6mm Bore Bearing With 21mm Nylon Pulley V Groove Track Guide Roller Bearing 6x21x10mm For Precise Linear Motion In 3D Printers CNC Machines And Sliding Systems Featuring Durable Steel Ball Bearing And Smooth Low Friction Performance

This compact bearing pairs a metric 6x21x10 size with a nylon V-groove pulley, ideal for lightweight linear guides in small machines like 3D printers, micro CNCs, and sliding track assemblies.

✅ Bore diameter: 6 mm
✅ Outer pulley diameter: 21 mm
✅ Pulley width: 10 mm
✅ Nylon V-groove pulley with a steel ball bearing inside
✅ Quantity: 1 bearing

💡 What is a small bore bearing with nylon V-groove pulley used for? Handy for basic linear guidance in compact machines. - Supports guided motion along track rails - Common in 3D printers, hobby CNCs, and light automation - The 6x21x10 mm size keeps things compact and affordable