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Small black square 40mm fan with ball bearing, two wires

OEM Industries

OEM Industries AD0424HB-B31 40x28mm 24V 0.12A Fan

SKU CH-66QQ-A71B3

A 40 mm square ball-bearing case fan running at 24 V and 0.12 A for server or inverter cooling

  • ColorBlack
  • TypeFan only
  • Fan Size40mm
  • Bearing TypeBall
  • LEDNo
  • Compact 40 mm frame fits tight server chassis
  • Ball bearing ensures long-life operation in continuous duty
  • 24 V 0.12 A draw keeps power budget low
  • Two-wire design simplifies wiring in inverter units
  • Black finish matches standard rack aesthetics

Compact 40mm Server Fan

The OEM Industries AD0424HB-B31 is a 40 by 28 millimetre axial fan designed for tight server and inverter enclosures. It runs on a 24 volt supply drawing 0.12 amperes through a two wire lead. Ball bearing construction targets continuous duty cycles in industrial environments. The black frame blends into standard rack hardware.

Two Wire 24V Integration

The unit needs a 24 volt DC header or external supply capable of delivering 0.12 amperes. Its two wire interface provides power only, so speed monitoring or PWM control must be handled elsewhere in the system. The 40 millimetre square footprint fits legacy 4028 mount patterns without adapters. No LED lighting means no stray illumination in dark server rooms.

Ball Bearing Sustained Operation

Ball bearings maintain consistent rotational stability during extended 24 volt operation. The simple two wire design eliminates signal wire fatigue in high vibration chassis. Steady airflow is preserved as long as the supply voltage remains stable. Builders needing temperature controlled speed curves or tachometer feedback should select a three or four wire alternative.

Points forts

  • Compact 40 mm frame fits tight server chassis
  • Ball bearing ensures long-life operation in continuous duty
  • 24 V 0.12 A draw keeps power budget low
  • Two-wire design simplifies wiring in inverter units
  • Black finish matches standard rack aesthetics

Caractéristiques

ModelAD0424HB-B31
ColorBlack
TypeFan only
Fan Size40mm
Bearing TypeBall
LEDNo

Questions sur cet article

How long does the ball bearing in the AD0424HB-B31 last under continuous 24V operation?

The ball bearing is rated for extended continuous duty at 24V 0.12A, making it suitable for 24/7 server and inverter cooling where sleeve bearings would wear out faster.

What noise and heat output should I expect when this 40mm fan runs all day in a server chassis?

At 24V the fan draws only 0.12A, so waste heat is minimal and the ball bearing runs quietly enough for rack-mounted equipment without adding noticeable chassis noise.

Does the AD0424HB-B31 come with a mounting bracket or connector adapter for a standard 3-pin motherboard header?

No, the unit is supplied as the bare 40x28mm motor with two wires only; you must already have a 24V DC source and a way to secure the 40mm frame in your chassis.

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