CEMA 699 Ceramic Hub Bearing
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The CEMA 699 bicycle hub bearing measures 9 x 20 x 6 mm: an inner bore of 9 mm, an outer diameter of 20 mm and a thickness of 6 mm. It replaces a worn hub bearing when the wheel turns with play or friction, and is intended for anyone maintaining their bike who wants replacement parts with the right dimensions.
The bearing is available in ceramic or chrome-plated steel, with ABEC 5 precision class and a double seal to protect the inside from dirt. The finish is silver and black. Before ordering, measure the inner diameter, outer diameter and thickness of the bearing to be replaced and compare them with the listed specifications.
| Type | Ceramic or chrome-plated steel |
|---|---|
| Inner diameter | 9 mm |
| Outer diameter | 20 mm |
| Thickness | 6 mm |
| Colour | Silver and black |
| Seal | Double |
| Precision class | ABEC 5 |