... , ISO1537, GB10595Certificate: ISO, CEType conveyor DTII, TD75,TR,DX.Bearing NO: 6204/6205//6306/6307/6308 etcMaterial: carbon steel, Rubber ... material:Tube: carbon SteelShaft: bright drawn steel to required bearing toleranceShaft end: both ends of the tube are simultaneously ... sealing system,(2).High accurate steel pipes ensure the rollers with low vibration and noise.(3).Multi-labyrinth seals ...