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Black 40mm square micro fan with ball bearing and two wires

OEM Industries

OEM Industries MF40L-12L 40mm Ball Bearing Fan

SKU CH-1RG2-3BCJ6

A 40 mm ball-bearing micro fan running at 12 V and 0.04 A for compact cooling in switches or routers

  • Fan size40 mm
  • Bearing designBall
  • Product colorBlack
  • Product typeFan only
  • Compact 40 mm frame fits tight chassis spaces
  • Ball-bearing design extends operating life
  • 12 V 0.04 A draw keeps power use low
  • Two-wire connection simplifies installation
  • Suits switches, routers and small-form-factor coolers

Compact 40 mm ball-bearing fan

The OEM Industries MF40L-12L is a 40 mm square micro fan designed for tight spaces inside networking gear or small-form-factor systems. It runs on 12 V and draws 0.04 A through a two-wire lead, making it a direct replacement for legacy switch and router coolers.

Two-wire 12 V power interface

The bundled two-wire connector supplies power only, so speed reporting or PWM control is not available. Ball-bearing construction reduces friction compared with sleeve alternatives, helping the fan maintain consistent airflow in continuous-duty applications such as network switches.

Suits maintainers refreshing 40 mm bays

Technicians servicing compact switches, routers or industrial enclosures that accept a 40×10 mm frame will find this a drop-in fit. Builders needing temperature monitoring, variable speed headers or larger frame sizes should look elsewhere.

How it compares

Measured against everything we stock in CPU Coolers & Heatsink Fans, at today’s prices. Recalculated every night.

Price $18.99
Cheaper than about 55% of the 1,559 comparable items (median $19.99).
Fan size 40 mm
Lower than about 90% of the 812 comparable items (median 80 mm).

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Specifications

Product
Model nameMF40L-12L
Product colorBlack
Product typeFan only
Size & build
Fan size40 mm
Bearing designBall

Questions about this item

How often will the ball bearing in this 40mm fan need replacement?

Ball bearings typically last longer than sleeve types and rarely require scheduled replacement under normal continuous operation.

What limits continuous running of this 12V 0.04A micro fan first?

The 12V 0.04A rating sets the electrical limit; sustained use stays within this draw unless voltage or airflow is restricted.

How much noise and heat does this 40mm ball bearing fan produce all day?

Ball bearing fans run quietly at low RPM; the 2-wire 12V design generates minimal heat during extended operation.

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