EMAG EMAG SN 208

The EMAG SN 208 is the long-bed variant of EMAG’s SN Series CNC out-of-round grinding machines, designed for production grinding of longer camshafts, eccentric shafts, and non-circular profile components up to 380 mm in diameter and 950 mm in length. While sharing the same fundamental architecture as the SN 204, the SN 208 extends the Z-axis travel to 1,600 mm to accommodate the longer workpieces found in multi-cylinder automotive engines and industrial applications.

The heart of the SN 208 is the same hydrostatic X-axis system used throughout the SN Series: a hydrostatic ball screw drive paired with a hydrostatic guideway that provides frictionless, vibration-free axis motion for the rapid direction reversals required in out-of-round grinding. The X-axis travel of 380 mm and the precision of the hydrostatic system enable cam lobe profile accuracy measured in single-digit micrometers — essential for modern engine camshafts where lobe profile directly affects valve timing, engine efficiency, and emissions.

The SN 208 accommodates one, two, or more grinding wheels for simultaneous multi-lobe grinding and combined cam/journal grinding operations. In a typical automotive camshaft application, multiple CBN wheels are positioned along the Z-axis to grind several lobes simultaneously, dramatically reducing the number of indexing operations and total cycle time. The compound table design keeps the footprint manageable despite the extended bed length.

The 950 mm workpiece length capacity covers inline-four and inline-six camshafts, as well as longer eccentric shafts used in industrial compressors and hydraulic machinery. For V-engine and longer industrial camshafts exceeding 950 mm, the SN 310 and SN 320 provide additional capacity.

New EMAG SN 208 machines typically price between $550,000 and $950,000 depending on the number of grinding spindles, automation integration, and application-specific customization.