The COBRA software package is capable of evaluating
rolling-element bearings. Practically any bearing or
bearing system available in the industry can be analyzed with one of the
bearing solution modules.
The ROLLING-ELEMENT bearing module [COBRA] predicts the performance of up to
six bearings of different types mounted on a shaft and experiencing radial,
thrust and moment loading. Bearing types include Conrad (radial)
ball, angular contact ball, cylindrical roller tapered roller, and spherical
roller bearings. The program allows the evaluation of misalignment, offsets,
preload, clearance or end-play on bearing performance. Bearing preload from
spacer grinding or shimming as well as preload springs is included. Individual
bearings can be made to "float". Bearing performance results
with COBRA include ball load distribution, stress distribution, system
and individual bearing reaction loads and displacements, Hertz contact
stress, B10 life, contact angles, and spring rate (stiffness).