The 78 PCS Plastic Gear Set is a versatile assortment of lightweight gears designed for DIY mechanical projects, robotics, STEM learning kits, and small motor-driven systems. It includes a variety of gear types such as spur gears, crown gears, worm gears, pulleys, and shafts, allowing you to build different gear combinations for speed reduction, torque increase, and motion transfer. This kit is perfect for beginners, students, and makers working on small prototypes and educational models.
Core Product Details
• Product Type: Plastic gear assortment kit
• Total Pieces: 78 pcs
• Gear Types Included: Spur gears, worm gears, crown gears, pulleys, shafts (varies by kit)
• Material: High-quality plastic (lightweight and durable)
Mechanical Specifications
• Gear Compatibility: Small DC motors and hobby gearboxes
• Usage Type: Speed reduction, torque multiplication, motion transfer
• Fitment: Common hobby shafts (variant dependent)
• Assembly Style: Push-fit / press-fit on shafts
Performance Characteristics
• Smooth gear meshing for low-noise operation
• Lightweight design reduces load on motors
• Good for low-torque and light-duty motion systems
• Suitable for repeated prototyping and testing
Physical Characteristics
• Material: Plastic (wear-resistant for hobby use)
• Color: Mixed (varies by set)
• Compact storage-friendly kit
• Includes multiple sizes and gear ratios
Compatibility
• DIY robotic cars and small mechanisms
• Hobby DC motors and gear motors
• STEM education projects
• Model making and prototypes
• Arduino and electronics mechanical builds
Key Advantages
• Large variety of gears in one kit
• Perfect for learning gear ratios and mechanisms
• Easy to assemble and experiment
• Cost-effective solution for DIY gear needs
Technical Insights
• Not suitable for heavy loads or high torque systems
• Plastic gears wear faster under continuous high speed
• Proper alignment improves gear life and smoothness
• Lubrication can reduce noise and friction
Applications
• Robotics and DIY gearboxes
• Science and engineering experiments
• Motorized toys and models
• Mechanism demonstrations
• Educational and training kits
Pro Tip
• Start with low-speed motor for best results
• Ensure shafts are aligned to avoid skipping
• Use light grease for smoother operation
• Great for experimenting with gear ratio calculations
Package Includes
• 1 × 78 PCS Plastic Gear Set (assorted gears and shafts)