Abstract: In this article a new calculation technique for stresses in the bush sleeve (shell), strengthened by a case, pulled on it, in the electromotor of the pressurized pump is offered. A stressed-deformed state of the bush sleeve area between the front body part-- a bearing shield (on the left side) and a stator of the motor (on the right side) is considered. A maximum stress in the bush sleeve in the dangerous cross-section and the effect on its value of the casing thickness and technological gap is determined.