Nachi Bearing 20TAB04U 2LR Ball Screw Support Bearing 20mm Inner Diameter 47mm Outer Diameter 15mm Width With Two Seals Top Notch Pro Grade For CNC Machinery And Linear Motion Systems

Nachi 20TAB04U single bearing, dual-seal screw bearing
✔️ 20x47x15 mm, two seals, 2LR ball screw support bearing

This Nachi 20TAB04U ball screw support bearing with two seals is built for CNC machinery and linear motion systems. It delivers robust axial support and smooth motion for precise positioning in automated setups.

✅ Inner diameter: 20 mm
✅ Outer diameter: 47 mm
✅ Width: 15 mm
✅ Two contact seals protect lubricant and keep contaminants out
✅ Pro-grade Nachi design for CNC and linear motion setups

💡 What is a ball screw support bearing used for in CNC machinery and linear motion systems?

In short, it keeps the screw aligned under load and preserves motion accuracy.

- Supports the screw shaft and absorbs axial loads to prevent deflection
- Keeps the nut and guides aligned for repeatable positioning
- Seals minimize lubricant loss and resistance to contaminants