Linear compressor

A linear compressor, comprising:

• a compressor casing including a cylindrical shell and a pair of shell covers that covers ends of the shell;
• a frame fixed to an inside of the shell;
• a cylinder accommodated in the shell and defining a compression space for a refrigerant;
• a piston inserted into the cylinder to linearly reciprocate in an axial direction of the cylinder and compress the refrigerant provided to the compression space;
• a motor assembly including a motor that provides power for a linear reciprocating motion to the piston, and a motor support that supports the motor;
• at least one spring that allows a resonant motion of the piston;
• a back cover that supports the at least one spring;
• and
• a plurality of stoppers which is provided in one of the pair of shell covers and contacts the back cover when the motor assembly vibrates in a radial direction of the cylinder, thereby preventing the motor assembly from colliding with the shell, wherein an interval between the plurality of stoppers and the back cover in the radial direction of the cylinder is less than a minimum interval between the motor assembly and the shell.