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

Component	Specification
Blade Count	4-Blade Design
Material	Lightweight Durable Plastic
Bore Diameter	1.95 mm (Tight fit for 2mm shaft)
Fan Diameter	Approx. 55mm to 60mm
Compatibility	130, 140, and 180 Size Motors
Weight	Approx. 2g to 3g
Design	Aerodynamic Wing Profile

Price

🚚 Ships within 24 Hours
📦 Pan India Delivery

₹ 4.24

(Tax included)

Barcode: 4156451

Product Description This universal 4-blade propeller is an essential component for educational kits, hobby electronics, and miniature cooling models. Designed specifically to fit standard small DC motors, it features a 2mm press-fit bore that ensures a secure grip even at high rotational speeds. The balanced four-blade geometry provides a steady airflow, making it ideal for solar-powered fans, air-propelled boats, and classroom demonstrations of wind energy and aerodynamics.

Key Features

Precision-molded blades for balanced rotation and reduced vibration.
Vibrant colors (varies by batch) for high visibility during rotation.
Easy press-fit installation—no screws or glue required for 2mm shafts.
High-impact plastic construction for resistance against accidental drops.
Compatible with a wide range of hobbyist DC motors (Type 130/140).

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.