Wheel Flange: Flange Diameter 150-250mm, Thickness 12-25mm

Component Specifications

Definition

A wheel flange is a precisely machined metal component that forms the mounting interface between a vehicle's wheel and its axle hub assembly. It features a circular plate with multiple bolt holes arranged in a specific pattern (bolt circle diameter) that matches the hub's stud pattern. The flange provides a flat, perpendicular surface for the wheel to seat against, ensuring proper load distribution and preventing lateral runout. It incorporates a center bore that aligns with the hub's pilot diameter for accurate centering, and often includes features like raised pads or recesses to accommodate wheel balancing weights. The flange's thickness and material properties are engineered to withstand rotational forces, braking torque, and vertical loads while maintaining dimensional stability under thermal and mechanical stress.

Working Principle

The wheel flange operates on mechanical fastening and precision interface principles. When the wheel is mounted, the flange's bolt holes align with the hub studs, allowing lug nuts to clamp the wheel assembly securely. The center bore provides initial centering during installation, while the flat mounting surface ensures even contact pressure distribution. Under operation, the flange transmits driving torque from the hub to the wheel, resists braking forces, and supports vehicle weight through compressive loading. Its design minimizes stress concentrations and maintains wheel alignment by providing a stable reference plane perpendicular to the rotational axis.

Materials

Typically manufactured from forged or cast steel alloys (SAE 1045, 4140, or similar grades) with yield strengths of 400-800 MPa. Aluminum alloys (6061-T6, 7075-T6) are used in performance applications for weight reduction. Surface treatments include zinc plating, powder coating, or anodizing for corrosion resistance. Heat treatment processes (quenching and tempering) enhance hardness and fatigue resistance.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Thickness	12-25mm
Bolt Pattern	5x114.3mm, 6x139.7mm, etc.
Flange Diameter	150-250mm
Surface Hardness	HRC 25-40
Bolt Hole Diameter	14-20mm
Flatness Tolerance	≤0.1mm
Center Bore Diameter	66.1mm, 72.6mm, etc.

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Standards

ISO 4107, ISO 7119-1, DIN 743, SAE J175

Parent Products

This component is used in the following industrial products

Wheel Assembly

A complete set of components that form the rolling mechanism of an end truck, enabling movement along rails or tracks.

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Engineering Analysis

Risks & Mitigation

Improper installation causing wheel detachment
Corrosion leading to weakened structural integrity
Fatigue cracking from cyclic loading
Improper torque causing bolt failure
Manufacturing defects creating stress concentrations

FMEA Triads

Trigger: Over-torquing lug nuts during installation
Failure: Bolt hole deformation or cracking
Mitigation: Use calibrated torque wrenches and follow manufacturer specifications; implement torque verification procedures

Trigger: Corrosive environment without proper protection
Failure: Material thinning and reduced load capacity
Mitigation: Apply corrosion-resistant coatings; implement regular inspection schedules; use stainless steel components in severe environments

Trigger: Manufacturing imperfections in heat treatment
Failure: Reduced fatigue strength leading to crack propagation
Mitigation: Implement strict quality control on material certification and heat treatment processes; conduct periodic destructive testing

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

Bolt hole position: ±0.1mm; Flatness: 0.1mm maximum deviation; Center bore diameter: H7 tolerance; Surface roughness: Ra 3.2μm maximum

Test Method

Dimensional verification using CMM; Torque-to-yield testing; Salt spray testing per ASTM B117; Fatigue testing per SAE J328; Hardness testing per ASTM E18

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

Verify equipment lists, process limits, capacity, and representative production evidence.

Inspection readiness

Confirm test methods, calibrated equipment, sampling plans, and traceable reports.

Supplier transparency

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Manufacturers of Wheel Flange

Manufacturer profiles associated with Wheel Flange.

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Frequently Asked Questions

What is the purpose of the center bore in a wheel flange?

The center bore provides precise initial centering of the wheel on the hub, ensuring even load distribution and reducing stress on the lug nuts. Proper centering prevents vibration and improves wheel balance.

Can wheel flanges be interchanged between different vehicle models?

No, wheel flanges are vehicle-specific due to variations in bolt patterns, center bore diameters, offset requirements, and load ratings. Using incorrect flanges can cause improper wheel seating, vibration, and safety hazards.

How do I identify a damaged wheel flange?

Look for visible cracks, warping, stripped bolt threads, excessive corrosion, or scoring on the mounting surface. Vibration during driving or difficulty achieving proper wheel torque may indicate flange issues.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

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.

Wheel Flange