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VKM 2A
VKM 2.3A
VKM 2.3M
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The compact precision grinding machines for valves up to 32 mm in stem diameter
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Features:
Machine Base:
Heavily ribbed cast iron structure with integrated slideway for wheelhead .
Wheelhead:
Box type monobloc casting noted for excellent vibration dampening. Permanently sealed and lubricated grinding spindle.
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Workhead:
Monobloc work spindle housing with permanently sealed and lubricated work spindle bearings.Work spindle fitted with collet chuck for use of high precision collets. Workhead located on an elongated swivel plate provided with a wide-spaced scale for angular adjustment. The workhead is adjustable along the swivel plate to clamp each valve on that part of the valve stem which normally travels in the valve guide. The workhead table is mounted on guide bars to reduce friction for smooth traversing of the valve face across the grinding wheel. Oscillating equipment for automated power traverse of the workhead table is available as an option to assure efficient stock removal and superior finish. The stroke of oscillation is infinitely adjustable.
Steady:
A selfcentering steady (a VKM 2.3 A and VKM 2.3M standard) fits on the swivel plate for additional support of long stem valves. The combination of collet chucking and steadying ensures perfect alignment of long valves.
Coolant system:
Coolant is delivered to the grinding site by an industrial type flood pump.
The baffled coolant tank is housed in the machine base and can be drawn out for ease of cleaning.
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Specifications:
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VKM 2A
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VKM 2.3A
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VKM 2.3M
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Capacity:
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Valve stem diam.
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mm
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3,2-22,5
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3,2-25
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6,4-32
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Max. valve head diam.
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mm
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200
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200
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200
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Valvle seat angle
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deg.
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19° - 47°
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19° - 47°
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19° - 47°
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Grinding spindle:
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.
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.
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.
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Wheel diam.
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mm
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175
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175
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175
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Wheel width
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mm
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25
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25
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25
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Speed at 50 cycles
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rpm
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2790
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2790
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2790
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Drive motor
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W
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370
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370
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370
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Work spindle:
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.
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.
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Speed (Standard)
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rpm
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50
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50
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50
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Speed range (Option)
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rpm
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5-85
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5-85
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5-85
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Coolantsystem:
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.
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Coolant capacity
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l
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5
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5
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5
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Electrical system:
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Supply voltage
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V
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380 - 440
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380 - 440
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380 - 440
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(3 ph. 50/60 Hz)
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or V
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220 - 254
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220 - 254
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220 - 254
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Control voltage
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V
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24
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24
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24
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Max. consumption
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W
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450
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450
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450
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Dimensions and weight:
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.
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.
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Length
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mm
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800
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800
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800
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Width
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mm
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550
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550
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550
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Height
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mm
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450
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450
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450
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Net weight
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approx. kg
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150
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155
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155
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