NSK 53306-U Axial Deep Groove Ball Bearing - 30 mm ID, 62 mm OD, 25 mm Width Yoke Type Track Roller They feature a black oxide

They feature a black oxide finish for abrasion resistance

and other industrial chain applications requiring reliable automatic oil lubrication

Open ring spanner insert

The 4-piece separator set 15-A is used for pulling ball bearings

NSK 53306-U Axial Deep Groove Ball Bearing - 30 mm ID, 62 mm OD, 25 mm Width Yoke Type Track Roller They feature a black oxideAxial Deep Groove Ball Bearing NSK axial (thrust) deep groove ball bearings are designed to support pure axial loads and consist of shaft and housing washers and a ball and cage assembly. Single direction and double direction variants are available; single direction handles thrust in one direction only.