BALL BEARING; BALL BEARING; RIGID TYPE SPHERES; WITH ONE CARRIER; INSIDE DIAMETER 50 MM; OUTSIDE DIAMETER 110 MM; THICKNESS 27 MM; WITH STEEL HOLE; WITH DOUBLE SEAL; WITH NORMAL GAP; WITHOUT PROTECTION; BRAND 1: FAG; REFERENCE 1: 6310 2RSR/FR; BRAND 2: NSK; REFERENCE 2: 6310 2RS1/FR; BRAND 3: SKF; REFERENCE 3: 6310 2RS1/FR