V Groove Ball Bearing 3x12x4mm Carbon Steel Double Shielded Linear Motion Bearing for Rail Systems and Track Applications 20 Pieces Set Top Notch Precision Smooth Glide Durable Low Friction

High-precision V-groove bearings set for rail systems
✔️ Carbon steel, double shielded V groove bearings 3x12x4 mm

These V groove ball bearings are precision components designed for linear motion along rails and track systems. This 20-piece set provides enough bearings for multiple projects or as spares.

✅ Size: bore 3 mm, outer diameter 12 mm, width 4 mm (3x12x4 mm) (approx 0.118 x 0.472 x 0.157 in)
✅ Material: carbon steel for durability and long service life
✅ Double shielded design helps keep lubricant in and dirt out
✅ V groove: 1.4 mm deep groove provides stable rail tracking
✅ Pack: 20 bearings in each set for multiple projects

💡 What is a V groove bearing used for in rail and track systems?

V groove bearings guide moving parts along rails with smooth, low-friction movement. - Handy for CNC guides, automation tracks, and linear motion projects - Durable carbon steel with shielded design - Fits standard 3x12x4 mm sizing for quick replacement