Huffman HS-155R Multi-Axis Multi-Function CNC Abrasive Grinding Grinder HS-155R and H-155S Grinding Systems The Huffman HS-155R Series Multi-Axis Superabrasive Grinding Systems is designed for increased productivity, superior precision and reliability for a wide variety of applications including flight and industrial gas turbine components (vanes, vane rings, nozzles, blades and shrouds), medical applications such as broaches and reamers and automotive components. With combined operations using multiple axes, the HS-155R yields faster production rates and greater capacity.