NA4906 Single Machined Needle Roller Bearing NA49 Series, 30 mm ID, 47 mm OD, 17 mm Width, High-Carbon Steel Inner Ring with Oil Hole, Caged Metric Unit for Linear Slide Shafts

Single NA4906 machined needle bearing 30×47×17 mm
✔️ High carbon steel inner ring, oil holes, caged NA4906 unit

This single machined needle roller bearing is a compact, high-load bearing with an inner ring and oil holes. It fits shafts and linear slide units used in machine tools, robotics and transmissions.

✅ Model: NA4906, NA49 metric series
✅ Type: Caged machined needle roller bearing
✅ Inner diameter: 30 mm, Outer diameter: 47 mm
✅ Width: 17 mm, High carbon steel inner ring
✅ Oil hole: With oil holes for lubrication
✅ Dynamic load capacity: 25200 N, Static capacity: 34700 N
✅ Max speed: 11000 rpm, Open enclosure

💡 What is a needle roller bearing used for in linear slide units and shaft support applications? Needle roller bearings give compact, high-radial-load support for shafts and guide rails. Quick take: - Ideal when you need a handy, space-saving bearing for high radial loads in linear slide units. - Caged, machined designs help keep rollers aligned and let oil-hole lubrication reach rolling elements. - Often used in machine tools, robotics, transmissions and other shaft support setups where load capacity and compact size matter.