VKM5 Valve Grinding Machine
| Valve stem diam.
| Max. valve head diam.
|Valve seat angle||19°-46°|
|Grinding wheel diam.||250mm|
|Speed at 50Hz||2800rpm|
|Speed at 50Hz||3-14rpm|
|Coolant capacity||30 liters|
| Supply voltage
| (3ph 50/60Hz) or
Extra heavy rigid cast iron design with an integrated prismatic slideway for the workhead and steady rest.
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.
The standard VKM 5 features a self-centering steady rest and a three-jaw chuck to align all valves with stem diam. from 40 to 90 mm.
Both the workhead and the stready rest are adjustable along 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.
The double support of long stem valves ensures the ultimate valve refacing accuracy.
A separate coolant reservoir is provided to efficiently settle out grinding residue.
Coolant is delivered to the grinding site by an industrial type flood pump.
Oscillating Equipment (Option)
Automated power traverse of thegrinding wheel along the valve face is available to assure efficient stock removal and superior finish.
The stroke of oscillation is infinitely adjustable.
Automated Infeed (Option)
Power infeed is available for automatic grinding according to a preselected program.
The feed rate, the total infeed and the sparkout time can be easily selected.
Workhead for smaller valves (Option)
A workhead type 4E can be placed on the prismatic slideway for grinding valves with stem diameter from 9 to 40mm.
The work spindle of workhead type 4E is provided with a collet chuck for precise alignment of the valves.