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Two small 40mm square fans with a two-tone finish and a metal bracket

OEM Industries

OEM Industries NIDEC 4028 W40S12BS4A5-07 40mm 4-Pin 12V .73A Ball Bearing CPU Cooler

SKU CH-5EWG-SHTBQ

Two 40 mm ball-bearing fans run at 12 V and 0.73 A each with 4-pin PWM control and a metal mounting bracket

  • Color2-Tone
  • TypeFan only
  • Fan Size40mm
  • Bearing TypeBall
  • Power Connector4 Pin
  • LEDNo
  • Twin-fan design doubles airflow for compact CPU cooling
  • NIDEC 4028 motor delivers reliable 12 V operation at .73 A
  • 40 mm ball-bearing fans reduce friction for longer service life
  • 4-pin PWM connector enables precise speed control via motherboard
  • Included metal bracket secures both fans for stable mounting

Dual 40mm CPU Cooler

This package contains two NIDEC 4028 fans built on the W40S12BS4A5-07 platform. Each unit measures 40mm and uses a ball bearing for durability. The coolers are aimed at compact systems that need targeted processor cooling in tight spaces.

4-Pin 12V Integration

Each fan draws 0.73A from a standard 4-pin header and ships with a metal mounting bracket. The 4-wire connection allows the motherboard to regulate speed automatically. No LED lighting is present, keeping the installation clean for non-windowed chassis.

Sustained Ball-Bearing Operation

Ball bearings maintain consistent rotation during extended workloads without the friction increase seen in sleeve designs. The 12V 0.73A rating supports steady airflow over long periods. This makes the pair suitable for servers or workstations that run continuously.

Highlights

  • Twin-fan design doubles airflow for compact CPU cooling
  • NIDEC 4028 motor delivers reliable 12 V operation at .73 A
  • 40 mm ball-bearing fans reduce friction for longer service life
  • 4-pin PWM connector enables precise speed control via motherboard
  • Included metal bracket secures both fans for stable mounting

Specifications

ModelW40S12BS4A5-07
Color2-Tone
TypeFan only
Fan Size40mm
Bearing TypeBall
Power Connector4 Pin
LEDNo

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