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4.9/5 Rating Rated by 800+ Customers on Google

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Genuine Products Quality checked before dispatch

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Built for Makers Robotics • Electronics • DIY

🎓

Student Friendly Perfect for projects & learning

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Startup India Recognized Recognized startup company

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Physical + Online Store Visit us in Pimpri or shop online

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75pcs DIY Gear Kit - Plastic Gear Assortment for Robotics

Specification	Details
Total Components	75 Pieces
Material	High-Quality ABS / POM Plastic
Aperture/Bore Sizes	1.9mm, 2.05mm, 2.4mm, 2.9mm, etc.
Gear Types	Spindle, Single, Double, Crown, Worm, Bevel
Accessories	Pulley, Rack, Belt, Sleeve/Bushings
Compatibility	2mm and 3mm DC Motor Shafts & Axles

Price

🚚 Ships within 24 Hours
📦 Pan India Delivery

₹ 194.92

(Tax included)

Barcode: 643819

Product Description

The 75-Piece Assorted Gears & Accessories Kit is a comprehensive mechanical engineering library in a single package. Designed for students, hobbyists, and repair technicians, this kit provides a vast array of transmission components to solve almost any motion-related challenge. Whether you are building a complex robotic arm, a high-speed RC vehicle, or repairing a broken household appliance, this kit offers the specific gear ratios and connectors you need. The components are molded from durable, low-friction plastic, ensuring smooth operation and long-wear life. With various bore sizes ranging from tight press-fits to loose-spinning idlers, this assortment is the ultimate "toolbox essential" for creative prototyping.

Key Features

Massive Variety: Contains 75 unique pieces including spur gears, crown gears (for 90° transmission), worm gears (for high reduction), and pulleys.
Precision Fit: Includes gears with "tight" (1.9mm) bores for 2mm shafts and "loose" (2.05mm) bores for free-spinning 2mm axles.
Complete Transmission Sets: Features plastic racks and rubber belts, allowing you to convert rotational motion into linear motion or transfer power across distances.
Standardized Modulus: Most gears in the kit share a consistent tooth pitch (Modulus 0.5), allowing them to mesh together seamlessly in custom configurations.
Essential Hardware: Includes bushings and sleeves to act as spacers or to adapt different shaft diameters.

Technical Details

Gear Modulus: 0.5M (Standard hobbyist pitch).
Color: Assorted (Typically White, Yellow, and Blue).
Weight: ~100g (Total Kit).

Prototyping and Engineering Tips from Robogears

The "Press-Fit" Trick: CRITICAL: If a gear has a 1.9mm hole and you are struggling to fit it onto a 2mm motor shaft, do not use a hammer. Instead, dip the gear in hot water for 30 seconds to soften the plastic, or use a soldering iron to very briefly warm the motor shaft before pressing the gear on.
90-Degree Power: To change the direction of rotation by 90 degrees, use a Crown Gear meshed with a standard spur gear. This is essential for building steering mechanisms or vertical lifting winches.
High Torque with Worm Gears: Use the included Worm Gear on your motor shaft to drive a large spur gear. This creates a massive gear reduction that provides high torque and, importantly, prevents the mechanism from "back-driving" (the load won't fall when the motor is off).
Reducing Friction: For the smoothest operation, apply a tiny drop of Silicone Grease or dry PTFE lubricant to the gear teeth. Avoid petroleum-based oils, as they can eventually degrade certain types of plastic.
Belt Tensioning: When using the included rubber belts and pulleys, ensure the belt is taut but not "stretching" the motor shaft. Excessive tension can cause the motor bearings to wear out prematurely or bend the plastic axles.

Package Includes

75 x Assorted Gears, Pulleys, Belts, and Bushings

Disclaimer: Product images are shown for illustrative purposes only. The exact count of each specific gear type may vary slightly between manufacturing batches, but the total count will remain 75 pieces. Some components may vary in color depending on the production run.

Safety Warning: This kit contains small parts that pose a choking hazard. Keep away from children under 3 years old. When experimenting with high-speed DC motors, ensure gears are securely fastened to prevent them from flying off and causing injury.