Be Quiet! BL040 Pure Wings 2 PWM Case Fan, 14cm, Rifle Bearing

Be Quiet! BL040 Pure Wings 2 PWM Case Fan, 14cm, Rifle Bearing

Outstanding Reliability And Silent Cooling


The Pure Wings 2 family fans are unique in their class, combining outstanding reliability, silent cooling, and a great price-for-performance ratio. It’s impressive how much quiet technology the German engineering team has crammed into these fans at this amazing price. They are the ultimate reason to put well-known be quiet! silent cooling in your PC if you haven’t already done so.


The Pure Wings 2 140mm PWM model is the largest fan we offer that combines all of the above essential features. It provides maximum cooling airflow and operating noise levels down to a silent 19.8dB(A). The increased air pressure makes the fans especially recommended for use in water cooling and air cooling setups.





Practically Silent Operation


  • Nine silence-optimized fan blades with high airflow capabilities reduce noise-generating turbulences while increasing air pressure
  • Very quiet operation even at maximum speed, with noise of 19.8dB(A)





Variable Speed Function


  • 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





Product conception, design and quality control in Germany


  • Perfect choice for home and office PCs, gaming and multimedia systems
  • Especially recommended for use in water cooling and CPU cooling builds
  • High-quality rifle bearing technology contributes to a very long lifespan of up to 80,000 hours
  • 3-years manufacturer’s warranty
  • Specification

    Product Description

    Be Quiet! BL040 Pure Wings 2 PWM Case Fan, 14cm, Rifle Bearing


    14cm Case Fan



    Fan Connector(s)



    Screw fixing




    0.16 kg

    Fan Dimensions

    140 x 140 x 25 mm

    Fan Controller


    Rotation Speed

    1000 RPM

    Fan Bearing

    Rifle Bearing

    Air Flow

    61.2cfm / 104m3/h (@ 12V)

    Noise level

    19.8 dB(A)


    Input: 0.44 W

    Additional Features

    See Overview

    Package Contents


    Package Type


    Package Weight

    0.1900 kg


    3 Years