Fluid power systems use a liquid or a gas to transmit power from one location to another. With hydraulics, the fluid is usually an oil. With pneumatics, a gas such as compressed air is used. In both types of systems, the movement of a cylinder plunger produces linear motion.
Unless the bores of hydraulic and pneumatic cylinders have a smooth surface finish, however, performance may suffer. To optimize inner diameter (ID) surface finish, the fluid power industry uses Flex-Hone® tools from Brush Research Manufacturing (BRM).