INDUSTRY COMPONENT

Axle

A central shaft for rotating wheels or gears, transmitting torque and supporting loads in wheel assemblies.

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Component Specifications

Definition
An axle is a critical mechanical component that serves as the central rotating shaft in wheel assemblies, designed to transmit torque from the drivetrain to the wheels while supporting the vehicle's weight and handling dynamic loads from acceleration, braking, and cornering. In automotive applications, axles are integral to the suspension and drivetrain systems, ensuring proper wheel alignment, power distribution, and structural integrity under various operating conditions.
Working Principle
The axle operates on the principle of rotational mechanics, where torque applied to the shaft causes the attached wheels to rotate, enabling vehicle motion. It functions as a load-bearing member, transferring vertical loads from the vehicle chassis to the wheels and reacting to lateral and longitudinal forces during driving maneuvers. In driven axles, it transmits power from the differential to the wheels, while in non-driven axles, it primarily provides structural support and wheel mounting.
Materials
Typically made from high-strength alloy steels such as AISI 4140 or 4340, often heat-treated (quenched and tempered) to achieve tensile strengths of 850-1000 MPa. For lightweight applications, aluminum alloys (e.g., 6061-T6) or composite materials may be used. Surface treatments include induction hardening, shot peening, or chrome plating for wear resistance.
Technical Parameters
  • Length 800-1500 mm
  • Weight 15-50 kg
  • Diameter 30-100 mm
  • Spline Type Involute splines (e.g., 10-32 teeth)
  • Load Capacity 2000-5000 kg per axle
  • Torque Rating 500-3000 Nm
  • Bearing Surfaces Ground to Ra 0.4-0.8 μm
Standards
ISO 286-2, DIN 5480, SAE J498, ISO 1101

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Axle.

automotive axle wheel assembly component drive shaft axle specifications vehicle chassis torque transmission load-bearing shaft axle materials ISO standards Axle Axle in Motor Vehicle Manufacturing

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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Wheelset

A rotating assembly consisting of two wheels fixed to an axle, forming the rolling interface between a rail vehicle and the track.

View Product Details

Travel Bogie

A wheeled undercarriage assembly that enables horizontal movement of a ship loader along rails.

View Product Details

Engineering Analysis

Risks & Mitigation
  • Fatigue failure from cyclic loading
  • Bending or torsion overload
  • Spline wear leading to power loss
  • Corrosion in harsh environments
  • Improper alignment causing vibration
FMEA Triads
Trigger: Material defects or improper heat treatment
Failure: Crack propagation leading to fracture
Mitigation: Implement ultrasonic testing during manufacturing and regular non-destructive inspections
Trigger: Excessive torque or shock loads
Failure: Plastic deformation or twisting
Mitigation: Design with adequate safety factors and install torque limiters in drivetrain

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
±0.05 mm on critical diameters, straightness within 0.1 mm/m
Test Method
Dynamic fatigue testing per ISO 1143, torque testing per SAE J218, hardness verification per ASTM E18

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 difference between a live axle and a dead axle?

A live axle transmits power to the wheels and rotates with them, typically connected to the drivetrain. A dead axle does not rotate and only provides structural support, commonly found in trailer applications.

How often should axles be inspected for wear?

Axles should be inspected during regular maintenance intervals (every 20,000-30,000 km) for signs of bending, spline wear, corrosion, or fatigue cracks, especially in high-load applications.

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.

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Attachment Clips Axle Beam