Central Shaft Press-in Ceramics Bottom Bracket for Mountain Road Bike Bicycle New,Blue NO5099

Description:

1. Ceramics are hardly afraid of corrosion, so ceramic rolling bearings are suitable for operation under the harsh conditions of corrosive media.

2. The density of the ceramic rolling ball is much lighter than that of the steel, so the centrifugal force of the outer ring can be reduced by 40% when rotating, and the life is greatly extended.

3. Ceramics are less affected by thermal expansion and contraction than steel. Therefore, when the clearance of the bearing is constant, the bearing can be allowed to work in an environment where the temperature difference becomes severe.

4. The modulus of elasticity of ceramics is higher than that of steel, and it is not easy to deform when subjected to force, so it is beneficial to increase the working speed and achieve higher precision.

Specification:

Inner diameter: 24mm

Material: ultra-light aluminum + PE (polyethylene) hose

Bearing: inner and outer ring-stainless steel

Ball material: zirconia (ZrO2) ceramic material

Weight: 105g

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