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Reliable 4010 24V Axial Cooling Fan for Rat Rig V-Core 3 Eva 3 hotend cooling, 3D printer toolhead airflow, electronics cooling, and compact DIY cooling applications.
$10.95
The 4010 24V Axial Cooling Fan is a compact 40mm x 40mm x 10mm cooling fan used for 3D printer hotend cooling, toolhead airflow, electronics cooling, and small machine cooling applications. This product is listed on the dnb3D product page as the LKD-d4010h24B, with 24V operation, 0.1A current, brushless axial fan construction, dual ball bearing design, a 27mm cable, a 2-pin 2.54 JST-XH connector, and an included 1500mm extension cable.
This fan is especially useful where compact direct airflow is needed around a hotend, heatsink, toolhead, or electronics area. Your current dnb3D product page identifies it as a Rat Rig V-Core 3 specific part used on the Eva 3 toolhead for hot end cooling, with 1 piece required for that application.
The 4010 size refers to the fan’s 40mm x 40mm x 10mm frame. Axial fans are commonly used for hotend heatsink cooling, electronics airflow, compact enclosure ventilation, and general low-voltage cooling where air needs to move straight through the fan body. This makes the 4010 24V Axial Cooling Fan useful for 3D printer hotend cooling, toolhead airflow, controller cooling, and small DIY machine cooling projects.
This fan is listed as a Rat Rig V-Core 3 specific part used on the Eva 3 toolhead for hot end cooling, with one piece required. Hotend cooling is important because it helps maintain a proper thermal break between the heated melt zone and the cooler filament feed path. Poor hotend cooling can contribute to heat creep, clogs, inconsistent extrusion, or filament softening too high in the toolhead.
The fan is rated for 24V operation and includes a 27mm cable with a 2-pin 2.54 JST-XH connector. Your page also notes that it includes a 1500mm extension cable, which can make installation easier in printer builds where wiring needs to route through the toolhead, cable chain, wire loom, or electronics bay. Before installation, confirm polarity, connector orientation, voltage, and controller compatibility.
The LKD-d4010h24B is listed with dual ball bearing construction. Ball bearing fans are commonly preferred for toolhead and machine applications because they can support continuous use and varied mounting orientations better than many basic sleeve bearing fans. This is helpful for moving 3D printer toolheads and enclosed printer environments.
This fan is listed with a speed of 7500 RPM, airflow of 8.29 CFM, loudness of 29.8 dBA, and current draw of 0.1A. These specs make it a practical compact cooling option for printer designs that call for a 4010 24V axial fan.
Although this fan is listed for Rat Rig V-Core 3 Eva 3 hotend cooling, it may also be suitable for other compatible 3D printer toolheads, heatsink cooling setups, electronics boxes, small enclosures, and low-voltage machine cooling applications that require a 40mm x 40mm x 10mm 24V axial fan. Always confirm fitment, airflow direction, electrical requirements, and wiring compatibility before installation.
For related components, browse the 3D Printer Parts category or the Electronics category. This cooling fan can be paired with hotends, toolhead PCBs, extruders, connectors, wiring, fan ducts, silicone socks, and other cooling hardware from dnb3D.
For printer build reference and part compatibility context, review the Rat Rig V-Core 3 GitHub documentation for your specific toolhead and cooling configuration.
Every order is hand-inspected and precision-shipped from dnb3D in Marathon, Ontario. Whether you are replacing a Rat Rig V-Core 3 Eva 3 hotend fan, maintaining a DIY 3D printer toolhead, or cooling compact electronics, this 4010 24V Axial Cooling Fan provides a practical airflow option for compatible 24V systems.
The 4010 24V Axial Cooling Fan is a compact LKD-d4010h24B cooling fan for compatible Rat Rig V-Core 3 Eva 3 hotend cooling, 3D printer toolhead airflow, electronics cooling, and compact machine applications.
