INDUCTION MOTOR Russian patent published in 2001 - IPC

FIELD: driving wood-working machines, motor-pump units, and the like. SUBSTANCE: motor has wound stator press-fitted into frame, rotor mounted on steel shaft, frame-coupled rear and front endshields provided with through bores, shaft-mounted fan with shroud, and terminal box for terminal unit to connect motor to three- phase supply mains. Front endshield has annular drilling in vicinity of bearing seating in endshield and is provided with main locking snap ring tightly fitted in drilling, its thickness h_s amounting to 0.14-0.16 of bearing width H and also with additional ring mounted on other end of bearing, its thickness h_a amounting to 0.06-0.08 of bearing width H. Additional ring is installed for axial displacement and abutting against bearing. Such mechanical design provides for eliminating axial displacement of drive end of shaft mounting working element of driven mechanism. EFFECT: provision for reliable locking of motor and driven-mechanism shafts in definite position. 10 cl, 13 dwg