Electric Linear Actuator

An electric linear actuator comprising:

• a housing;
• an electric motor mounted on the housing;
• a speed reduction mechanism to transmit the rotational power of the electric motor to a ball screw mechanism, via a motor shaft, while reducing the motor speed;
• the ball screw mechanism converts the rotational motion of the electric motor, transmitted via the speed reduction mechanism, to an axial linear motion of a drive shaft, a nut includes a helical screw groove on its inner circumference, the nuts is rotationally, but axially immovably, supported by bearings on the housing, a screw shaft is coaxially integrated with the drive shaft, the screw shaft includes a helical screw groove on its outer circumference corresponding to helical screw groove of the nut, the screw shaft is inserted into the nut, via a large number of balls, the screw shaft is non-rotationally supported on the housing but is axially movable;
• the housing comprises a first housing and a second housing arranged with their end faces abutting against one another;
• and
• joining surfaces of the end faces of the first and second housings are sealed by curing liquid curable material.