Axial Fan BLOW 40×20 mm 24V sliding-bearing — compact 40mm PC/industrial cooling fan

Axial Fan BLOW 40×20 mm 24V sliding-bearing is a compact cooling fan designed for confined spaces in electronics and small PC installations. Its 40×20 mm frame and low-profile design permit installation in tight enclosures, control panels, power supplies and small chassis where airflow and heat dissipation are required. The fan operates from a 24V supply and uses a sliding (sleeve) bearing for a simple, space-efficient solution to improve ventilation and reduce component temperature.

Advantages

This compact BLOW fan delivers directed airflow in constrained assemblies while keeping overall dimensions minimal. The sliding-bearing construction provides a lightweight, low-cost design with reliable rotation for general-purpose ventilation. The 24V rating aligns with common industrial and embedded systems, enabling integration without additional voltage conversion when a 24V rail is available. The slim 20 mm thickness allows mounting in locations where standard-profile fans would not fit.

Suitable for

• Cooling small PC cases and mini ITX builds with limited depth
• Ventilation of electronic enclosures, control units and power supplies
• Airflow in compact industrial equipment and embedded devices
• Supplemental cooling for hard-to-reach components and local hotspots

Key specifications

• Frame size: 40 × 20 mm (outer dimensions)
• Operating voltage: 24 V DC
• Bearing type: sliding (sleeve) bearing
• Form factor: axial fan, low-profile design
• Typical applications: enclosure ventilation, PCB component cooling, small chassis airflow

How to use

Mount the fan in the intended airflow direction using appropriate fasteners for the 40 × 20 mm frame, ensuring secure attachment and proper clearance for the blades. Connect the fan to a stable 24V DC supply, observing correct polarity. Allow for sufficient intake and exhaust paths so the fan can move air effectively; avoid obstructing the inlet or outlet. Periodically inspect the sliding bearing fan for dust accumulation and replace the unit if noise or reduced rotation speed indicates wear.

Usage recommendations

Use the fan in installations where compact size and a 24V supply are available and acceptable running noise and maintenance intervals of a sleeve-bearing fan are suitable. For continuous high-duty or high-temperature applications consider fans with rolling-element bearings for extended lifespan; for intermittent or general ventilation tasks the BLOW 40×20 mm 24V sliding-bearing fan offers a simple and space-efficient cooling option.