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Black 120mm square AC cooling fan with ball bearing

OEM Industries

OEM Industries MU1225M-11N 120mm 100V AC CPU cooler

SKU CH-S0HH-A45G2 MPN MU1225M-11N

120 mm AC fan with ball bearing runs on 100 V power for server cooling

  • Fan size120 mm
  • Bearing designBall
  • Product colorBlack
  • Product typeFan only
  • 120 mm fan fits standard CPU cooler mounts
  • Ball bearing reduces wear for longer service life
  • 100 V AC input powers the fan directly from mains
  • No LED keeps the build dark for clean aesthetics
  • 25 mm thickness matches common 12025 form factor

120 mm 100 V AC cooling fan

This OEM Industries MU1225M-11N is a 120 mm square frame fan designed for 100 V AC mains supply. It suits technicians replacing a failed unit in industrial enclosures or legacy server chassis that require direct AC drive. The black frame and ball bearing construction target continuous-duty environments rather than consumer PC builds.

Ball bearing 100 V AC motor

The single specification that decides fit is the 100 V AC rating combined with ball bearing construction. Standard PC headers provide 12 V DC, so this unit cannot connect to a motherboard fan header or PWM controller. It requires a 100 V AC source and mounting holes matching the 12025 footprint.

12025 frame continuous airflow

The 120 mm by 25 mm frame delivers steady airflow for rack-mounted power supplies, UPS units or telecom shelves where 100 V AC is standard. It runs out when a builder needs PWM speed control, 12 V DC operation or a lower acoustic profile for desktop use.

How it compares

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

Price $114.99
Pricier than about 91% of the 1,559 comparable items (median $19.99).
Fan size 120 mm
Higher than about 80% of the 812 comparable items (median 80 mm).

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Specifications

Product
Model nameMU1225M-11N
Product colorBlack
Product typeFan only
Size & build
Fan size120 mm
Bearing designBall
More details
LED lightingNo

Questions about this item

What does the 120 mm size mean when I install this fan in my case?

The 120 mm dimension matches the standard mounting holes on most chassis and radiators, so it lines up with common 120 mm fan positions without adapters.

How does the 100 V AC rating limit where I can plug this fan in?

It requires a 100 V AC mains supply, so it cannot run from a motherboard header or a typical 12 V DC fan controller; a suitable AC power source is needed.

What physical space does the 25 mm thickness need for mounting?

The frame is 25 mm thick, so allow at least that much clearance behind the mounting surface for the motor body and wiring.

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