DC Centrifugal Fan Manufacturers

DC Centrifugal Fan range and positioning

In a DC centrifugal fan, air enters along the motor axis and is discharged radially, which produces higher static pressure than an axial fan of similar size. That makes the range suitable for systems with filters, heat sinks, sealed enclosures or long duct paths. The static-pressure capability is particularly valuable in telecom cabinets, medical instruments, power electronics, new energy storage and refrigeration equipment where the thermal design depends on overcoming internal resistance.

• Compact blower solutions for limited-space chassis requiring high backpressure
• Energy-saving BLDC operation for continuous duty and solar or battery-powered systems
• Speed regulation through PWM and 0-10 V control for dynamic thermal management
• FG signal output so the host controller can monitor actual rotation

Our DC range complements the wider Centrifugal Fan family. For AC mains installations that still need the efficiency of a brushless DC motor, we also offer EC Centrifugal Fan units with an integrated AC-to-DC conversion stage.

DC centrifugal fan range at a glance

The current DC range covers four application-focused variants. Each one starts from the same BLDC motor philosophy but is balanced for a different set of operating conditions.

Configuration approach and engineering considerations

We treat each DC centrifugal fan as a configuration task rather than a catalog item. The starting points are the required working point, the available DC bus voltage and the space inside the equipment. From those inputs we balance blade geometry, motor winding, speed range and inlet/outlet arrangement.

• Voltage and winding: The current low-voltage range covers 24 V and 48 V systems. We match the motor winding to the customer's DC bus and the speed range required.
• Motor core: The fan is based on our own brushless DC motor platform. We also produce BLDC Motor products separately, which allows us to control the electromagnetic design and the fan assembly together.
• Control interface: Standard interfaces are PWM speed regulation and 0-10 V analog control, with FG output for rotation monitoring.
• Protection: The high-airflow exhaust variant includes 100% copper winding, over-voltage protection and reverse-polarity protection for demanding field installations.
• Mechanical integration: Fan size, mounting flange, connector location and lead length are adjusted to fit the customer's enclosure and assembly process.

Controls and automation integration

Because these fans use BLDC motors, they respond quickly to speed commands and accept electronic control signals without phase-control hardware. This is the main reason OEMs choose the DC format for systems that already contain a microcontroller or PLC.

• PWM speed regulation for simple duty-cycle control from a host MCU
• 0-10 V analog control for industrial controllers and building-management interfaces
• FG output for rotation feedback, enabling the host to detect abnormal operation
• Low-voltage operation compatible with battery systems, solar PV inputs and DC bus architectures

Quality approach and acceptance testing

Quality control follows the product from raw materials to final assembly. Our manufacturing bases in Hangzhou and Huzhou include wind tunnel, noise, motor performance and aging laboratories, and the company holds patents related to fan structure, fluid, motors and control circuits. The quality system is certified to ISO9001:2015, and the product range carries CCC and CE certification, with RoHS and UL test evidence available. Certification evidence also includes IP55 rating tests.

For project orders we can coordinate performance verification and factory acceptance testing, including inspection of appearance, nameplates, assembly, accessories and packaging. Third-party inspection can also be arranged. We document the results and review them with you before shipment.

Project support from engineering to field service

At the quoting stage, we analyse operating conditions and provide selection support. Once the order is placed, we coordinate production schedules, monitor progress and conduct pre-shipment inspection. The goal is to keep fan performance, electrical interface and documentation aligned with the system design.

• Engineering and selection support based on load characteristics and duty cycles
• Technical documentation, drawings and project data for integration into your system
• Export packaging and international logistics under agreed trade terms, including DAP or DDP where required
• Installation instructions, operation guidance and online technical support after delivery
• Spare parts and warranty service, with a 12-month warranty on all products

Frequently asked questions

What are the advantages of your DC centrifugal fans compared with an AC centrifugal fan?

DC centrifugal fans operate from a low-voltage DC bus and accept PWM or 0-10 V speed commands, so the host system can modulate airflow based on temperature or load rather than relying on fixed-speed AC. Because they use BLDC motors, they avoid brush wear and provide high static pressure in compact packages. For installations with AC mains, our EC Centrifugal Fan range combines an AC input with a brushless DC motor.

Which voltages and control signals do you support?

The current DC range includes low-voltage 24 V and 48 V models. Control options include PWM speed regulation, 0-10 V analog regulation, and FG signal output for rotation monitoring. We tailor the control wiring and connector arrangement to the mating controller.

Can you customize the fan for our application?

Yes. OEM and ODM are core services. Send the airflow and static pressure requirements, electrical system, available dimensions, noise limit and target certifications. Our engineering team evaluates your specifications, drawings or sample and provides a solution and quotation.

How do you confirm fan performance and quality before shipment?

Quality control starts with raw materials and continues through final assembly. The factory is ISO9001 certified, products carry CE and CCC, and RoHS and UL test evidence is available. We can coordinate performance verification and factory acceptance tests, and third-party inspection is supported.

What are your MOQ and lead time?

For standard products, MOQ is typically 100 pieces; customized products depend on process complexity. Standard samples ship within 3-5 days, regular orders normally take 25-30 days, and the exact delivery time is confirmed before order placement. Sample fees can be deducted from the formal order amount.

Do you provide installation and after-sales support?

Yes. We provide technical documentation, installation videos and online guidance. For larger orders we can arrange engineer visits on agreed terms. We also support spare parts and warranty service, and all products include a 12-month warranty.