EMAG VSK 400

The EMAG VSK 400 is a vertical turning center that integrates hard turning and cylindrical grinding in a single machine, enabling complete finish machining of hardened bearing components, gear blanks, and shaft seats without rechucking. The VSK platform combines EMAG's well-proven inverted pick-up spindle concept with a grinding spindle mounted on the same turret carriage, allowing the machine to perform both operations in one clamping by simply indexing to the appropriate tool station.

Hard turning followed by in-process grinding is a compelling combination for components that require the productivity of turning for stock removal and the surface integrity of grinding for final dimensions and Ra values. The VSK 400 is specifically designed for rings, flanges, and similar chucked parts up to 400 mm in diameter that have been induction or case hardened prior to finish machining. By removing the re-clamping step between hard turning and grinding, the machine eliminates re-fixturing errors that would otherwise compromise runout and concentricity.

The machine uses EMAG's Mineralit polymer concrete base to maintain thermal and dynamic stability during both turning and grinding cycles. Coolant delivery is optimized for the transition between operations, and the control system (Siemens SINUMERIK) manages the switchover between turning and grinding parameter sets automatically based on the active tool. An integrated measuring probe provides closed-loop dimensional control, allowing the machine to compensate for grinding wheel wear in real time.

The VSK 400 is a natural fit for automotive bearing manufacturers, gearbox producers, and precision ring-rolling operations where hardened components require tight tolerances on bore diameter, face flatness, and surface finish. When integrated with EMAG induction hardening machines and conveyor systems, the VSK 400 becomes part of a complete soft-to-hard machining line that requires minimal floor space relative to the operations it replaces.