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Small square 40mm axial fan with black frame and transparent blades

Fans

Fans 1608KL-05W-B50 40mm 24V 0.11A case fan

SKU CH-WKE9-BMAPN MPN 1608KL-05W-B50

A 40 mm axial fan delivers 9.5 CFM at 8500 RPM with 33 dBA noise on 24 V power

  • High airflow for tight spaces with 9.5 CFM output
  • Low 33 dBA noise keeps systems quiet
  • 8500 RPM speed delivers strong 69.4 Pa pressure
  • 24 V 0.11 A draw uses only 2.64 W power
  • Operates from -20 to 75 °C in harsh environments

Compact 40 mm 24 V axial fan

The NMB-MAT 1608KL-05W-B50 is a 40 mm square axial fan that runs on 24 V and draws 0.11 A for 2.64 W. It spins at 8500 RPM to deliver 9.5 CFM of airflow with 69.4 Pa of static pressure at 33 dBA. The unit is rated for ambient temperatures from -20 to 75 °C and weighs 25 g. It suits tight enclosures in industrial, medical or embedded systems that need reliable spot cooling.

Upgrade from slower or louder 40 mm fans

Replace an existing 40 mm fan when the current model cannot meet the 8500 RPM speed or 9.5 CFM airflow required by the chassis. The jump is worthwhile if the original fan runs hotter than the -20 to 75 °C range or produces more than 33 dBA of noise. Builders who need a different voltage, a larger frame or higher static pressure should look elsewhere because this model is fixed at 24 V and 40 mm dimensions.

Verify 24 V supply and 40 mm mounting holes

Confirm that the target device provides a 24 V DC rail capable of at least 0.11 A before ordering. Check that the mounting pattern matches the 40 mm square footprint and that the connector matches the existing header. Ensure the operating environment stays within the -20 to 75 °C ambient rating and that 33 dBA acoustic output is acceptable for the installation.

How it compares

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

Price $29.99
Pricier than about 74% of the 8,339 comparable items (median $19.99).

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Specifications

No published specifications for this item yet.

Questions about this item

What are the mounting hole dimensions for the 40 mm frame?

The fan body measures 40 by 40 by 20 mm and weighs 25 g, so it fits standard 40 mm fan mounts with matching hole spacing.

How do I connect the 24 V power leads correctly?

Supply 24 V DC at 0.11 A to the two-wire leads; observe polarity so the inverter-driven motor starts at 8500 RPM.

When should I plan to replace the bearings?

Rated for continuous operation from -20 to 75 °C, the fan typically runs until noise exceeds 33 dBA or airflow drops below 9.5 CFM.

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