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Square black 40mm cooling fan with sleeve bearing, 10mm thick, two-wire lead

3D Maker World

3D Maker World 12V 40mm Sleeve Bearing Fan 3d printers accessory

SKU CH-SMJQ-MAX3N

A 12 V, 40 mm sleeve-bearing fan delivering 5.75 CFM at 24 dBA for targeted 3D printer cooling

  • Cools prints and electronics with 5.75 CFM airflow
  • Runs quietly at 24 dBA for low-noise operation
  • Fits tight spaces measuring 40 x 40 x 10 mm
  • Standard 12 V DC power with 0.08 A draw
  • Mounts easily using 3.5 mm holes

12 V 40 mm Sleeve Bearing Cooling Fan

This 40 x 40 x 10 mm fan runs on 12 V DC and draws 0.08 A at 6000 RPM. It is designed for 3D printer owners who need targeted airflow for hot-ends, stepper motors or control boards. The sleeve bearing keeps the acoustic profile low while delivering 5.75 CFM of cooling capacity.

Sleeve Bearing and Mounting Pattern

The sleeve bearing reduces mechanical noise to 24 dBA for quieter operation during long prints. Four mounting holes with a 3.5 mm diameter match common 40 mm fan brackets, allowing direct replacement or addition without custom adapters. No extra wiring harnesses or controllers are included in the package.

12 V DC Power Interface Limits

The fan requires a steady 12 V DC source capable of supplying at least 0.08 A; voltage outside this rating will alter speed, airflow and noise levels. PWM or voltage-controlled headers must be compatible with a two-wire 12 V load, otherwise speed regulation will not function. Builders using 24 V printer electronics need a separate step-down converter or a 24 V rated alternative.

Highlights

  • Cools prints and electronics with 5.75 CFM airflow
  • Runs quietly at 24 dBA for low-noise operation
  • Fits tight spaces measuring 40 x 40 x 10 mm
  • Standard 12 V DC power with 0.08 A draw
  • Mounts easily using 3.5 mm holes

Specifications

No published specifications for this item yet.

Questions about this item

How often will the sleeve bearing in this 40 mm fan need replacement?

Sleeve bearings typically wear faster than ball bearings; expect service life to shorten under continuous 6000 RPM operation, so plan a spare fan for high-duty printers.

What limit appears first when this 12 V fan runs all day at 6000 RPM?

The 0.08 A draw and sleeve bearing friction create heat that can degrade lubricant before the 5.75 CFM airflow drops noticeably.

How loud and hot does this 40 mm fan get during 24-hour prints?

Rated at 24 dBA it stays quiet, but the sleeve bearing generates extra warmth at 6000 RPM, so monitor nearby stepper drivers for temperature rise.

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