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Black 120mm square cooling fan with 38mm thickness and three-wire connector

OEM Industries

OEM Industries DATA1238B4U 120mm 2 Ball 24V 3 Wire CPU cooler

SKU CH-RD3V-EDCS3

A 120 mm dual-ball-bearing fan running at 24 V with a three-wire connector, 38 mm thick for inverter cooling

  • Fan size120 mm
  • Bearing design2 Ball
  • Power input connector3 Wires
  • Product colorBlack
  • Product typeFan only
  • 120 mm fan fits standard CPU cooler mounts
  • 38 mm thickness delivers high static pressure airflow
  • 24 V DC input suits industrial inverter power supplies
  • Dual ball bearing extends operating life over sleeve types
  • Three-wire connector provides tachometer signal for monitoring

120mm 24V Ball-Bearing Fan

The OEM Industries DATA1238B4U is a 120mm DC cooling fan designed for 24-volt systems. It uses a dual ball-bearing assembly and a three-wire power connector for speed monitoring. The frame measures 120 by 120 by 38 millimetres and draws 0.8 amps. No LED lighting is fitted.

Suits 24V Industrial Builds

This fan fits equipment that runs on a 24-volt DC supply and accepts a standard three-wire header. Builders working with 12-volt PC motherboards or four-wire PWM controllers cannot use it directly. Buyers needing variable speed control via PWM should look elsewhere.

Fan-Only Package

The unit ships as a bare fan without mounting brackets, screws or thermal compound. Installers must supply their own fixation hardware and any required wiring adapters. No software or driver bundle is included.

How it compares

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

Price $25.99
Pricier than about 72% 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 nameDATA1238B4U
Product colorBlack
Product typeFan only
Power
Power input connector3 Wires
Size & build
Fan size120 mm
Bearing design2 Ball
More details
LED lightingNo

Questions about this item

What power source must I already have to run the 24V 0.8A fan?

You need a 24V DC supply that can deliver at least 0.8A and a three-wire connector for power, ground and tachometer signal.

Will the 120mm 38mm thick frame fit in the same mounting holes as my existing 120mm fans?

Yes, the 120mm square footprint matches standard 120mm mounting patterns, but verify your chassis has 38mm clearance for the thicker frame.

How can I confirm the ball-bearing fan is spinning at the correct speed after installation?

Connect the third wire to a motherboard or fan controller header and monitor the reported RPM in BIOS or software to verify operation.

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