18x28x7 Millimeter Double Sealed Ball Bearing 2RS For Bicycle Hub Front And Rear Wheels ISO 492 Standard Fit Low Friction Internal G5 Steel Balls Smooth Spin Pack Of Four

18x28x7 mm Double Sealed Ball Bearing for Bicycle Hubs
✔️ Pack of Four, ISO 492, 7 μm tolerance, 2RS sealed for bike hubs

These compact sealed ball bearings are designed for bicycle hubs, fitting both front and rear wheels to ensure smooth spinning and reliable performance in wheel assemblies.

✅ Inner ID 18 mm, Outer OD 28 mm, Width B 7 mm
✅ ISO 492:2005 standard fit, tolerance about 7 μm
✅ 2RS sealed bearing with synthetic grease for low friction
✅ Gcr15 (G5) bearing steel balls for durability and smooth spin
✅ Weight about 20 g each; Pack of four
✅ Suitable for DT Swiss front and rear hubs
✅ Pack size: 4 pieces per lot

💡 What is an ISO 492 sealed ball bearing used for in bicycle hub applications?

This handy component helps wheels spin smoothly by providing a precise, sealed interface in hub assemblies.

- High-precision ISO 492 fit for bicycle hubs
- 18x28x7 mm size matches many front and rear hubs
- 2RS seal and Gcr15 steel balls for long life
- Pack of four keeps replacements on hand