4x16x5mm Polyurethane Miniature Wheel Roller Bearing With Tire 16mm Low Noise PU Wheel For Small Machinery And Robotics, 4mm Inner Diameter, 16mm Outer Diameter, 5mm Width, Ideal For Micro Guides And Pulleys

Compact polyurethane miniature pulley wheel bearing with a tire for smooth, low-noise rotation in small machinery, hobby robotics, 3D printers, and compact conveyor guides. The 4 mm bore accepts small shafts, while the 16 mm outer diameter provides stable tracking.

✅ Inner diameter (ID): 4 mm
✅ Outer diameter (OD): 16 mm
✅ Width: 5 mm
✅ Material: PU polyurethane tire for low noise and smooth rolling
✅ Quantity: 1 piece per package

💡 What is a polyurethane mini pulley bearing used for in small machinery? This handy guide explains its role in smooth motion for compact setups. - small machinery pulley bearing for compact robotics - supports 4 mm shafts and 16 mm wheels for tight spaces - polyurethane tire reduces noise and wear in motion - ideal for hobby robotics, 3D printers, and tiny conveyors