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Square 40 mm cooling fan with black plastic frame and visible rotor blades

DBTLAP

DBTLAP 40x40x28mm 12V .73A Two Ball Bearing Cooling Fan

SKU CH-G581-WN1WW

A 40 x 40 x 28 mm DC fan running at 12 V and 0.73 A with two ball bearings for PC cases, servers or inverters

  • Accessory TypeCooler
  • Efficient 12 V DC operation with 0.73 A draw
  • Two ball bearing design for extended service life
  • Compact 40 × 40 × 28 mm footprint fits tight spaces
  • 100 % tested before dispatch for reliable performance
  • Suitable for PC case, server or inverter cooling

40×40×28 mm 12 V Two Ball Bearing Fan

This 40 mm square fan runs on 12 V DC and draws .73 A. It uses a two ball bearing design for reliable rotation in continuous-duty environments. The 28 mm thick frame fits standard 4028 mounting holes. Each unit is tested before dispatch.

Drop-in replacement for worn 4028 units

The fan matches the 40×40×28 mm footprint and 12 V .73 A electrical profile of many legacy server and inverter coolers. Swapping it restores original airflow without rewiring or bracket changes. The jump is worth it when the old bearing becomes noisy or stalls under load.

Suits technicians maintaining 12 V 4028 slots

Builders needing a tested 12 V two ball bearing fan for a 4028 cavity will find the spec sheet matches. Buyers who want a different voltage, a thinner frame, or a larger diameter should look elsewhere.

Highlights

  • Efficient 12 V DC operation with 0.73 A draw
  • Two ball bearing design for extended service life
  • Compact 40 × 40 × 28 mm footprint fits tight spaces
  • 100 % tested before dispatch for reliable performance
  • Suitable for PC case, server or inverter cooling

Specifications

Accessory TypeCooler

Questions about this item

Will the 40x40x28mm frame fit my laptop's existing fan cutout?

The fan measures 40 mm by 40 mm with a 28 mm thickness; compare those dimensions to the cutout and screw-hole spacing on your current cooler.

How do I connect the two-wire 12V .73A lead to the motherboard header?

Match the red wire to the 12 V pin and the black wire to ground on a standard 3- or 4-pin fan header; the third pin can remain unused.

When should I expect to replace the two ball bearing assembly?

Two ball bearings typically last several years of continuous use; plan a replacement once audible rumble or speed drop appears.

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