兰/凸台

A mounting flange or boss is a structural component designed to provide a secure attachment point for connecting machine parts, typically featuring bolt holes and precise alignment features.

技术定义与适配语境
典型 安装法兰/凸台 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 mounting flange or boss is a machined component integral to port bodies and fittings, engineered to facilitate the secure and precise connection of adjacent machine elements. It typically consists of a flat, circular, or rectangular projection with drilled and tapped holes for bolts, ensuring proper alignment, load distribution, and sealing integrity in fluid or mechanical systems. The design incorporates features like pilot diameters, dowel pin holes, or O-ring grooves to maintain positional accuracy and prevent leakage under operational stresses.

组件规格

定义
A mounting flange or boss is a machined component integral to port bodies and fittings, engineered to facilitate the secure and precise connection of adjacent machine elements. It typically consists of a flat, circular, or rectangular projection with drilled and tapped holes for bolts, ensuring proper alignment, load distribution, and sealing integrity in fluid or mechanical systems. The design incorporates features like pilot diameters, dowel pin holes, or O-ring grooves to maintain positional accuracy and prevent leakage under operational stresses.
工作原理
The mounting flange/boss operates on the principle of providing a rigid, precisely located interface for bolted connections. It transfers loads (such as mechanical forces, vibrations, or pressure) from the attached component to the main port body, distributing stress evenly through its geometry and fastener pattern. Alignment features ensure correct orientation, while sealing surfaces prevent fluid or gas leakage, maintaining system integrity.
材料
Common materials include carbon steel (e.g.AISI 1045)stainless steel (e.g.AISI 304 or 316 for corrosion resistance)aluminum alloys (e.g.6061-T6 for lightweight applications)or ductile iron. Material selection depends on factors like strength requirementscorrosion resistanceweightand cost. Specifications often include hardness (e.g.Rockwell C scale for steel)tensile strengthand surface finish (e.g.Ra 1.6 μm for sealing surfaces).
Bolt Size
M6 to M16 metric or equivalent imperial
Pressure Rating
Up to 300 bar (depending on design)
Flange Thickness
10 mm to 30 mm
Surface Flatness
0.05 mm per 100 mm
Bolt Circle Diameter
Varies by application (e.g., 50 mm to 200 mm)
Number of Bolt Holes
Typically 4, 6, or 8
Pilot Diameter Tolerance
H7/g6 fit
标准
ISO 6162ISO 3019-2DIN 2501SAE J518

行业分类与别名

安装法兰/凸台 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

Improper bolt torque during installation->Stripped threads or cracked flange, leading to connection failure and potential system leakage->Use calibrated torque wrenches, follow manufacturer specifications, and implement training for assembly personnel
Material corrosion in wet or chemical environments->Reduced structural integrity, leading to cracks or bolt hole enlargement and eventual component failure->Select corrosion-resistant materials (e.g., stainless steel), apply protective coatings, and conduct regular inspections
Vibration or cyclic loading in operation->Fatigue cracking at stress concentration points (e.g., bolt holes), resulting in catastrophic failure over time->Design with adequate fillet radii, use fatigue-resistant materials, and implement preventive maintenance schedules

工业生态与工程逻辑

0
Misalignment during assembly
1
Bolt over-torquing
2
Corrosion in harsh environments
3
Fatigue cracking under cyclic loads
4
Leakage due to poor surface finish

合规与检测

tolerance
Geometric tolerances per ISO 1101 (e.g., flatness within 0.1 mm, position tolerance for bolt holes within 0.05 mm). Dimensional tolerances for critical features like pilot diameters typically follow ISO 286 (e.g., H7 for holes, g6 for shafts).
test method
Testing includes dimensional inspection using CMM (Coordinate Measuring Machine) or gauges, pressure testing to verify sealing integrity (e.g., hydrostatic test per ISO 5208), and material certification (e.g., mill test reports for metals). Non-destructive testing (NDT) like dye penetrant or ultrasonic inspection may be used for crack detection.

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 difference between a mounting flange and a boss?

A mounting flange is typically a flat, extended surface with bolt holes for connecting larger components, while a boss is a smaller, raised projection often used for localized attachment or reinforcement. In practice, the terms are sometimes used interchangeably for port body fittings.

How do I select the right material for a mounting flange/boss?

Consider operational environment (e.g., corrosion, temperature), load requirements, weight constraints, and compatibility with connected parts. For example, use stainless steel in corrosive settings, aluminum for lightweight needs, or carbon steel for high-strength applications.

What are common failure modes for mounting flanges/bosses?

Common failures include bolt hole stripping due to overtightening, cracking from fatigue or impact loads, misalignment causing leakage, and corrosion leading to structural weakness. Proper installation, material selection, and regular inspection can mitigate these risks.

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CNFX Industrial Component Index · 机械和设备制造

数据基础

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URN:CNFX:ME:UNIT:MOUNTING_FLANGE_BOSS