What causes the fan to be too loud?

Noise can result from loose screws causing vibration, dust buildup increasing resistance, or the inherent noise level of the bearing type (e.g., double-ball is louder than sleeve).

Is OEM/ODM service available?

Yes, we offer full customization services including customization from samples, designs, and complete new specifications.

What are the minimum order quantity and lead time?

The Minimum Order Quantity is 30 sets. The average lead time is one month for both peak and off-peak seasons.

30304mm Speed Control Brushless Cooling Centrifugal DC Blower

Name: 30*30*4mm Speed Control Brushless Cooling Centrifugal DC Blower
Brand: Fengxia Motor (Shanghai) Co., Ltd.
SKU: 2243877805

Shanghai, ChinaFengxia Motor (Shanghai) Co., Ltd.

30*30*4mm Speed Control Brushless Cooling Centrifugal DC Blower

US$1.80-2.80

1 Piece

Sample price:US$2.50/piece.Request sample

Product profile

Customization

Available

Material

Aluminum Fan

Blade Material

PBT 94ulv

Model NO.

3004 DC Blower

Type

DC Blower Fan

Electric Current Type

Mounting

Free Standing

Certification

RoHS, ISO, CE

Transport Package

Paper Box

Specification

30*30*4mm

Origin

China

Production Capacity

100000 Pieces/Year

Key features

Wide Voltage Tolerance: Operates effectively within a 5V-13V range for flexible power integration.

Multiple Bearing Options: Choose Sleeve, Hydraulic, or Double-ball bearings for varied lifespan and noise needs.

OEM/ODM Customization: Full customization available from samples, designs, or complete new specifications.

Dual Control Interfaces: Supports 3-pin DC voltage control and 4-pin PWM for precise speed adjustment.

Multi-Industry Application: Suitable for automotive, medical, communication, and industrial control equipment.

International Certifications: Compliant with RoHS, CE, ISO, and FCC standards for global market access.

High-Quality Materials: Constructed with Aluminum Fan and PBT 94ulv Blade for durability and heat resistance.

100% Quality Inspection: Every unit undergoes visual and functional inspection before shipping.

Company profile

Importers and ExportersHigh Repeat Buyers Choice

Fengxia Motor (Shanghai) Co., Ltd.

Shanghai, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 5 Years CertifiedNearest Port: Shanghai PortAverage Response Time: ≤3.90h

AI-Powered supplier vetting

SummaryThe supplier provides extensive customization options and has a strong research and development capability, including ODM services and new product development. However, they lack overseas warehouse and showroom capabilities, and do not have overseas agents or participate in trade shows. Their financial data is up-to-date and they hold an ISO9001:2015 certification. Despite having quality assurance processes, the manufacturing capacity seems limited with only two production lines and no ongoing volume reconciliation or outsourcing SOPs.

CertificationsHolds an ISO9001:2015 certificate, indicating compliance with quality management standards.

After-Sales capabilityHas clear procedures and records for handling customer complaints and implementing corrective actions.

Financial creditFinancial data is current, with information available up to the last three years, demonstrating financial stability.

R&D capabilityStrong R&D capabilities with evidence of new product development, though lacking in audit documentation.

Production capacityLimited production capability with only two production lines, and lacks ongoing volume reconciliation and outsourcing SOPs.

Customization capabilityOffers full customization services from samples and designs, with a comprehensive design service capability.

Client casesProvides OEM services for well-known brands, suggesting a history of working with reputable companies.

Product Q&A

Q:What is the difference between 3-pin and 4-pin connectors?

3-pin uses DC voltage control for fixed or stepped speeds. 4-pin uses PWM for automatic, precise, and quieter speed variation controlled by the motherboard.

Q:How long does the fan last based on bearing type?

Sleeve bearing lasts ~2-3 years. Hydraulic bearing lasts ~4-5 years. Double-ball bearing lasts 5-10 years and tolerates 24/7 operation.

Q:Why does the fan spin at 5V if the label says 12V?

Most motors have a wide tolerance range of 5V-13V. However, they may not start spinning if the voltage drops below approximately 7V.

Q:How can I reduce fan noise?

Use rubber grommets instead of metal screws, install an inline resistor to lower voltage, or adjust the BIOS curve to keep RPM low until temperatures rise.

Q:Which direction should the fan face?

Follow the arrows on the frame. Generally, front/side fans are for intake (cool air in), and rear/top fans are for exhaust (hot air out).