UMLIFE

UMLIFE 4PCS 3D Printer Cooling Fan 40mmx40mmx10mm Oil Bearing Blower Fan DC 12V Brushless Cooling Fan with 2 Pin Terminal for Hotend Extruder Heatsinks Makerbot MK7 MK8 CPU Chip (12V 0.08A)

Name: UMLIFE 4PCS 3D Printer Cooling Fan 40mmx40mmx10mm Oil Bearing Blower Fan DC 12V Brushless Cooling Fan with 2 Pin Terminal for Hotend Extruder
Brand: UMLIFE
SKU: B07JPBMNVL

Bottom line: The UMLIFE 4PCS 3D Printer Cooling Fan 40mmx40mmx10mm Oil Bearing Blower: Four fans per pack, so you keep spares on hand for hotend swaps; main trade-off: 12V only; 24V printers need a step-down converter or a 24V fan.

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By Mike Perry, Founder & Editor-in-Chief · Listing data updated 2026-10-06

Mike Perry — Hardware researcher since 2014. For retro PC hardware and period-correct parts, synthesises manufacturer documentation, community compatibility lists and marketplace listings rather than first-hand lab testing. Core beat: GPU performance across gaming, rendering, and local-LLM inference. About the author →

Pros & Cons

Pros

✓ Four fans per pack, so you keep spares on hand for hotend swaps
✓ Standard 40x40x10mm size fits MK7/MK8-style hotend heatsinks
✓ Rated 27dBA at 6000RPM for quiet hotend cooling
✓ Pre-fitted 2-pin PH2.5 connector on a 30cm (11.8in) lead
✓ Low 0.08A draw at DC 12V is easy on board fan headers

Cons

✗ 12V only; 24V printers need a step-down converter or a 24V fan
✗ Oil bearing rather than ball bearing; may wear faster in hot enclosures
✗ Some units may need the red and black wires swapped to spin
✗ 2-wire lead has no tach signal for RPM monitoring

Manufacturer description

The UMLIFE 40mm 3D printer cooling fan comes as a 4-pack of 12V brushless fans. Each one measures 40 x 40 x 10mm, the usual size for hotend heatsinks on MakerBot MK7 and MK8-style extruders. Each fan spins at 6000RPM, draws 0.08A at DC 12V and is rated at 27dBA. That gives you steady airflow across the heatsink without adding much noise to a long print. Installation is simple. Every fan comes with a 2-pin PH2.5 connector already fitted on a 30cm (11.8in) lead, so you have room to route the cable along the carriage to your control board. If a fan does not spin when you first power it on…

SpecPicks Verdict

SpecPicks scored UMLIFE 4PCS 3D Printer Cooling Fan 40mmx40mmx10mm Oil Bearing Blower… using a rating × review-volume × price-fit model applied to published specs and reviews across the retro cpu coolers & fans category. UMLIFE's retro cpu coolers & fans lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for retro cpu coolers & fans of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Frequently Asked Questions

Will this fan fit my MK8 hotend heatsink?

The fan measures 40 x 40 x 10mm and is listed for MakerBot MK7 and MK8-style hotend heatsinks. Confirm that your fan shroud or bracket takes a 40mm, 10mm-thick fan before installing.

Can I use this fan on a 24V 3D printer?

Not directly. It is rated for DC 12V at 0.08A. On a 24V board, use a 24V fan or add a step-down converter to supply 12V to the fan header.

What connector does it use and how long is the cable?

Each fan has a 2-pin PH2.5 connector already fitted on a 30cm (11.8in) cable, so it is ready to plug in out of the box.

My new fan does not spin. What should I do?

UMLIFE says that swapping the red and black wires in the plug fixes the problem. Also confirm that the header supplies 12V, not 24V or 5V.

How fast and how loud is this 40mm fan?

It is rated at 6000RPM with a noise level of 27dBA, and it uses an oil bearing with a brushless DC motor.

Key Features

☀☀ Power Connection: 2 Pin-ph2.5; Cable length is 30cm/11.8in. Connector is already fitted and product is out-of-the-box ready for installation.
☀☀ Great replacement item for your all metal hotend or maybe a small cooling fan for your 3D printer nozzle setup.
☀☀ Made of high quality plastics with high end bearings, this 3D printer part cooling fan can run continuously for days at high speeds without hassle or concern.
☀☀ Size:40mm*40mm*10mm(L*D*H), Speed:6000RPM, Noise:27dBA, Bearing: oil, DC 12V, 0.08A.
☀☀ Note: If you meet the fans did not work, you can swap the red and black wires in the plug got it to work. (Any questions, you can contact us and we will give you a satisfied solution!).

Full Specifications

Brand	UMLIFE
Model	4010-12V
Voltage	12 Volts
Material	Plastic
Noise Level	27 Decibels
Part Number	4010-12V
☀☀ Size	40mm40mm10mm(LDH), Speed:6000RPM, Noise:27dBA, Bearing: oil, DC 12V, 0.08A.
Material Type	Plastic
Cooling Method	Air
Number of Items	4
Air Flow Capacity	6.5 Cubic Feet Per Minute
Compatible Devices	Printer
Power Connector Type	2-Pin
☀☀ Power Connection	2 Pin-ph2.5; Cable length is 30cm/11.8in. Connector is already fitted and product is out-of-the-box ready for installation.
Maximum Rotational Speed	6000 RPM
Item Dimensions L x W x H	3.94"L x 15.75"W x 15.75"H

Ready to buy?

UMLIFE 4PCS 3D Printer Cooling Fan 40mmx40mmx10mm Oil Bearing Blower Fan DC 12V Brushless Cooling Fan with 2 Pin Terminal for Hotend Extruder Heatsinks Makerbot MK7 MK8 CPU Chip (12V 0.08A) is vintage hardware; the used and vintage market on eBay carries most of the live inventory. Prices and condition vary by seller and move in real time, so we link the live listing rather than quote a cached price. It also has an Amazon listing — check it for current price and availability. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

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