Rolling bearing arrangement for an electric spindle

摘要

The invention relates to a rolling bearing arrangement for an electric spindle in a textile machine. The rolling bearing arrangement for the electric spindle consists of a hollow shaft (10), on which an electric-spindle rotor (6) is secured. The shaft is supported in a two-row special ball bearing with a split outer race and, at one end, carries a spinning rotor (9), a seal and a centrifugal ring and, on the other end, carries an insert with an orifice (11) to increase the suction effect for a lubricant. The principle of the invention consists in that the front bearing bush is accommodated with its outer surface in an insert (4), relative to which it is rendered immobile by means of a nut (1) screwed into the front cover (2), the outside diameter of the electric-spindle rotor (6) being smaller than the inside diameter of the insert (4) and the outside diameter of the spinning rotor (9) being smaller than the inside diameter of the nut (1). The rolling bearing arrangement according to the invention for the electric spindle can be used to advantage in the construction of fine-spinning machines for the textile industry with operating speeds of over 70,000 rpm. <IMAGE>