140mm PWM

Outstanding price-performance ratio

Pure Wings 2 140mm PWM fans bring famous be quiet! silent cooling to entry level computing, yet are also appropriate for gaming and multimedia systems.

  • 9 airflow-optimized fan blades reduce noise-generating turbulence
  • Long life rifle-bearing gives an operating lifetime of 80,000 hours
  • Even at maximum speed, operates at only 19.8 dB(A)
  • PWM controlled fan speed through the motherboard
  • German product conception, design and quality control
  • 3-years manufacturer’s warranty

Pure Wings 2 140mm PWM fans offer outstanding reliability and quiet operation at great price-for-performance ratio. They are the ultimate reason to put well-known be quiet! silent cooling in your PC.

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Achieves a great price-for-performance ratio

The Pure Wings 2 140mm PWM fan operates at only 19.8dB(A) even at maximum speed. The perfect choice for silent home and office PCs as well as gaming and multimedia systems. 


For even better cooling

Thanks to its surface-optimized fan blades the airflow is enhanced, noise-generating turbulences are minimized and the air pressure is increased. This feature is the key to effective cooling. 


Varies the fan speed and noise level of the fan

Pulse Width Modulation (PWM) allows compatible 4-pin controllers - including those built into many motherboards - to intelligently vary the speed and thus the noise level of the fan. With PWM your system can ramp up the cooling when it’s needed, or operate in maximum quiet mode when it’s not. This feature especially recommends the fan for heat sinks and radiators. 


Gives the fan a very long lifespan

The Pure Wings 2 140mm PWM is the hallmark of outstanding reliability. This is achieved by its high-quality rifle bearing technology, which assures a very long lifespan of up to 80,000 hours. 

“It must be next to impossible to find another fan at this segment with such high performance and yet the quiet operation Pure Wings 2 offers.” 

Marvin Jindra, Director of Marketing & Partnerships

All models at a glance:

Product Series

General data

ModelPure Wings 2 140mm PWM
Dimensions (mm)140
Color optionBlack
Fan speed at 100% PWM / 12V (rpm)1000
Noise level at 100% PWM / 12V (dB(A))19.8
Airflow at 100% PWM / 12V (CFM / m3/h)61.2 / 104
Air Pressure at 100% PWM / 12V (mm H2O)0.76


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Mechanical specifications

Dimensions (L x W x H), (mm)140 x 140 x 25
Weight incl. fixed cables (g)158
Bearing technologyRifle
Motor technology4-pole fan motor
Push pin fixing-
Screw fixing

Cables / Connectors

Daisy-chain compatible-
Lighting connector-
Connector4-pin PWM
Cable length (mm)460
Cable sleeve-

Performance / Noise

Airflow at 100% PWM / 12V (CFM / m3/h)61.2 / 104
Air Pressure at 100% PWM / 12V (mm H2O)0.76
Noise level at 100% PWM / 12V (dB(A))19.8
Lifespan (h / 25°C)80,000
Zero RPM mode-

Electrical specifications

Rated Voltage DC (V)12
Operating Voltage DC (V)5 - 12
Current consumption (A)0.09
Safety current (A)0.3
Input power (W)3.6
Rated Current LED (A)-


3-pin to 4-pin 12V-connector-
12V to 7V adapter-
12V to 5V adapter-
Push pins-
hard plastic washer-

Safety certification

ApprovalsCE / TÜV / UL

Environmental directives



Warranty (Years)3
International hotline / free of charge✓ / DE, FR

Logistics data and RRP

Article numberBL040
EAN code4260052184417
Dimensions, package (L x W x H), (mm)175 x 140 x 28
Gross weight, package (kg)0.188
Pieces per packaging unit72
Dimensions, shipping box (L x W x H), (mm)460 x 380 x 340
Gross weight, shipping box (kg)15
RRP (€)14.50

PURE WINGS 2 | 140mm PWM
Article number: BL040