Ceramic bearing Black Bearing 686-2RS

Product Description

CERAMIC BEARINGS BLACK BEARING: Black Bearing bearings are 'hybrid' bearings, more commonly known as 'ceramic' bearings. These bearings meet the requirements of cycling (road, MTB, CLM, Cyclo Cross...) and are used for wheels, cranksets, derailleur pulleys... Compared to a standard steel bearing, Black Bearing ceramic hybrid bearings offer numerous advantages: - Weight savings (ceramic density < that of steel), - Withstand very high speeds, - Longer service life (several times that of a standard bearing), - Less friction = fewer pedaling losses, - Better rigidity, - Better precision, - Better mechanical characteristics (hardness, compressive strength, etc.). Black Bearing Ceramic hybrid bearings comprise the following components: - Inner and outer rings in treated stainless steel for enhanced mechanical strength. - Silicon nitride balls, - Steel cage, - Specific low-friction seals for water and dust tightness (2RS), - Grease specially adapted to ceramic bearings.