An alumina ceramic housing provides high-voltage insulation,
thermal stability and precision interfaces for demanding EV charging connector assemblies.
ZHENGQIANG GROUP supports drawing-based custom engineering, prototyping and volume production
for 99% alumina components.

Why Use 99% Alumina for EV Connector Housings?

99% alumina (Al₂O₃) combines electrical insulation,
hardness, wear resistance and dimensional stability in one engineered component.
It is suitable for connector designs that require reliable separation of conductive elements,
stable geometry around precision features and resistance to repeated assembly or mating cycles.

For connector designs where conventional polymer insulation approaches its thermal or electrical
performance limits, alumina ceramic can provide stable electrical insulation and dimensional
performance under demanding operating conditions.

Why Advanced Ceramics?

Wear Resistance

Harder and Longer Lasting.

Ceramic materials offer high hardness and wear resistance for rotating,
sliding and repeated-contact components.

Applications:
Pump shafts, wear-resistant components, precision interfaces

Excellent Electrical Insulation

Safe Under High Voltage.

Alumina ceramic supports electrical isolation in demanding connector
and power-system architectures.

Applications:
EV charging systems, electronic water pumps, motor insulation parts

Thermal Management

Dissipate Heat Efficiently.

Alumina combines electrical insulation with useful thermal conductivity
for heat-transfer applications.

Applications:
Power electronics, EV water pumps, charging connectors

Corrosion & Chemical Resistance

Stable in Harsh Environments.

Ceramic components can provide stable performance in moisture
and chemically demanding environments.

Applications:
Water purification systems, coffee machine pumps, automotive cooling systems

Typical Applications

• DC fast-charging connector insulation components
• High-power EV charging connector housings and inserts
• High-voltage ceramic insulators and terminal isolation parts
• Precision ceramic interfaces for charging modules and power assemblies
• Custom EV charging ceramic components manufactured from customer drawings

99% Al₂O₃ Technical Specifications

The following confirmed data provides a practical starting point
for alumina ceramic housing material and drawing review.

Actual values and acceptance criteria depend on material grade,
geometry, test method and approved customer drawing.

Alumina Ceramic Housing Manufacturing Advantages

• High electrical insulation:
  Supports separation of conductive parts in high-voltage connector architectures.
• Thermal conductivity:
  Catalog-rated ≥20 W/(m·K), supporting heat transfer while maintaining electrical insulation.
• Wear-resistant interfaces:
  High ceramic hardness helps protect locating, mating and assembly features.
• Precision machining:
  Critical holes, slots, grooves, sealing faces and reference surfaces
  can be finished according to the approved drawing.
• Custom engineering support:
  Design-for-manufacturing review, prototyping and volume production
  are available for drawing-based parts.

Electrical Safety for High-Voltage Charging

An alumina ceramic housing is one part of the complete insulation system
and must be evaluated within the finished connector assembly.

Electrical insulation performance depends on more than the ceramic material alone.
Wall thickness, creepage and clearance distances, electrode geometry,
surface condition, contamination and the selected test method all influence
the final result.

Thermal and Dimensional Stability

Charging systems can experience changing thermal loads during operation.
Alumina retains stable geometry under conditions where insulation,
alignment and interface accuracy must work together.

Custom Manufacturing and Precision Tolerances

Each alumina ceramic housing is evaluated against the customer drawing
before the process route is approved.

±0.005 mm is a best-case precision-machining capability,
not a blanket tolerance for every dimension.

Achievable tolerances depend on feature size, geometry, wall thickness,
datum structure, material removal, inspection access and production volume.

From Prototype to Mass Production

Advanced ceramic processing and precision manufacturing capabilities.

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Company Introduction

Engineered Ceramic Solutions for Demanding Applications

We specialize in custom alumina and zirconia ceramic components
for automotive, energy and appliance industries.

Our team supports customers from drawing review and design-for-manufacturing
feedback through prototyping, precision manufacturing and volume production.

