QIDI Max4 model cooling fan – original model cooling fan

Original model (part cooling) fan designed for the large-format 3D printer QIDI Max4. This fan is located at the bottom of the print head and, in cooperation with the shaped air duct, quickly cools the freshly extruded filament, significantly contributing to the quality of the final print.

What is the model fan used for

The model fan is crucial for:

• fast solidification of the filament after leaving the nozzle,
• sharp details, clean edges, and stable bridges, especially with PLA and PETG,
• reducing sagging of overhangs and improving surface quality,
• stable cooling at high speeds (Max4 up to 800 mm/s),
• with technical materials at correctly set intensity, it contributes to the balance between layer adhesion and surface cooling.

This specific part is designated by the manufacturer as the “Model Cooling Fan” and is controlled by a 4-pin PWM signal with RPM feedback for precise regulation depending on the material profile.

Key features

• Original QIDI spare part – full compatibility with the QIDI Max4 3D printer.
• Located in the base of the print head – effective direction of airflow directly onto the model.
• 4-pin PWM fan with RPM readout – precise speed regulation according to slicer settings.
• Optimized for high-speed printing Max4 (up to 800 mm/s, acceleration up to 30,000 mm/s²).
• Designed for use in a closed and actively heated chamber up to 65 °C (QIDI Max4).
• Simple replacement – suitable as a quick-change service part in case of fan failure.

Typical use

• Replacement of the original model fan during wear or damage.
• Preventive stock of spare fan for professional operations where minimizing printer downtime is important.
• Maintaining the original printing properties of the QIDI Max4 under high load and long print jobs.

Compatibility

• Compatible model: QIDI Max4
• Position: Model Cooling Fan (model / part cooling fan at the bottom of the print head)

This is not a Hot End Cooling Fan, auxiliary / auxiliary part cooling fan, or a chamber fan – it is specifically the model cooling fan.

Assembly and recommendations

• Before removing the original fan, turn off the printer and disconnect it from the power supply.
• When replacing, follow the connector and wiring orientation according to the original QIDI Max4 connection.
• After installation, verify in the service menu / fan test that the fan rotates correctly and responds to changes in speed settings in the filament profile.
• To ensure long life, keep the air ducts and the fan area clean (regular removal of dust and filament residues).

Technical parameters (according to manufacturer QIDI Max4)

Detailed electrical parameters (voltage, dimensions in mm, or current) are not publicly listed by the manufacturer for the standalone spare part; the fan is intended exclusively for the QIDI Max4 and its original electronics.

This original QIDI Max4 model cooling fan is an ideal choice for all users who want to maintain reliable and precise model cooling and thus the high print quality for which the QIDI Max4 is known.

Key features:

• Original model cooling fan for the QIDI Max4 3D printer
• Ensures fast and precise cooling of the printed model directly under the nozzle
• 4-pin PWM control with RPM measurement for precise regulation in the slicer
• Fully compatible with high-speed printing and QIDI Max4 parameters
• Suitable as a spare service part to minimize printer downtime
• Designed for operation in the closed and heated Max4 print chamber