NSK 6304DU deep groove ball bearing with 20mm bore and one rubber seal delivers smooth radial support, reduced contamination, and long life for compact machinery and reliable, low-maintenance performance

NSK 6304DU 6300 Series Deep Groove Ball Bearing, 20mm bore
✔️ single NSK 6304DU bearing with rubber seal; 20x52x15 mm (bore 20 mm)

The NSK 6304DU is a medium-series, single-row deep groove ball bearing with a rubber seal on one side. This sealed bearing is commonly used in motors, gearboxes, conveyors, and fans where dirt protection and lubrication retention matter.

✅ Bore 20 mm; outer diameter 52 mm; width 15 mm
✅ Rubber seal on one side for dust protection
✅ Normal radial internal clearance CN for general use
✅ 6304DU, sealed bearing in NSK 6300 series

💡 What is a sealed ball bearing used for in general mechanical systems? This handy part helps reduce friction, support loads, and keep lubricants in place.
- Reduces friction for smooth operation in conveyors, motors, and small machinery
- Keeps lubricants in place and contaminants out for longer life
- Handles radial loads with some axial capacity in tight spaces
- Fits in compact assemblies where maintenance time matters