A comparatively flat rigid item, with or without a centrally located aperture, designed to hold an annular bearing or a sleeve bearing in a fitted inclosure. It must have drilled and/or tapped holes for mounting purposes. Excludes:end bell, electrical rotating equipment.
0.250 inches nominal overall thickness, 34.0 rockwell c minimum and 38.0 rockwell c maximum hardness rating, 14.625 inches nominal outside diameter, 20 bolt circle hole quantity, 12.062 inches nominal aperture diameter