2R1: The larger the size of the pocket
2R1 the larger the optimal value of the axial bearing
stiffness and self-aligning
capability. Design charts for optimal axial
bearing stiffness and self- aligning capability with respect
to 2R1 are available in the book. 2R2: A
small diameter of the inlet hole 2R2 is favorable with
respect to the self-aligning capability of the bearing
but may cause the pressure to drop locally by inertia
forces. The pressure drop by inertia forces can calculated
with equation (12.4) of the book.
h2: The highest load capacity is
obtained with small h0/h2 ratio which means a relative large
pocket depth h2. A shallow pocket however is needed to
obtain axial bearing stiffness and self aligning capability.
In order to select the optimal value for R1/R0 and h0/h2 to
achieve a good compromise in self aligning capability, axial
stiffness and load capacity consult the design charts
available in the book.
h0: The highest axial bearing stiffness,
self-aligning capability and the minimal flow is obtained
with the smallest film thickness. The required film
thickness depends on bearing deflections and flatness of the
bearing surface and is usually related to the bearing size. |