Closed End Needle Roller Bearing 4x8x8mm With Dual Rubber Seals For Dust And Contaminant Protection, Precision Bearing With 4mm Inner Diameter, 8mm Outer Diameter, And 8mm Width, Ideal For Compact High Speed Applications

Compact Closed End Needle Roller Bearing 4x8x8mm
✔️ 4 mm bore, 8 mm outer dia, 8 mm width; dual seals dustproof

This BK0408 closed end needle roller bearing uses dual rubber seals to keep dust and contaminants out, making it ideal for compact shafts in robotics, automation, and precision equipment where space is tight and loads are radial.

✅ Inner diameter: 4 mm
✅ Outer diameter: 8 mm
✅ Width: 8 mm
✅ Seals: dual rubber seals for dust protection
✅ Weight: 2.1 g
✅ Dynamic radial load: Cr 1780 N
✅ Static radial load: C0r 1310 N
✅ Fatigue radial load: Cur 144 N
✅ Limiting speed: nG 42500 1/min
✅ Reference speed: nB 38500 1/min
Pack size: single bearing

💡 What is a closed end needle bearing used for in compact machinery?

They are handy for supporting rotating shafts in tight setups, reducing maintenance and keeping dust out.

- Handy for robotics, CNC axes, and small gear drives - Sealed designs help resist dust and debris in harsh environments - Ideal for linear guides and compact gearboxes to extend service life