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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 size140 mm
  • Number of fans1 Fan
  • Bearing designRifle
  • Rotational speed1,200 RPM
  • Airflow rate55-60 CFM
  • Operating noise21.9 dBA at max RPM

Type 140mm PWM

Color Black

  • 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.

How it compares

Measured against everything we stock in PC Cooling Fans, at today’s prices. Recalculated every night.

Price $9.99
Cheaper than about 91% of the 8,339 comparable items (median $19.99).
Fan size 140 mm
Higher than about 80% of the 1,114 comparable items (median 120 mm).

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Specifications

Product
Brand namebe quiet!
Product typeCase Fan
Product colorBlack
Performance
Rotational speed1,200 RPM
Airflow rate55-60 CFM
Power
Power input connector4-pin PWM
Size & build
Fan size140 mm
Number of fans1 Fan
Bearing designRifle
Shipping weight0.21 kg
Package size152 × 127 × 25 mm
Environment & compliance
Operating noise21.9 dBA at max RPM
More details
LED lightingNon-LED

Other versions of this model

3 more in the same range

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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