... ,TIMEKN,IKO,NACHI, ASAHI,EASESeriesAll SeriesMaterialChrome steelCage MaterialBrass,Ductile Iron,Solid steel,Steel,Carbon steel,Copper,Nylon,etc.ID Size1-10000mmCertificationISO9002 ... housing; the rings, which are simply bolted on the seating surface are available in one of three executions:1.Without gears2 ...