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Black 120mm square case fan 25mm thick with four-pin PWM connector

SXDOOL

SXDOOL 120mm PWM Dual Ball Bearing Case Fan 4000 RPM 146.16 CFM Black

SKU CH-D2AN-K0PWR

A 120 mm PWM case fan with dual ball bearings spins up to 4000 RPM and pushes 146.16 CFM at 55.3 dBA

  • TypeCase Fan
  • Bearing Type2 Ball
  • RPM4000-4499 RPM
  • Air Flow>80 CFM
  • Noise Level> 50 dBA
  • Power Connector4 Pin
  • High airflow at 146.16 CFM for effective case cooling
  • PWM speed control from 1300 to 4000 RPM for flexible performance
  • Dual ball bearing rated for 500000 hours of operation
  • 4-pin connector enables precise motherboard fan management
  • Non-LED black design suits clean, minimalist builds

High-Airflow 120 mm PWM Fan

The SXDOOL 120 mm PWM case fan uses a dual ball bearing and a 4-pin connector to deliver up to 146.16 CFM at 4000 RPM. It targets builders who need maximum airflow through radiators or dense mesh panels and who accept higher noise for that throughput.

Thermals Noise and Power

At full speed the fan moves 146.16 CFM while producing 55.3 dBA and drawing 0.7 A at 12 V. PWM control lets the motor idle down to 1300 RPM below 48 % duty cycle, reducing noise and power when the system is not under heavy load.

Upgrade Path and Fit

This unit replaces lower-CFM 120 mm fans that cannot sustain pressure through thick heatsinks or restrictive filters. The jump is worthwhile when the existing cooler cannot exhaust heat fast enough; it is not suited for silent builds or situations where noise must stay below 50 dBA.

Highlights

  • High airflow at 146.16 CFM for effective case cooling
  • PWM speed control from 1300 to 4000 RPM for flexible performance
  • Dual ball bearing rated for 500000 hours of operation
  • 4-pin connector enables precise motherboard fan management
  • Non-LED black design suits clean, minimalist builds

Specifications

TypeCase Fan
Bearing Type2 Ball
RPM4000-4499 RPM
Air Flow>80 CFM
Noise Level> 50 dBA
Power Connector4 Pin
ColorBlack
LEDNon-LED

Questions about this item

How do I wire the 4-pin PWM connector so the fan actually responds to the 1300-4000 RPM curve?

Plug the 4-pin header into a motherboard PWM socket; the firmware then drives 0-48 % duty for 0 RPM and 49-100 % duty for 1300-4000 RPM.

When will the dual ball bearing need replacement under continuous operation?

The bearing is rated for 500000 hours of running time before wear becomes likely.

At what point does the 55.3 dBA noise ceiling become the limiting factor during sustained loads?

At full 4000 RPM the fan emits 55.3 dBA, so acoustic tolerance usually caps usable speed before thermal limits are reached.

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