DC Cooling Fan 5V/12V/24V (2510-12038, Blower 4020/5015)
Cooling fans · 18 models · 4 bearing types · 3 voltages · 115 options in stock
Cooling fans and fan guards for hotends, drivers and enclosures. The parameters are listed in order of importance: the one at the top decides the most, and no amount of care further down makes up for getting it wrong.
This page lists 115 options: Model 2510 / 3010 / 3510 / 4010 … 18 total, Bearing type Ball bearings / Double ball bearing / Hydraulic bearing / Oil-impregnated bearings, Voltage 5V / 12V / 24V, Style / variant Cable length 0.3 meters SM pin terminal / Large 4P connector / Line length 0.3 meters / Line length 1 meter … 8 total, Pack quantity 1–2 (2 options). From ¥2.15.
The parts of this item
Figure 1 — A fan needs four numbers: side length, thickness, voltage, connector — the size gets it in, the voltage makes it turn
What each parameter decides
Every parameter below shows the real range available on this page, and what goes wrong if you pick it wrong. Work through them in this order and you will not go far wrong.
| Parameter | Available here | What it decides | If you get it wrong |
|---|---|---|---|
| Model | 2510 / 3010 / 3510 / 4010 … 18 total | the series and the size | the wrong model will not mount |
| Bearing type | Ball bearings / Double ball bearing / Hydraulic bearing / Oil-impregnated bearings | sleeve or ball — this sets life and noise | a sleeve bearing in continuous use dries out in months |
| Voltage | 5V / 12V / 24V | it has to match your supply exactly | the wrong voltage burns it out, or it will not turn at all |
| Style / variant | Cable length 0.3 meters SM pin terminal / Large 4P connector / Line length 0.3 meters / Line length 1 meter … 8 total | the structural and shape differences | it will not fit, or it will not do the job your mechanism needs |
| Pack quantity | 1–2 (2 options) | how many you get at once | only the unit price changes, not the spec |
How to choose, step by step
- Voltage — 5V / 12V / 24V. 12 V or 24 V, and it has to match the supply exactly.
- Bearing — Ball bearings / Double ball bearing / Hydraulic bearing / Oil-impregnated bearings. Sleeve is cheap and short-lived; ball costs more, lasts longer and is slightly noisier.
How the options on this page are distributed
Figure 2 — how the 115 options on this page are spread across each parameter: the bars on the left show how many options sit in each band, the panel on the right shows the real range of every parameter and how many steps it has.
Variant quick reference
| Model | Bearing type | Voltage | Style / variant | Pack quantity | Options |
|---|---|---|---|---|---|
| 2510 | Double ball bearing / Hydraulic bearing | 5V / 12V / 24V | Standard | 1 | 6 |
| 3010 | Double ball bearing / Hydraulic bearing | 5V / 12V / 24V | Standard | 1 | 6 |
| 3510 | Double ball bearing / Hydraulic bearing | 5V / 12V / 24V | Standard | 1 | 6 |
| 4010 | Double ball bearing / Hydraulic bearing / Oil-impregnated bearings | 5V / 12V / 24V | Line length 0.3 meters / Line length 1 meter | 1 | 10 |
| 4020 | Double ball bearing / Hydraulic bearing / Oil-impregnated bearings | 5V / 12V / 24V | Standard | 1 | 9 |
| 4020 Blower | Double ball bearing / Hydraulic bearing / Oil-impregnated bearings | 5V / 12V / 24V | Standard | 1 | 9 |
| 5010 | Double ball bearing / Hydraulic bearing / Oil-impregnated bearings | 5V / 12V / 24V | Standard | 1 | 9 |
| 5015 blower | Ball bearings / Oil-impregnated bearings | 5V / 12V / 24V | Standard | 1 | 6 |
| 6010 | Double ball bearing / Hydraulic bearing / Oil-impregnated bearings | 5V / 12V / 24V | Standard | 1 | 9 |
| 6015 | Double ball bearing / Hydraulic bearing / Oil-impregnated bearings | 5V / 12V / 24V | Standard | 1 | 9 |
| 6025 | Oil-impregnated bearings | 12V | Silent cord length 0.3 meters | 1 | 1 |
| 8010 | Double ball bearing / Hydraulic bearing / Oil-impregnated bearings | 5V / 12V / 24V | Large 4P connector / Standard | 1–2 (2 options) | 13 |
| 8015 | — | 5V / 12V / 24V | Standard | 1 | 3 |
| 8020 | Oil-impregnated bearings | 5V / 12V / 24V | Standard | 1 | 3 |
| 8025 | Oil-impregnated bearings | 5V / 12V / 24V | Standard | 1 | 3 |
| 9225 | Double ball bearing / Oil-impregnated bearings | 5V / 12V / 24V | Cable length 0.3 meters SM pin terminal / Wire length 0.3 meters 2.54 positive terminal | 1 | 8 |
| 12025 | Oil-impregnated bearings | 5V / 12V / 24V | Standard | 1 | 3 |
| 12038 | Oil-impregnated bearings | 12V | Mute / Standard | 1 | 2 |
This table is a summary: one row per Model, with the other parameters available in that group. For an exact combination, use the selector at the top of the page — it shows the single part number and price.
