... bearings withseal at both spherical outside surface,and a housing,suitable for sample support ,widely used in varieties of mechanical equipment, ... ball bearings and bearing units2) these units consist of a double-sealed single-row deep groove bearing,and cast iron ... (or other material)housing in various configurations3) types:a)UCP200,UCPH200,SBFD200 b)UCP300,UCPA200,pp200c)UCF200,UCPW200,PF200d ...