How can I tell if the fan is dying?

Listen for clicking or grinding sounds indicating bearing failure. Check RPM via software; significantly lower than spec signals issues. Also, check if blades spin freely without wobble or stiffness.

Is the fan too loud, what can I do?

Check mounting screws for looseness, remove dust buildup, lower RPM via software, or consider replacing the bearing type (e.g., switching from double-ball to sleeve or hydraulic for quieter operation).

How do I connect the fan to the motherboard or power supply?

Connect to a motherboard header for speed control (best with PWM). Connect to a PSU Molex for 12V full-speed operation. Use splitters if needed, ensuring current stays under 1A per header.

30307mm Square Motor Brushless Cooling Blower with Low Noise

Name: 30*30*7mm Square Motor Brushless Cooling Blower with Low Noise
Brand: Fengxia Motor (Shanghai) Co., Ltd.
SKU: 2130181592

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

30*30*7mm Square Motor Brushless Cooling Blower with Low Noise

US$1.50-2.20

1,000 Pieces

Sample price:US$2.20/piece.Request sample

Product profile

Customization

Available

Material

Aluminum Fan

Blade Material

PBT 94ulv

Model NO.

3007 DC Blower

Type

DC Blower Fan

Electric Current Type

Mounting

Free Standing

Certification

RoHS, ISO, CE

Transport Package

Paper Box

Specification

30*30*7mm

Origin

China

Production Capacity

100000 Pieces/Year

Key features

Low Noise Design: Optimized for quiet operation with options for sleeve or hydraulic bearings.

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

Durable Bearings: Available in sleeve, hydraulic, and double-ball types for varying lifespans.

Full Customization: Supports OEM/ODM services including customization from samples and designs.

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

Certified Quality: Products hold FCC, CE, and RoHS certifications for global compliance.

Flexible Connector Options: Supports both 3-pin DC control and 4-pin PWM for precise speed adjustment.

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

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: ≤3.20h

AI-Powered supplier vetting

SummaryThe supplier demonstrates strong customization, R&D, OEM/ODM, quality-control, and complaint-handling capabilities. It reports new products within the past year, provides customization from samples and designs through full customization, and serves known brands through OEM. Production includes two lines, inventory capability, defined inspection procedures, and four QA/QC inspectors. However, important operational limitations exist: no available SDK, no overseas agents, branches, warehouse, or showroom, no offline trade-show participation, and only one experienced export-trade employee. Manufacturing controls also show gaps, including no ongoing quantity reconciliation for each batch and no standard operating procedure for outsourced manufacturing. Financial evidence is represented only by years rather than substantive indicators, so credibility cannot be determined. The supplier holds an ISO9001:2015 certificate, but the available information does not establish broader certification coverage.

Supplier typeThe supplier operates as a manufacturer with two production lines, provides OEM and ODM services, offers inventory capability, and accepts FOB and EXW quotations. It also provides full customization, but lacks overseas agents, branches, warehouses, and showrooms.

CertificationsThe supplier reports an ISO9001:2015 certificate. No additional specific certifications are identified in the provided information.

After-Sales capabilityThe supplier has documented and followed procedures for customer complaints and corrective/preventive actions, supporting an established service-response process. However, it has no overseas agents, branches, warehouse, or showroom, which limits demonstrated overseas service infrastructure.

R&D capabilityThe supplier reports new products in the past year, provides ODM services, and assigns R&D personnel to product development, design drawings, production support, and specifications. Nevertheless, it has no available SDK and no design input, output, review, validation, or confirmation documents available for audit.

Production capacityProduction evidence includes two production lines, inventory capability, one-month average lead times in both peak and off-season periods, four QA/QC inspectors, written finished-product inspection instructions, and multiple listed production machines. Controls are weakened by the absence of ongoing batch quantity reconciliation and a standard operating procedure for outsourced manufacturing.

Customization capabilityThe supplier explicitly supports customization from samples, customization from designs, and full customization, with the same capability reported under both R&D and design services. This directly demonstrates broad customization coverage.

Product Q&A

Q:What causes fan noise and how to reduce it?

Noise can result from loose mounting screws, dust buildup, or bearing type. Reduce noise by tightening screws, cleaning dust, lowering RPM via BIOS, or using rubber grommets instead of metal screws.

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 motherboard auto-adjustment, offering quieter and more precise speed control. A 4-pin fan on a 3-pin header runs at full speed or DC mode.

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

Sleeve bearings last ~2-3 years. Hydraulic bearings last ~4-5 years. Double-ball bearings last 5-10 years and are suitable for 24/7 performance.

Q:Which direction should the fan face for intake or exhaust?

Check arrows on the frame: arrows pointing out indicate exhaust, arrows pointing in indicate intake. Generally, front/side fans are for intake, and rear/top fans are for exhaust.

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

Most motors have a wide voltage tolerance, running from 5V to 13V. However, they may not start below approximately 7V.