DT Swiss Cartridge Bearing

Compatibility is determined by dimensions, not just the brand. You must verify that your current bearing measures exactly 17mm inner diameter, 28mm outer diameter, and 7mm in height. If your existing bearing matches these specifications, this part will provide the correct fit.

Yes, this is a sealed cartridge bearing. This design is preferred for cycling applications because it protects the internal rolling elements from dirt, moisture, and debris, ensuring smoother rotation over a longer lifespan compared to open-style bearings.

Replacing cartridge bearings typically requires a bearing press tool to ensure they are seated perfectly straight without damaging the hub shell. While it is a manageable task for experienced home mechanics with the right tools, a professional shop is recommended if you do not have experience with press-fit components.

You should consider replacement if you feel 'notchy' or gritty movement when rotating the axle by hand, or if you notice lateral play (wobble) in the wheel that persists after tightening your quick-release or thru-axle. These symptoms indicate the internal races or balls have worn down and are no longer providing smooth rotation.

Yes, these bearings arrive pre-lubricated with high-quality grease suitable for hub applications. They are ready to install directly out of the packaging without the need for additional lubrication.