| Product Type | Axial cooling fan / 3D printer hotend cooling fan / compact electronics fan |
|---|---|
| Brand / Model | LKD-d4010h24B |
| Fan Class | 4010 axial fan |
| Fan Size | 40mm x 40mm x 10mm |
| Voltage Rating | 24V |
| Current | 0.1A |
| Speed | 7500 RPM |
| Airflow | 8.29 CFM |
| Noise Level | 29.8 dBA |
| Bearing Type | Dual ball bearing |
| Fan Type | Small mini brushless axial fan |
| Cable Length | 27mm cable |
| Connector | 2-pin 2.54 JST-XH connector |
| Included Cable | 1500mm extension cable included |
| Common Printer Fitment | Rat Rig V-Core 3 Eva 3 toolhead hotend cooling |
| Quantity Note | Rat Rig V-Core 3 Eva 3 hotend cooling use requires 1 piece |
| Common Applications | 3D printer hotend cooling, heatsink cooling, toolhead airflow, Rat Rig V-Core 3 cooling, electronics airflow, control box cooling, small enclosure cooling, and DIY machine cooling |
| SKU | DB-0002-4835 |
| Installation Warning | Confirm 24V fan output, connector polarity, mounting size, airflow direction, cable length, connector requirements, and controller compatibility before installation. |
| Fulfillment | Hand-inspected and precision-shipped from dnb3D in Marathon, Ontario, Canada |
Before installing the 4010 24V Axial Cooling Fan, confirm that your printer, toolhead, hotend mount, electronics cabinet, or cooling project requires a 40mm x 40mm x 10mm 24V axial fan. Do not connect a 24V fan to the wrong voltage output or an incompatible controller circuit.
This fan is listed with a 2-pin 2.54 JST-XH connector and 27mm cable. Confirm connector fit, wire polarity, and controller-board pinout before powering the fan. Reversed polarity or incorrect wiring can prevent operation or damage electronics.
This product includes a 1500mm extension cable. Route the extension cable cleanly through the frame, cable chain, wire loom, or electronics bay. Avoid sharp bends, pinch points, moving belts, hotend heat, fan blades, and exposed terminals.
This fan is listed for Rat Rig V-Core 3 Eva 3 toolhead hotend cooling. Confirm your exact toolhead version, printed mount, fan position, screw clearance, connector routing, and airflow direction before installation.
Use appropriate mounting screws and avoid over-tightening. Small fan frames can warp if compressed too hard, which may cause blade rubbing, vibration, extra noise, reduced airflow, or shortened fan life.
Make sure wires, filament strands, printed duct edges, screws, and debris cannot contact the fan blades. After installation, spin the fan gently by hand and check that the blades rotate freely before powering the printer or electronics system.
Route the cable away from hotends, heater blocks, belts, pulleys, moving toolhead parts, fan blades, sharp edges, and hot electronics. Use strain relief where needed so the cable and connector are not pulled during operation.
Axial cooling fans can collect filament dust, plastic strands, and shop debris. Inspect the fan during routine maintenance and clean carefully with power disconnected. Avoid pushing debris into the bearing or damaging the blades.
After installation, test fan operation through the printer interface, controller output, or electronics setup. Confirm that the fan starts reliably, reaches expected speed, moves air in the correct direction, and does not make rubbing or grinding noises.
Every order is hand-inspected before shipping. dnb3D precision-ships cooling fans, electronics, hotend parts, and 3D printer hardware across Canada from our Ontario facility, helping Rat Rig, electronics, and DIY printer builders receive clean, usable parts ready for careful installation.
At dnb3D, we don’t just ship boxes—we manufacture solutions. Operating our Industry 4.0 micro-factory in Marathon, Ontario, means your order is handled by the same people who design and test these components.
Ready to Ship (3D Printer Parts & Hardware): Finished, inspected, and on the shelf. Dispatched within 1 to 2 business days.
In-House Manufacturing (Laser, Plasma, 3D Prints): These items are manufactured “fresh” to order. Please allow 3 to 5 business days for precision cutting and finishing.
Custom Projects: Bespoke designs require a consultation and a locked-in timeline before production begins.
We ship nationwide across Canada and the USA. Centrally located on the North Shore of Lake Superior, we are uniquely positioned to get your products moving quickly to either coast.
We stand behind every weld, cut, and print. If a product doesn’t meet your expectations, contact the Hub within 30 days. If we wouldn’t put it in our own shop, we won’t let it sit in yours.
Standard Items: Contact us within 30 days for return authorization. Items must be in original, unused condition.
Custom/Personalized Orders: Digitally fabricated to your exact specs (names, custom dimensions, or unique finishes) are final sale once production begins.
Shipping Costs: Return shipping is the responsibility of the customer unless the item arrived damaged or defective.
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