Linear actuator

A linear actuator comprising:

• a housing,
• a reversible electric motor,
• a transmission,
• a spindle driven by the electric motor through the transmission,
• a bearing at a shaft end of the spindle,
• a spindle nut secured against rotation on the spindle,
• an outer tube surrounding the spindle,
• an activation element connected to the spindle nut, and
• a rear mounting designed as a separate element and secured in the housing for mounting of the actuator, the rear mounting including a recess forming a seat, a first opening which extends to an end of the rear mounting through which the shaft end of the spindle can extend with the bearing, and a second opening which extends laterally of the first opening and outwardly to a side of the rear mounting so that the bearing can be inserted sideways into the rear mounting and against the seat, wherein said seat, said first opening and said second opening provide a U-shaped channel, and including a closing element closing the U-shaped channel, and wherein the closing element fits into the U-shaped channel and slides along the U-shaped channel to contact a spindle bearing located therein.