Sunnen’s HES External Honing Machine stands at the forefront of industrial innovation, offering manufacturers new possibilities for handling the most demanding applications and oversized components. This advanced honing solution merges precision engineering with user-friendly operation, delivering outstanding stock removal rates, perfect surface finishes, and reliable performance for an incredibly diverse range of large parts and materials.
Precision and Productivity for Large Parts
The HES External Honing Machine is built to meet the challenges of industries working with sizable components, from heavy-duty shafts and hydraulic cylinders to turbine and landing gear parts. Capable of machining advanced surfaces, including electroplated hard chrome, plasma coatings, and laser-clad layers, the HES delivers versatility for high-value industrial environments. With a dynamic rack-and-pinion stroke system and optimized spindle drive, users benefit from consistent performance across a wide diameter range.
Its modular rack and pinion design even allows for on-site expansion, adapting to changing production needs. The HES achieves up to 1,400 cm³/hour stock removal, reducing cycle times while producing impeccable surfaces suitable for the tightest specifications. For applications requiring chrome removal, the HES excels, reaching rates of 500 cm³/hour, dramatically outpacing conventional methods and reducing environmental impact by eliminating the need for chemical de-chroming.
Surface Finish That Extends Component Life
Not only does the HES hone with speed and accuracy, it also produces surface structures such as plateau finishes and crosshatch patterns that bring clear functional benefits. For example, a honed piston rod processed on the HES has been shown to prolong seal life, boosting the reliability and longevity of critical components.
Efficiency, Simplicity, and Process Control
Ease of use is at the heart of the HES machine’s design. An intuitive touch control interface and a self-guided setup process mean operators do not need programming skills, and new job configurations can be launched in under two minutes. Built-in guidance recommends optimal spindle speed and cycle parameters, streamlining daily operation.
The HES stands out for its unmatched process control—delivering tool overload protection, automatic geometry correction, and continuous tool expansion control for consistent performance and extended tool life. Additional features such as a quick stone holder system and optional automatic workpiece supports enable fast changeovers and peak productivity, even for workpieces up to 12,000 kg and strokes up to 14,000 mm.
Advanced Engineering for Modern Manufacturing
The floating hone head, cardanic with 25 mm float on each side, plus automatic steady rest support simplify setup and honing of long, slender rods, eliminating the need for pre-straightening. Automatic correction of roundness and parallelism, sizelock, and stone wear compensation functions ensure dimensional precision and minimize manual adjustments. Dwell, oscillation, and spark out capabilities further enhance surface finish and control for large-scale workpieces.
Maintenance is straightforward thanks to a robust Windows® embedded control system, a 15-inch screen, and an advanced coolant system featuring centrifugal filtration, magnetic separation, and oil chilling for process stability and tool life extension. Safety is integral, with CE certification, light curtains, and regulatory compliance built in. Optional software for taper bore applications further increases HES’s flexibility for specialized tasks.
Innovation and Reliability Across Industries
As a trusted "total solutions provider," Sunnen brings more than a century of precision manufacturing and innovation to industries such as aerospace, automotive, energy, hydraulics, medical, and defense. With efficiency, accuracy, and advanced technology built into every system, the HES External Honing Machine reinforces Sunnen’s commitment to delivering tailored, high-performance solutions that address the evolving challenges of modern manufacturing.
