Abstract: A wobble plate type refrigerant compressor having a lubricating mechanism provided at a ball-and-socket joint between a wobble plate and a piston rod is disclosed. A wobble plate type refrigerant compressor includes a compressor housing having a cylinder block. A plurality of cylinders are formed around the periphery of the cylinder block and a piston is slidably fitted within each of the cylinders and is reciprocated by a drive mechanism. A crankcase is formed between the cylinder block and a front end plate of the compressor housing. The drive mechanism includes a drive shaft, a rotor fixed to the drive shaft and a wobble plate disposed on an inclined surface of the rotor. The piston rod connects the wobble plate to the piston. A ball at one end of the rod is received in a socket formed at the wobble plate to form a ball-and-socket joint. A hole is formed at the wobble plate to link one end surface of the wobble plate to the friction surface of the ball-and-socket joint.