If you own a 3D printer, you know the sound of a failing cooling fan all too well. That annoying buzzing or grinding noise usually starts right when you need a print to be perfect.
I have spent plenty of time hunting for replacement parts on AliExpress that do not cost a fortune. I recently picked up a few of these 4010 12025 8010 30mm dc 5V 12V 24V Cooling Fan Brushless Motor Case Quiet 40MM 50MM 60MM 70MM 80MM 90MM 120MM for 3D print 2PIN units to see if they actually hold up.
What are these cooling fans?
These are basic, two-pin brushless DC fans designed to keep your electronics or printer hotends from overheating. You can find them in almost every size imaginable, which is why they are popular for DIY projects.
The main draw here is the price. They are incredibly budget-friendly compared to the brand-name fans you find at local electronics stores. Most sellers offer free shipping, which makes them an easy choice when you need to stock up on spares for your workshop.
Features that matter for 3D printing
The biggest benefit is having options. Since they come in sizes from 30mm all the way up to 120mm, you can find a replacement for almost any part of your machine.
I found the 12V and 24V versions are standard for most printer control boards. The 5V models work great if you are tinkering with Arduino projects or cooling a Raspberry Pi. These fans are simple two-wire setups, so you just plug them in and they start spinning.
Honest pros and cons
- Pros
- Extremely low price point makes them easy to buy in bulk.
- Wide variety of sizes means they fit almost any 3D printer.
- Free shipping options are common on the platform.
- They get the job done for basic cooling needs.
- Cons
- Shipping can take several weeks depending on your location.
- The plastic casing feels cheaper than the stock fan that came with your printer.
- No local warranty if one arrives dead on arrival.
- Customer support is hit or miss if you get a faulty unit.
Who should buy these fans?
If you have a 3D printer that has been running for a year or two, your stock fans are likely near the end of their life. Grabbing a few of these as backups is a smart move for any hobbyist.
You should skip these if you are looking for a permanent, high-performance solution for a machine that runs 24/7 in a professional environment. These are meant for home workshops where you do not mind doing a little maintenance now and then.
What buyers are saying
I talked to a few other makers who use these for their home setups. One friend mentioned he bought a handful of the 40mm fans for his Ender 3. He said they are not the quietest fans on the market, but they move enough air to keep his prints from warping.
Another user noted that while a couple of his fans arrived with slight wobbles, they were so cheap that he did not mind replacing them. Overall, most people agree that they are a decent trade-off between performance and cost.
Final verdict
After testing these, I think they are a solid choice for the price. They are not high-end industrial parts, but they do exactly what they claim to do.
If you are tired of paying premium prices for replacement parts, these are a great way to keep your printer running without breaking the bank. Just make sure to double-check your voltage requirements before you click buy. Grab a few extra to keep in your drawer, because you will eventually need them.
