... StandardDIN15207, DIN22107, ISO1537, GB10595CertificateISO, CEType conveyorDTII, TD75,DTII(A)Bearing NO6204/6205//6306/6307/6308 etcShaft Materialcarbon steel, Rubber , ... materialcarbon Steel .Q235.Shaftbright drawn steel to required bearing toleranceBearingrow deep groove ball bearing 2Z and 2RS with C3 clearance.Rubberheat vulcanized ... 308 309 21920;25;30;40;45308 309 parallel self-aligning idler