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Flange Face Component – Machinery and Equipment Manufacturing

Component Specifications

Definition

The Flange Face is a critical component of a coupling hub, specifically the flat, perpendicular surface that interfaces with a corresponding flange on another shaft or coupling half. It is precisely machined to achieve required flatness and surface finish, ensuring uniform contact pressure distribution when bolted. This component facilitates the transfer of torque while maintaining shaft alignment, minimizing vibration, and preventing premature wear in mechanical power transmission systems.

Working Principle

The Flange Face operates on the principle of creating a rigid, friction-based connection between two rotating elements. When bolted together under specified torque, the mating flange faces create a uniform clamping force that transmits rotational energy through shear stress across the interface. The precision surface ensures maximum contact area, distributing loads evenly to prevent stress concentration and maintain concentricity between connected shafts.

Materials

Typically manufactured from medium-carbon steel (e.g., AISI 1045, 4140) or alloy steel, often heat-treated to achieve hardness of 28-32 HRC. Corrosion-resistant applications may use stainless steel (304/316) or coated carbon steel. Material selection depends on torque requirements, environmental conditions, and compatibility with connected components.

Technical Parameters

Diameter Range 50-500 mm
Pilot Diameter Optional for precise alignment
Surface Finish Ra 3.2 μm or better
Bolt Hole Quantity 4-12 holes (evenly spaced)
Flatness Tolerance 0.05 mm maximum
Bolt Circle Diameter Standardized per flange size
Maximum Torque Capacity Varies by size and material

Standards

ISO 9001, DIN 7526, AGMA 9002

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Flange Face.

Parent Products

This component is used in the following industrial products

Coupling Hub

The central connecting element of a shaft coupling that mounts directly onto the shaft ends to transmit torque between rotating components.

View Product Details

Flange Housing

A structural component that provides mounting and sealing interface for sight glass assemblies in industrial equipment.

View Product Details

Engineering Analysis

Risks & Mitigation

Improper bolt torque causing uneven loading
Surface damage from corrosion or impact
Misalignment during assembly
Fatigue failure from cyclic loading

FMEA Triads

Trigger: Insufficient bolt torque during assembly
Failure: Slippage between flange faces, resulting in lost torque transmission and potential catastrophic disconnection
Mitigation: Implement torque verification procedures using calibrated tools; use thread locking compounds where appropriate

Trigger: Corrosion or contamination on mating surfaces
Failure: Reduced friction coefficient leading to slippage, or uneven contact causing vibration and accelerated wear
Mitigation: Apply protective coatings; implement cleaning protocols before assembly; use sealing compounds in corrosive environments

Trigger: Exceeding design torque capacity
Failure: Plastic deformation of flange face, loss of flatness, and potential bolt failure
Mitigation: Install torque limiters or shear pins; conduct regular load monitoring; ensure proper component sizing for application

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance

Flatness: ±0.05 mm; Parallelism: 0.1 mm per 100 mm diameter; Surface roughness: Ra ≤ 3.2 μm

Test Method

Surface plate inspection with feeler gauges; Coordinate measuring machine (CMM) verification; Surface roughness tester; Dye penetrant testing for cracks

Procurement Evaluation Criteria

Not customer reviews or live demand data. These dimensions support RFQ preparation and supplier evaluation.

Technical documentation

4/5

Manufacturing capability

4/5

Inspection readiness

5/5

Supplier transparency

3/5

These scores are example evaluation dimensions, not real customer ratings, country-specific buyer feedback, or live inquiry activity.

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Frequently Asked Questions

What is the purpose of the pilot diameter on some flange faces?

The pilot diameter provides initial concentric alignment before bolting, ensuring proper mating and reducing assembly time. It helps prevent misalignment that could cause vibration or premature wear.

How does surface finish affect flange face performance?

A smoother surface finish (lower Ra value) improves contact uniformity, reduces fretting corrosion, and enhances torque transmission efficiency. However, excessively smooth surfaces may require higher bolt torque to achieve sufficient friction.

Can damaged flange faces be repaired?

Minor damage can sometimes be repaired by precision machining or lapping, but significant damage usually requires component replacement. Repair must maintain original flatness and dimensional specifications.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

Data Basis

CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks.

Preliminary Technical Classification

This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

Flange Face