VKM 5

The extra heavy precision grinding machine for valves up to 110 mm in stem diameter

Application:
The VKM 5 is designed to grind very big valves, especially the valves of Sulzer RTA type engines.

Features:
Machine base:
Extra heavy rigid cast iron construction with an integrated dove-tail slideway for the workhead and steadies.

Grinding spindle:
The powerful grinding spindle is permanently sealed and lubricated for lifetime accuracy.The grinding spindle rests on a compound slide unit including a massive swivel plate with a widespaced scale for exact angular adjustment.
The transverse slide is guided by a pair of steel bars to reduce friction for smooth traversing of the grinding wheel along the valve face.

Workhead and Steadies:
The universal VKM 5 model features two selfcentering steadies to align and clamp all valves from 40 to 90 mm in stem diameter. The workhead of the universal model is fitted with a driver plate for rotating the valve.
The standard VKM 5 model is tailored to a particular engine to be serviced and includes only one steady and a collet chuck in the workhead to grip the valve of the particular engine to be serviced.The workhead and the steadies can be individually located along the slideway on top of the machine base to clamp each valve on that part of the valve stem which normally travels in the valve guide.

Coolant system:
A separate coolant tank is provided to efficiently settle out grinding residue. Coolant is delivered to the grinding site by an industrial type flood pump.

Options:
Oscillating equipment
Automated power traverse of the transverse slide is available to assure efficient stock removal and superior finish. The stroke of oscillation is infinitely adjustable.

Automated infeed
Power infeed is available for automatic grinding according to a preselected grinding program. The total infeed, the feed rate and the sparkout time are easily selected by the mere turn of code switches.

Three-jaw chuck
For grinding the valve seat rings of large B&W two stroke diesel engines, the workhead can be fitted with a three-jaw chuck to grip the valve seat rings.