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Small black square 40mm frame fan with visible blades and wire lead

TSUJ

TSUJ DB04028B12U 4028 double ball bearing case fan 12V 0.66A 40x40x28mm

SKU CH-7F7V-17AQF

40 mm double ball bearing case fan runs on 12 V and draws 0.66 A for 1U server chassis cooling

  • Features1pcs New 4028 double ball bearing fan DB04028B12U 1U server
  • Double ball bearing design extends operational lifespan
  • 40 x 40 x 28 mm form factor fits 1U server chassis
  • 12 V 0.66 A rating delivers consistent airflow
  • TSUJ manufacturing ensures reliable cooling performance

40 mm double ball bearing fan for 1U server chassis

This 12 V case fan uses a double ball bearing and measures 40 by 40 by 28 mm. It draws 0.66 A and is built for tight 1U server enclosures where reliable airflow matters. The compact frame fits standard 4028 mounting holes in rackmount chassis and industrial equipment. Buyers who need larger airflow or quieter operation at lower RPM should look elsewhere.

Simple two-wire installation with polarity care

Connect the red and black leads to a 12 V header or fan controller, observing correct polarity to avoid damage. The small frame leaves little room for cable routing in dense 1U trays, so secure wires before closing the chassis. No mounting screws are included, so reuse existing hardware or source M3 fasteners separately. Incorrect voltage or reversed polarity are the most common causes of early failure.

Highlights

  • Double ball bearing design extends operational lifespan
  • 40 x 40 x 28 mm form factor fits 1U server chassis
  • 12 V 0.66 A rating delivers consistent airflow
  • TSUJ manufacturing ensures reliable cooling performance

Specifications

BrandTSUJ
Part NumberKepler-C72J-OYS-0134
Features1pcs New 4028 double ball bearing fan DB04028B12U 1U server chassis fan 12V 0.66A 40*40*28mm

Questions about this item

How can I verify the TSUJ DB04028B12U fan is spinning correctly after installation?

Connect the fan to a 12 V header and confirm the blades rotate smoothly; the double ball bearing design should run without grinding or wobble at the rated 0.66 A draw.

What comes in the box with the TSUJ DB04028B12U and what must I purchase separately?

The package includes one 40×40×28 mm double ball bearing fan; mounting screws, fan filters or a PWM controller are not supplied and must be bought separately.

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