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Black 140mm case fan with seven curved blades and square frame

be quiet!

be quiet! Pure Wings 3 BL108 140mm PWM case fan

SKU CH-RN95-9KKJP MPN BL108

140 mm PWM case fan with 7 optimised blades, rifle bearing, 55-60 CFM airflow and 21.9 dBA noise

  • Fan Counts1 Fan
  • TypeCase Fan
  • Fan Size140mm
  • Bearing TypeRifle
  • RPM1200 RPM
  • Air Flow55-60 CFM

Type 140mm PWM

Struck-through versions exist but are not stocked here.

Color Black

  • Black
  • White

Struck-through versions exist but are not stocked here.

  • Quiet operation at 21.9 dBA maximum noise
  • 1200 RPM top speed with low minimum RPM
  • 55-60 CFM airflow from 7 optimised blades
  • Rifle bearing rated for 80000 hours life
  • 140mm PWM fan fits standard case mounts

Product Identity

The be quiet! Pure Wings 3 BL108 is a 140mm PWM case fan built for desktop PCs that need strong airflow with low acoustic output. Its 7 optimised blades and rifle bearing target users who want effective cooling without added lighting or noise.

Installation Notes

The fan uses a standard 4-pin PWM connector that plugs directly into any compatible motherboard header. No special tools are required, but builders must ensure the case has 140mm mounting points; the 1200 RPM top speed means cable routing should avoid blade contact.

Capacity and Limits

Airflow reaches 55 to 60 CFM at a maximum noise level of 21.9 dBA, which suits typical mid-tower builds and radiator setups. The rifle bearing is rated for 80,000 operating hours. Systems demanding higher static pressure or significantly greater airflow will exceed this model's comfortable range.

Highlights

  • Quiet operation at 21.9 dBA maximum noise
  • 1200 RPM top speed with low minimum RPM
  • 55-60 CFM airflow from 7 optimised blades
  • Rifle bearing rated for 80000 hours life
  • 140mm PWM fan fits standard case mounts

Specifications

Brandbe quiet!
Fan Counts1 Fan
TypeCase Fan
Fan Size140mm
Bearing TypeRifle
RPM1200 RPM
Air Flow55-60 CFM
Noise Level21.9 dBA at max RPM
Power Connector4-pin PWM
ColorBlack
LEDNon-LED
Shipping weight0.21 kg
Package size152 × 127 × 25 mm

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Questions about this item

How do I confirm the Pure Wings 3 BL108 is running correctly after installation?

Connect the 4-pin PWM header to the motherboard. In the BIOS or fan-control software set a curve; the fan should spin up to 1200 RPM at full duty and drop to a low minimum RPM at idle. Listen for a smooth 21.9 dBA hum at maximum speed with no rattling or clicking from the rifle bearing.

What ships with the BL108 140mm fan and what must I provide?

The retail box contains one 140mm Pure Wings 3 fan with a 4-pin PWM cable attached and a set of mounting screws. You only need a free 4-pin PWM header on the motherboard or a compatible fan hub; no extra cables or adapters are required.

Which capacity or version of the Pure Wings 3 140mm should I choose?

This MPN BL108 is the single 140mm PWM model delivering 55 to 60 CFM at 1200 RPM with a 21.9 dBA noise rating and an 80000-hour rifle-bearing life. Choose it when you need one high-airflow 140mm fan for case or radiator use; multi-pack versions carry different MPNs.

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