4-Blade Toy Fan Propeller for 2mm Shaft DC Motors DIY Science Project Parts

Technical Details

• Shaft Fit: Optimized for 2.0mm motor shafts (actual bore ~1.95mm).

• Total Diameter: 56mm (tip to tip).

• Hub Thickness: 10mm.

• Rotation Direction: Standard CW/CCW depending on motor polarity.

• Operating RPM Range: 1,000 to 15,000 RPM.

• Safety: Rounded blade tips to minimize impact risk.

Prototyping and Engineering Tips from Robogears

• Tight Fit: The fan is designed with a slightly smaller hole (1.95mm) to create a friction fit on a 2mm shaft. If it is too tight to push on by hand, gently warm the center hub with a hairdryer to expand the plastic slightly before pressing it onto the motor.

• Direction of Airflow: To change the direction of the air (blowing vs. sucking), simply reverse the Red and Black wire connections on your DC motor.

• Thrust Balance: For air-boats or planes, ensure the motor is mounted securely. At high RPMs, even a small propeller can generate enough thrust to move the motor if it isn't fastened down.

• Safety First: Although made of plastic, do not touch the blades while they are spinning at high speeds. Always use a protective mesh or keep fingers clear when the motor is powered.

Package Includes

• 1 x 4-Blade Toy Fan Propeller

Disclaimer Product images are shown for illustrative purposes only and may vary from the actual product due to manufacturing changes, lighting conditions during photography, or batch updates. Color choice is usually random based on current stock availability. While we strive for accuracy, technical specifications are subject to change by the manufacturer without prior notice. Please ensure children are supervised during use in science projects.