Reading the part numbers
| Part no. | Configuration |
|---|---|
FAN-12025-SL-12V | Model 12025 · Bearing type Oil-impregnated bearings · Voltage 12V · Style / variant Standard · Pack quantity 1 |
FAN-12025-SL-24V | Model 12025 · Bearing type Oil-impregnated bearings · Voltage 24V · Style / variant Standard · Pack quantity 1 |
FAN-12025-SL-5V | Model 12025 · Bearing type Oil-impregnated bearings · Voltage 5V · Style / variant Standard · Pack quantity 1 |
You can order by part number or by selecting the parameters. The part number is fastest, but it does not always encode every parameter — the selector on this page is the authority.
8 common mistakes
- The size is in the part number. 4010 means 40 x 40 x 10 mm. The wrong one will not fit the duct and there is no adapting it.
- Wrong voltage means no turn or a burnt coil. A 12 V fan on 24 V lasts seconds.
- Airflow and static pressure are different. Blowing through a heatsink needs pressure; moving air through a case needs flow. Pick the wrong one and it does nothing.
- Check the arrow. Fans have a flow arrow moulded into the housing. Fitted backwards it fights the airflow it was meant to help.
- Do not stack two fans in series to double the flow. It doubles the pressure and adds almost nothing to the flow.
- Measure before you order. Take the old part off and measure it, or send us a photo with the caliper reading — that beats guessing from a model number every time.
- Everything here is in millimetres. Where a size is imperial, convert it: 1" = 25.4 mm, 1/4" = 6.35 mm, 3/32" = 2.38 mm.
- The price is per pack. This page has several 1–2 (2 options) options, so compare the quantity per pack before you compare prices.
When to replace it
You do not replace this until it fails — but "still looks usable" and "still reliable" are two different things. Any one of these and it is time:
- Bearing noise — a rumble or a squeak — and the speed has dropped.
- Blades caked with dust, running out of balance and vibrating.
- Will not start, or needs a push — bearing dried out or winding aged.
Fitting and use
Before wiring
- Confirm voltage and polarity first. Reversed, it is destroyed on the first switch-on — there is no second chance. DC parts especially.
- Wire with the power off, then check continuity and insulation with a meter before you apply power.
- Crimp or tin the wire ends. Twisting bare strands onto a terminal gives a high-resistance joint that heats up.
Mounting
- Leave the heated parts some air. Do not mount them against plastic or against the cable run.
- Parts with a direction (fans, check valves) have an arrow. Reversed, you lose most of the airflow or flow.
- Fasten it properly. Vibration loosens terminals, and loose terminals are the most common electrical failure there is.
First power-up
- First power-up from a current-limited supply, or through a fuse. If something is wrong the damage stays small.
- Run it unloaded first, measure current and temperature, then add load.
- After 30 minutes feel the terminals and the cable. Anything noticeably warm means high contact resistance — re-crimp it.
Three things not to do
- Do not connect or disconnect under power unless it is explicitly rated for hot-plug. The arc damages the terminals.
- Do not run above the rating. It works for a while, then it does not.
- Do not skip the earth or the fuse. You save a few yuan and risk the machine.
Matching parts
- Fan guard or finger grille
- Screws and anti-vibration mounts
Lead time, custom work and shipping
- Stock sizes: dispatched in 1–2 working days, subject to stock
- Custom: non-standard sizes, materials and treatments are possible — send quantity and drawing
- Shipping: from Shenzhen; domestic courier by default, DHL or dedicated line for export
- Volume: quantity pricing available, contact us for a quote
If you cannot find the size you need, or you are not sure which one fits, send us the problem you are solving — what machine it goes on, the dimensions of the part you have, what it has to achieve — and we will match it.