VKM2

Valve grinding machine for valves with stem diameters up to 32.5mm

Technical Data:

Operating range:
Valve stem Ø 6 – 32.5mm
Max. valve head Ø200mm
Valve seat angle19°- 47°
Grinding spindle:
Grinding wheel Ø 175mm
Speed at 50 Hz2790 rpm
Workhead spindle:
Speed, standard50 rpm
Speed, option5-60 rpm
Coolant system:
Capacity5 liters
Electrical equipment:
Supply voltage400V±10%
(3ph 50/60Hz) or230V±10%
Power consumption0.5kW
Dimensions:
Length800mm
Width550mm
Height450mm
Weight:
Net weight155kg

Features:

Machine bed:
Heavily ribbed cast iron body with integrated guideway for the grinding wheelhead.

Grinding wheelhead:
Box-shaped cast iron construction with excellent damping properties.
Clearly arranged control panel on the front with push buttons for switching the grinding spindle, coolant pump, workspindle, and, if applicable, the valve oscillation on and off.
Maintenance-free motorized grinding spindle.

Workhead and steady rest:
Monolithic workhead with maintenance-free bearings for the workspindle with collet chuck mounting.
Clamping of the valve by means of a precision collet and, for long valves, additional support with a self-centering steady rest.
The workhead and self-centering steady rest are adjustably arranged on an elongated swivel plate and can therefore be set up so that the valve can always be clamped in the area of the valve stem that is normally guided in the valve guide.
Adjustment of the grinding angle by swiveling the swivel plate using the wide-spread angle scale.
The unique combination of collet and self-centering steady rest provides double guidance for the valve stems of long valves, ensuring optimal concentricity.

Automatic oscillation:
The optional automatic oscillation enables an automatic reciprocating movement of the valve along the grinding wheel, achieving optimal grinding performance and a brilliant surface finish.
Oscillation stroke infinitely adjustable.
Smooth oscillation movement due to low-friction longitudinal guidance of the workpiece slide on steel shafts.

Dressing device:
The dressing device is mounted on the workpiece slide and is simply pushed into the dressing position when required.

Coolant system:
The coolant tank, equipped with a settling basin, is housed as a slide-in unit in the machine bed.
The coolant supply is adjustable with a regulating valve.

Electrical equipment:
A separate motor is provided for the drive of the grinding spindle, the workspindle, and the coolant pump. The switching elements for the motors are centrally located in the grinding wheelhead.

Download VKM2 Brochure

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