E-Axle Housing Machining Case Study

The E-Axle housing is the core structural component of an integrated electric drive system.

Unlike conventional vehicles where the motor, gearbox and differential are separated, modern electric vehicles increasingly adopt integrated E-Axle systems that combine:

into a single compact assembly.

The E-Axle housing supports all these critical components while maintaining:

Because the housing contains multiple bearing bores, complex cavities, cooling passages and installation surfaces, CNC machining is one of the most critical manufacturing processes.

The customer is an electric drive system manufacturer supplying:

Their E-Axle housing integrates:

The customer encountered several production problems:

HYR CNC developed a dedicated machining solution to improve accuracy and production efficiency.

The electric drive industry is rapidly shifting toward:

Traditional designs:

Modern designs:

Advantages:

Modern EV motors often operate at:

Higher speed means:

Popular materials include:

because they offer:

A356-T6 is widely used in premium E-Axle housings.

Advantages:

Applications:

ADC12 is suitable for:

Advantages:

AlSi10Mg is becoming increasingly popular.

Advantages:

Applications:

Typical manufacturing process:

Among these processes, CNC machining determines the final drive accuracy and NVH performance.

E-Axle housings are among the most demanding aluminum components in EV manufacturing.

Casting alone cannot meet the required accuracy.

E-Axle housings contain:

Requirements:

Poor bore accuracy causes:

The gearbox chamber requires:

Poor machining causes:

Integrated cooling channels require:

Typical requirement:

Poor machining may result in coolant leakage.

An E-Axle housing often contains:

Challenges:

Typical requirement:

The housing integrates:

Challenges:

Machining strategies must be carefully optimized.

Typical wall thickness:

Thin walls tend to:

Stable machining requires:

HYR recommended the VMC1165 Vertical Machining Center.

Travel:

Suitable for:

Features:

Benefits:

Spindle:

Advantages:

24-tool ATC.

Supports:

Reducing setup time and improving productivity.

Machine:

Remove casting allowance.

Machine:

Prepare for finishing.

Machine:

Requirement:

Machine:

Achieve required flatness.

Machine:

Remove:

Improve assembly safety.

Inspect:

Guarantee machining quality.

Typical machining parameters:

Every E-Axle housing undergoes strict inspection.

Requirement:

Inspect:

Requirement:

Inspect:

Requirement:

Inspect:

Verify:

Ensuring complete dimensional accuracy.

After adopting HYR CNC machining solutions:

The customer achieved:

Suitable for:

Recommended for:

Ideal for:

What Is CNC Milling?

An E-Axle housing is the structural component that integrates the motor, gearbox and differential into a single electric drive unit.

A356-T6, ADC12 and AlSi10Mg are widely used due to their lightweight properties and excellent thermal performance.

Critical features such as bearing bores, gearbox interfaces and cooling channels require precision machining that cannot be achieved by casting alone.

Most E-Axle housings require bearing bore concentricity of 0.015 mm or better.

The HYR VMC1165 is an excellent solution for machining E-Axle housings and integrated electric drive components.

Integrated electric drive systems are becoming the mainstream architecture for modern electric vehicles, and E-Axle housings are among the most critical structural components.

From bearing bores and gearbox interfaces to cooling channels and sealing surfaces, every critical feature depends on high-precision CNC machining.

With excellent aluminum machining capability, high rigidity and stable machining accuracy, HYR CNC machining centers provide reliable and efficient solutions for E-Axle housing manufacturing.

HYR CNC continues to support global EV manufacturers with advanced machining technology and customized electric drive production solutions.