FYH Bearing UCC311 55mm Cartridge Mounted BearingFYH Bearings Cartridge Mounted Bearing Cylindrical bore (with set screws) 55mm Inner Diameter Bearing This round cartridge unit is machined with h7 accuracy and allows for shaft expansion and contraction in an axial direction. Available in normal, medium and heavy duty units. d = 55mm H = 150mm A = 44mm r = 3mm B1 = 66mm Unit No = UCC311 Bearing No = UC311 Basic Load kN (Cr)= 71. 6 Basic Load kN (Cor)= 45