The inner ring IR55-63-45 from INA has an inner diameter of 55mm, an outer diameter of 63mm, and a width of 45mm. With a weight of 0.255kg, this inner ring is lightweight yet robust. The inner ring is designed without lubrication holes and the raceway is finely machined, with flattened end faces. The surface is not ground to a non-rotating finish, meaning it is not perfectly smooth.
Inner dimension: 55 mm
Outer dimension: 63 mm
Width: 45 mm
Weight: 0.255000 kg