ucf310 d1 nskUCF310D1 Bearing UC310D1 Bearing Housing F310D1 Housing d 50 mm Bore diameter L 175 mm Overall length J 132 mm Distance between attachment bolts N 23 mm Diameter of attachment bolt hole A2 28 mm Flange width A1 19 mm Flange width A 48 mm Base width A0 67 mm Overall width B,B1,B2 61 mm Width of inner ring S 22 mm Distance from Opposite side face of locking device to raceway centre G M20 Bolt size Cr 62 kN Basic dynamic load rating C0r 38. 5 kN Basic