Answer
The thrust capacity is the lower of two values: Ring Shear and Groove Deformation. Ring shear strength is calculated as $P_r = _x000c_rac{D imes t imes au imes _x0008_eta}{S}$, where $D$ is the shaft/bore diameter, $t$ is the ring thickness, $\tau$ is the shear strength of the ring material, and $\beta$ is a safety factor. Groove deformation (yielding) is usually the limiting factor when the housing is made of softer materials like aluminum. It is calculated based on the groove depth ($d$) and the yield strength of the housing material ($\sigma_y$): $P_g = _x000c_rac{D imes d imes \sigma_y imes an(\alpha)}{K}$, where $\alpha$ is the contact angle. In most engineering designs, a safety factor of 2 or 3 is applied to ensure the groove does not 'roll over' and eject the ring under peak loads.
