Set Of Four 6904 Bearings For Bicycle Bottom Bracket Repair And Replacement 19.05mm Inner Diameter By 37mm Outer Diameter By 9mm Width Chrome Steel Deep Groove Ball Bearings MR190537 RS Compatible With 6904 19.05

Four 6904 Bottom Bracket Bearings, 19.05×37×9mm Chrome Steel
✔️ 19.05 mm ID × 37 mm OD × 9 mm W (0.75 in × 1.46 in × 0.35 in)

These four bearings are designed for bicycle bottom bracket repair and replacement, offering a direct fit into standard bottom bracket slots. They’re pre-lubricated and ready for roadside or shop maintenance.

✅ Size: 19.05 mm ID (0.75 in) × 37 mm OD (1.46 in) × 9 mm W (0.35 in)
✅ Material: Chrome steel for high hardness and wear resistance
✅ Seal: Single-side rubber seal to keep out dust and retain grease
✅ Installation: Pre-lubricated and tool-friendly for quick swaps
✅ Pack: Set of four bearings for complete bottom bracket repair

💡 What is a sealed ball bearing used for in bicycles and common machinery?

These bearings support rotating shafts with minimal friction while keeping contaminants out and grease in.

- Reduce friction in rotating parts
- Protect bearings from dirt and moisture
- Easy to replace in standard bottom bracket slots
- Widely used in hubs, cranks, and other cycling components