spherical roller thrust bearings are produced in two designs depending on the size and series. Bearings up to and including size 68 identified by the designation suffix E have a pressed steel window-type cage which, with the rollers, forms a non-separable assembly with the shaft washer All other bearings have a machined brass or steel cage which is guided by a sleeve held in the shaft washer bore. The shaft washer and cage with rollers form a non-separable unit.