Green Crown Tread Polyurethane Tire With Ball Bearing 5x20x7mm For Small Machinery And RC Projects Durable PU Wheel With 5mm Inner Diameter, 20mm Outer Diameter, 7mm Width, Ball Bearing Included, High Precision Micro Tire

This compact 5x20x7mm Green Crown Tread PU tire includes a built-in ball bearing for smooth, reliable motion in compact drive systems. It's a great fit for mini robotics, small CNC projects, and hobby conveyors where space is limited.

✅ Inner diameter: 5 mm
✅ Outer diameter: 20 mm
✅ Width: 7 mm
✅ Color: Green
✅ Material: Polyurethane tire with ball bearing

💡 What is a handy use for a sealed ball bearing wheel in small machines?

For compact moving parts, this setup delivers smooth motion with minimal upkeep.

• handy for tiny drive wheels, guides, and mini conveyors
• improves alignment and reduces friction in tight spaces
• works in hobby robotics, 3D printers, and small automation setups including linear slide unit projects
• sealed ball bearing helps keep dirt out and extends life