To provide a compressor improving durability of a bearing arranged in an outer circumference side of a housing and rotatably supporting an electromagnetic clutch.

This compressor is provided with a compression unit 12 executing a series of processes of suction, compression and discharge of working fluid, a rotary shaft 4 driving the compression unit, a housing 2 including a cylinder part 2a surrounding the rotary shaft, and an electromagnetic clutch 14 including a rotor 20 rotatably supported by the housing via the bearing 18 fitted on the outer circumference side of the cylinder part and receiving power from an outside to rotate the rotary shaft, and is provided with a friction member 40 abutting on an inner ring 18a of the bearing in the outer peripheral side of the cylinder part.