The NKIB 5907 NA is a high-performance combined needle roller / angular contact ball bearing. It is designed for applications where space is limited but the bearing must handle both heavy radial loads and double-direction axial (thrust) loads.
The "NKIB" designation specifically means this bearing can accommodate axial displacement and axial loads in both directions, unlike the "NKIA" series which only handles axial loads in one direction.Two-Part Inner Ring: The NKIB 5907 features a separable inner ring. One part is wider and carries the needle rollers, while the second part is a smaller ring that completes the angular contact ball raceway.
