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Black 140mm PWM case fan with seven curved blades and rifle bearing

be quiet!

be quiet! Pure Wings 3 BL109 140mm PWM Case Fan 1800 RPM

SKU CH-1GMQ-N2GVP MPN BL109

A 140 mm PWM case fan with rifle bearing delivers 70-75 CFM airflow at 1800 RPM and 30.5 dBA noise, rated for 80,000 hours

  • TypeCase Fan
  • Fan Size140mm
  • Bearing TypeRifle
  • RPM1800 RPM
  • Air Flow70-75 CFM
  • Noise Level30.5 dBA at max RPM

Type 140mm high-speed

Le versioni barrate esistono, ma non sono disponibili qui.

Color Black

  • Black
  • White

Le versioni barrate esistono, ma non sono disponibili qui.

  • High airflow up to 75 CFM from 7 optimised blades
  • Quiet operation at 30.5 dBA maximum noise level
  • Precise speed control via 4-pin PWM connector
  • Long-life rifle bearing rated for 80000 hours
  • 140 mm frame designed to minimise air leaks on radiators

140mm PWM case fan for demanding cooling

The be quiet! Pure Wings 3 BL109 is a 140mm case fan built for desktop systems that need strong airflow. It spins up to 1800 RPM and delivers 70-75 CFM while keeping noise at 30.5 dBA at maximum speed. A 4-pin PWM connector allows precise speed control down to a very low minimum RPM for quiet idle operation.

Upgrade from stock or smaller fans

This fan replaces basic case fans or 120mm units when a build needs more air volume through a larger frame. The rifle bearing is rated for 80000 hours of life, making the step up worthwhile for systems that run continuously or push high thermal loads. The frame outlet is shaped to reduce leaks, which helps when the fan is mounted on a radiator.

High airflow headroom for radiators and dense meshes

The seven optimised blades push enough air to handle restrictive radiator fins or tight front-panel meshes without stalling. At full speed the fan moves 70-75 CFM, giving headroom for overclocked CPUs or multi-GPU setups. In wide-open cases with little restriction the extra pressure is less critical, so the benefit drops off.

Punti di forza

  • High airflow up to 75 CFM from 7 optimised blades
  • Quiet operation at 30.5 dBA maximum noise level
  • Precise speed control via 4-pin PWM connector
  • Long-life rifle bearing rated for 80000 hours
  • 140 mm frame designed to minimise air leaks on radiators

Caratteristiche tecniche

Brandbe quiet!
TypeCase Fan
Fan Size140mm
Bearing TypeRifle
RPM1800 RPM
Air Flow70-75 CFM
Noise Level30.5 dBA at max RPM
Power Connector4-pin PWM
ColorBlack
LEDNon-LED
Peso di spedizione0.23 kg
Dimensioni del pacco178 × 142 × 25 mm

Altre versioni di questo modello

altri 3 nella stessa gamma

Stessa famiglia, con memoria, dissipatore o frequenza diversi — confronti prima di decidere.

Domande su questo articolo

Will the 140mm frame with four screw holes fit my case or radiator mounts?

The 140mm square frame uses standard four-corner mounting holes spaced for 140mm fan positions on cases and radiators.

How do I connect the 4-pin PWM cable so the motherboard controls speed correctly?

Plug the 4-pin PWM connector into a motherboard CPU_FAN or SYS_FAN header; the fourth wire carries the PWM signal for automatic speed control.

When should I expect to replace the rifle bearing after 80,000 hours of running?

The rifle bearing is rated for 80,000 operating hours; replace the fan if noise rises or RPM drops noticeably after that period.

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