51111 Thrust Ball bearing, this is a popular size that could be used in many application that uses this size 55mm x 78mm x 16mm. Thrust bearing is known to high axial or Vertical loads. Bearing is made of Chrome Steel
Type: Thrust Ball Bearings Dimensions: 55mm x 78mm x 16mm/Metric ID (inner diameter)/Bore: 55mm OD (outer diameter): 78mm Width/Height/thickness: 16mm