Sagmit BB91 Sealed Bearing Hollowtech Bottom Bracket 68-73mm Mountain Bike MTB Road Bike Compact Hot Sale

   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  Name: Bicycle Bearing Bottom Bracket  Colour: Black, Red  Material: Aluminum alloy + nylon  Inner diameter: 24mm  Size: 97*44mm  Applicable frame bottom bracket shell: 68-73mm  Net weight: about 100g/pc  Packing: Bagged  Note:  Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you!  Please allow 1-2cm measuring deviation due to manual measurement.  Included:  1 X Bike Bearing Bottom Bracket  sealed bearing  3pcs spacer  threaded BB  Compatible to shimano non series, alivio and deore crankset  legit sagmit supplier  #gabrielbikeshop