How do I know the fan is dying?

Listen for clicking or grinding noises, check if RPM is significantly lower than spec, or see if blades wobble or feel stiff when spun manually.

What should I do if the fan is too loud?

Check for loose screws causing vibration, remove dust buildup, lower RPM via software, or consider switching to hydraulic bearings.

Can I connect the fan to a power supply instead of the motherboard?

Yes, connecting to a PSU Molex runs the fan at 12V full speed, which is simple but noisier compared to motherboard speed control.

75X75X30mm High Speed DC Blower Fan Long Service Life for Continuous Operation

Name: 75X75X30mm High Speed DC Blower Fan Long Service Life for Continuous Operation
Brand: Fengxia Motor (Shanghai) Co., Ltd.
SKU: 2156926932

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

US$2.10

500-4,999 Pieces

US$0.90

5,000+ Pieces

Sample price:US$4.00/piece.Request sample

Product profile

Customization

Available

Material

Plastic-Iron-Copper-Magnet

Blade Material

PBT 94ulv

Model NO.

7530

Type

DC Blower Fan

Electric Current Type

Mounting

Free Standing

Certification

RoHS, ISO, CE

Insulation Resistance

10mωor Over with at DC250V Megger

Ielectric Withstand Voltage

AC500V1s

Ambient Temperature

-10℃~+70℃(Operating) -40℃~+70℃(Storage)

Expected Life

+40° ,30000 Hours

Transport Package

Paper Box

Specification

Customized

Trademark

FUNSHARE

Origin

China

Production Capacity

100000 Pieces/Year

Key features

Wide Voltage Tolerance: Operates effectively within a 5V to 13V voltage range.

High Durability Bearings: Double-ball bearings offer 5-10 years lifespan with 24/7 tolerance.

Multi-Scenario Application: Suitable for notebooks, UAVs, VR headsets, and industrial devices.

Full Customization: Supports customization from samples, designs, and full specifications.

Quality Certified: ISO9001, CE, RoHS, and FCC certified for safety and quality.

Ultra-Quiet Operation: Features compact design and low noise for office and daily use.

Fast Delivery: Standard lead time of one month for both peak and off-season.

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: ≤3.87h

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:How long will the fan last?

Sleeve bearings last ~2-3 years, hydraulic ~4-5 years, and double-ball bearings last 5-10 years with 24/7 tolerance.

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

3-pin uses DC voltage control for fixed speeds, while 4-pin uses PWM for auto speed control, offering quieter and more precise operation.

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

The motor has a wide tolerance range of 5V to 13V, though it might not start below approximately 7V.

Q:How can I make the fan quieter?

Use rubber grommets to reduce vibration, use a low-noise adapter to lower voltage, or adjust the BIOS fan curve to keep RPM low.

Q:Which direction should the fan face?

Follow the arrows on the frame: intake arrows point to front/side for cool air, and exhaust arrows point to rear/top for hot air.

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