Does having more blades mean better performance?

More blades increase static pressure (good for radiators) but are slightly louder. Fewer blades provide higher airflow (good for ventilation) with lower noise. A balance of 7-9 blades is typical.

How do I know if the fan is dying?

Listen for clicking or grinding sounds indicating bearing failure. Check RPM via software; significantly lower than spec is a red flag. Power off and flick the blade; wobble or stiffness indicates worn bearings.

505015mm Speed Control Brushless Cooling Centrifugal DC Blower

Name: 50*50*15mm Speed Control Brushless Cooling Centrifugal DC Blower
Brand: Fengxia Motor (Shanghai) Co., Ltd.
SKU: 2236400715

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

50*50*15mm Speed Control Brushless Cooling Centrifugal DC Blower

US$1.90-2.00

1,000 Pieces

Sample price:US$2.50/piece.Request sample

Product profile

Customization

Available

Material

Aluminum Fan

Electric Current Type

Model NO.

5015 (Small-Bore) DC Blower

Mounting

Free Standing

Certification

RoHS, ISO, CE

Transport Package

Paper Box

Specification

50*50*15mm

Origin

China

Production Capacity

100000 Pieces/Year

Key features

Customization Options: Supports full customization from samples, designs, or specific customer requirements.

Wide Voltage Tolerance: Operates effectively within a 5V to 13V range for versatile power compatibility.

Multiple Bearing Types: Available in sleeve, hydraulic, and double-ball bearings for varied lifespan and noise needs.

Certified Quality: Products hold RoHS, ISO, CE, and FCC certifications ensuring international standards.

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

Durable Construction: Aluminum fan material ensures long-term stable and durable product quality.

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

Global Application: Suitable for drones, automotive, medical, and industrial control equipment.

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: ≤2.90h

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 fix it?

Noise can be caused by loose screws (vibration), dust buildup (air resistance), or bearing type. Fix by tightening screws, cleaning dust, lowering RPM, or choosing hydraulic bearings for a balance of quiet and durability.

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, quieter, and more precise speed variation controlled by the motherboard. 4-pin plugs into 3-pin headers but runs at full speed or DC only.

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 tolerant of 24/7 operation.

Q:How can I make the fan quieter?

Use rubber pegs or grommets to reduce vibration. Use an inline resistor or low-noise adapter to drop voltage. Adjust BIOS curves to keep RPM low until temperatures rise.

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

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