Industries We Serve

Certification

ISO 9001 Quality Management System

Invention Patent

IATF 16949:2016

Frequently Asked Questions

What tolerance can you achieve?

Precision machining can reach up to ±0.005 mm on selected critical features.
This is a best-case capability rather than a blanket tolerance.

Is 99% alumina suitable for EV charging connectors?

It can be suitable where electrical insulation,
thermal stability and precise geometry are required.

Can you manufacture directly from CAD files?

Yes. Customers can provide 2D drawings and STEP files
for engineering and manufacturability review.

Do you support prototypes?

Yes. Prototype evaluation can be completed before volume production.

Let’s Build Your Next Ceramic Solution

Advanced Ceramic Solutions for Reliable Performance

Engineering Support

Prototype

Precision Manufacturing

Mass Production

Send us your drawing, material requirement,
critical tolerances, prototype quantity and estimated annual demand.

Request a Factory-Direct Quote

Email Your Drawing

Model: BL6110-059A

Rated Voltage: 12V DC

Rated Power: 15W ±4W

Speed Range: 300-1100 RPM

Rated Speed: 1100 RPM

Rated Torque: 71 mN.m

Control Method: Hall sensor drive

Noise Level: ≤40 dB(A)

Load Current: <1.8A

No-load Current: <0.3A

Operating Temperature: 0°C to 40°C

Protection Class: 8

Frame Size: 61mm

Special Features

Hall sensor drive for precise speed control

Low noise operation for sensitive environments

Wide speed range for versatile applications

Compact design with reliable performance

Suitable for medical applications

Applications

Medical equipment and purifiers

Air circulation fans

Bathroom heaters

Fresh air systems

Bladeless fans

Residential ventilation

Model: BL4812-078A

Rated Voltage: 12V DC (10.8-13.2V range)

Rated Power: 12W

No-load Speed: 1800 RPM

Rated Torque: 26 mN.m

No-load Current: 0.5A

Peak Current: 2A

Phase Number: 3

Pole Number: 10

Rotation Direction: CW (Clockwise)

Frame Size: 47.7mm diameter

Length: 56.9mm

Weight: 0.286kg

Special Features

Ultra-compact design for space-constrained applications

High-speed operation up to 1800 RPM

Low noise performance

Clockwise rotation as standard

Lightweight construction for easy integration

Applications

Compact household fans

Smart home appliances

Stand fans and portable devices

Electronic cooling systems

Mini ventilation equipment

Model: BL6110-006C

Rated Voltage: 24V DC (22.8-25.2V range)

Rated Power: 33W

Speed Range: 200-2400 RPM

Rated Torque: 150 mN.m

Noise Level: ≤45 dB(A)

Load Current: 1.8A

No-load Current: <0.3A

Phase Number: 3

Pole Number: 10

Frame Size: 61.4mm diameter

Length: 63.6mm

Weight: 0.286kg

Special Features

Wide speed range for versatile applications

High torque output for demanding loads

Sensorless drive for reduced complexity

Compact design with high power density

Reliable performance in various environments

Applications

Air purifiers and cleaners

Industrial ventilation systems

Dehumidifiers

Solar powered equipment

Commercial fan applications

Model: BL5706-020C

Rated Voltage: 24V DC

Rated Power: 16W

Rated Speed: 1510 RPM

Rated Torque: 56 mN.m

Noise Level: ≤30 dB(A) – Ultra quiet operation

Efficiency Class: IE4

Protection Level: Waterproof

Continuous Current: 1.0A

Frame Size: 57mm

Weight: Approximately 0.286kg

Special Features

Ultra-low noise (30dB) for residential environments

Waterproof construction for enhanced durability

High efficiency (IE4 class) for energy savings

Compact design with flange mounting for easy integration

1-year warranty for peace of mind

Applications

Solar powered fans

Smart home appliances

Vertical fans

Residential ventilation systems

Quiet household appliances