25mm Plastic Pulley – Lightweight 2mm Bore Drive Wheel for DIY Robotics, Science Projects, and Toy Motor Applications

Product Description

The 25mm Plastic Pulley is a lightweight and versatile mechanical component designed for a wide range of motion transfer applications. Specifically engineered with a 2mm centre bore, it provides a snug press-fit onto standard toy motors and 2mm shafts, making it an essential part for DIY robotics, science fair projects, and custom toy manufacturing. Whether you are building a rubber-band-powered car, a pulley-based lifting system, or a belt-driven mechanical assembly, this pulley offers a low-friction solution to transfer torque efficiently. At Robogears, we recommend this pulley for its durability and perfect compatibility with our extensive range of small DC motors and gears.

Detailed Key Features

• Universal 2mm Compatibility: Precision-sized to fit most hobbyist DC motors and standard 2mm steel shafts without the need for additional couplers.

• Lightweight PVC Construction: Made from high-quality PVC plastic, ensuring the component adds minimal rotational inertia to your system, which helps in maintaining motor speed and battery life.

• Belt-Drive Ready: Features a dedicated groove designed to securely hold rubber bands or small drive belts for smooth power transmission between shafts.

• Easy to Integrate: The simple "bore-wheel" design allows for instant installation—simply push it onto a compatible shaft to get started on your project.

• Durable & Impact Resistant: Despite its small size, the PVC material is robust enough to withstand the typical wear and tear of school projects and hobbyist experimentation.

Prototyping & Engineering Tips (Robogears Exclusive)

• Secure Mounting: If the pulley feels loose on your motor shaft, a tiny drop of "instant glue" (CA glue) can permanently lock it in place. However, be careful not to let any glue seep into the motor bearings.

• Belt Selection: For best results in your Pimpri workshop projects, use high-elasticity rubber bands or dedicated polyurethane belts. Ensure the belt is tight enough to prevent slipping but not so tight that it creates excessive side-load on the motor shaft.

• Gearing Ratios: You can create a simple speed reduction system by connecting this 25mm pulley to a larger wheel or another pulley of a different size using a belt.

• Shaft Preparation: If you find the fit too tight, a quick rub with a fine-grit sandpaper on the tip of the 2mm motor shaft can help ease the pulley onto the motor.

Package Includes

• 1 x 25mm Plastic Pulley (2mm Bore)

Image Disclaimer

Image shown is for illustrative purposes only; the actual product may vary slightly in colour or exact dimensions due to manufacturing updates, though all technical specifications will remain as described.