Acros’ proven bearing and sealing technology ensure a long service life for their bottom brackets. The angular contact ball bearings used to absorb the combined axial and radial forces which occur, for example, during weighing and are better than conventional deep groove ball bearings from other manufacturers. A special bearing grease ensures a stable lubricating film at high loads and \"low\" speeds, is also highly water-repellent and offers high resistance to washing out. The new R1 version combines materials and technologies from MTB and road bottom brackets.Key Features:Rubber lip seal + dust cap,Angular contact ball bearing, double sealed.