Y-bearings can accommodate initial misalignment by tilting in the housing (fig. 1
), because of their sphered outside surface. The permissible values are:
relubrication is not required → 5°
relubrication is required (where applicable) → 2°
SKF pressed steel housings
Misalignment cannot be accommodated once the attachment bolts have been fully tightened, unless a rubber seating ring is used.
Y-bearings can accommodate a few minutes of arc (misalignment) between the inner and outer rings.