Abstract: A thrust bearing assembly for positioning and maintaining both washers of a spherical roller thrust bearing in alignment with a rotatable shaft that is supported by the bearing. The assembly is characterized by including a reciprocally movable chair member for seating the housing washer of the spherical roller thrust bearing in a manner that prevents the washer from being unduly tilted relative to its axis of rotation when the chair member slides axially relative to the shaft. A back portion of the chair member is made to exceed the height of the housing washer by a predetermined amount such that the relationship of its height to the overall diameter of the chair member is a desired ratio relative to the radial clearance of the chair member with its supporting housing. This relationship of the components prevents the housing washer and chair member from tilting more than an established tolerance angle relative to the axis of rotation of the shaft.

Abstract: A combination baffle and deflector for guiding ventilating air in and around a dynamoelectric machine is characterized by incorporating an annulus having integrally formed base, leg and rim portions that enable the baffle and deflector member to be mounted on one end of a dynamoelectric machine to provide optimum air flow control while also providing apparatus for blocking entry of rodents, snakes, and other similar foreign objects into the machine. In a combined form of the invention the unique baffle and deflector member is assembled with an electric motor that has a plurality of axially extending, radially projecting cooling ribs on an exterior surface of its housing. Fin portions integrally formed with the baffle and deflector member are disposed to cooperate with the cooling ribs on the motor housing to provide an efficient and inexpensive screen over one portion of the ventilating passageways through the motor.

Abstract: A vertical electric motor characterized by having a ventilation system consisting of air inlet passageways adjacent the top and bottom of the machine arranged in combination with air directing baffles, fans and air-flow-controlling bleed apertures to provide an exhaust air flow that effectively limits contact between the turbulent, heated exhaust air streams and the streams of cooling air entering the motor. In particular, the structure and arrangement of the component parts of the motor ventilating system are such that an area of turbulent exhaust air is positioned farther away from generally axially oriented air inlet passageways at the top of the motor than to more radially oriented inlet air passageways at the bottom of the motor.