Abstract: A vibratory coolant strainer for a cutting tool coolant supply system for a machine tool. A strainer screen assembly is rotatably mounted on a coolant system fixed supply pipe. A yoke is attached to the upper section of the strainer screen assembly and it is rapidly vibrated by a plural lobe cam which imparts a rapid vibratory or rotary oscillating motion to the strainer screen assembly so as to free it of metal chips and other dirt. The plural lobe cam is secured to a rotatably mounted shaft which is operatively supported in a housing attached to the supply pipe. The cam shaft may be driven by a suitable motor, or a belt or chain from a power source which is internal or external of the machine tool.