{"id":2854,"date":"2026-10-29T11:19:38","date_gmt":"2026-10-29T10:19:38","guid":{"rendered":"https:\/\/www.ludwig-hunger.de\/product-ranges\/marine\/valve-reconditioning-by-grinding\/vkm2\/"},"modified":"2026-11-13T09:41:47","modified_gmt":"2026-11-13T08:41:47","slug":"vkm2","status":"publish","type":"page","link":"https:\/\/www.ludwig-hunger.de\/en\/product-ranges\/marine\/valve-reconditioning-by-grinding\/vkm2\/","title":{"rendered":"VKM2"},"content":{"rendered":"\t\t
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\n\t\t\t\t\t\t\n\t\t\t\t\t\t\tVKM2\t\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/h2>\n\t\t\t\t\n\t\t\t\t\n\t\t\t<\/div>\n\t\t\t\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\n<\/div>\n
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Home<\/a> \/<\/span> Page<\/span><\/div>\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\n<\/div>\n\n<\/div>\n\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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VKM2\n<\/h2>\t\t\t\t<\/div>\n\t\t
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Valve grinding machine <\/b>for valves with stem diameters up to 32.5mm<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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Technical Data:<\/h3><\/td>

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Operating range:<\/b><\/td> <\/td><\/tr>
Valve stem \u00d8 <\/td>6 – 32.5mm <\/td> <\/tr>
Max. valve head \u00d8<\/td>200mm<\/td><\/tr>
Valve seat angle<\/td>19\u00b0- 47\u00b0<\/td><\/tr>
Grinding spindle:<\/b><\/td> <\/td><\/tr>
Grinding wheel \u00d8 <\/td>175mm<\/td><\/tr>
Speed at 50 Hz<\/td>2790 rpm<\/td><\/tr>
Workhead spindle:<\/b><\/td> <\/td><\/tr>
Speed, standard<\/td>50 <\/sup> rpm<\/td><\/tr>
<\/b>Speed, option<\/td>5-60 rpm<\/td><\/tr>
<\/b>Coolant system:<\/b><\/td> <\/td><\/tr>
Capacity<\/td>5 liters<\/td><\/tr>
Electrical equipment:<\/b><\/td> <\/td><\/tr>
Supply voltage<\/td>400V\u00b110%<\/td><\/tr>
(3ph 50\/60Hz) or<\/td>230V\u00b110%<\/td><\/tr>
Power consumption<\/td>0.5kW<\/td><\/tr>
Dimensions:<\/b><\/td> <\/td><\/tr>
Length<\/td>800mm<\/td><\/tr>
Width<\/td>550mm<\/td><\/tr>
Height<\/td>450mm<\/td><\/tr>
Weight:<\/b><\/td> <\/td><\/tr>
Net weight<\/td>155kg<\/td><\/tr><\/tbody><\/table>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t
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Features:<\/h3>

Machine bed:<\/b>Heavily ribbed cast iron body with integrated guideway for the grinding wheelhead.<\/p>

Grinding wheelhead:<\/b>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.<\/p>

Workhead and steady rest:<\/b>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.<\/p>

Automatic oscillation: <\/b>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.<\/p>

Dressing device:<\/b>The dressing device is mounted on the workpiece slide and is simply pushed into the dressing position when required.<\/p>

Coolant system:<\/b>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.<\/p>

Electrical equipment:<\/b>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.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\n<\/div>\n

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Download VKM2 Brochure\n\n<\/h3>\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t<\/path><\/svg>\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\tDownload PDF<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Related Content<\/h2>\t\t\t\t<\/div>\n\t\t
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Retro-Fit action<\/h3>\t\t\t\t<\/div>\n\t\t\t\t
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\"\"With the Retrofit Promotion from Hunger, you can get your “old” machine ready for daily repair work again: (Applies to VDS2.3E, VDS2.5E, and VD4E) Your Advantages: Flexible supply voltage from 100-300VAC Price savings of up to 46% compared to a new unit More powerful motors and more efficient control result in 50% higher power transmission during turning Ecologically sensible, as only the necessary parts are replaced.View details<\/a><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Clamping Cylinder Heads\n<\/h3>\t\t\t\t<\/div>\n\t\t\t\t
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\"\"Application: Heavy cylinder heads from large diesel engines can be clamped securely and easily on the extremely robust WV assembly stand for maintenance and repair work.View details<\/a><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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VD4HD<\/h3>\t\t\t\t<\/div>\n\t\t\t\t
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\"\"Valve seat turning machine for seat diameters 60 – 230mm.View details<\/a><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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High-Pressure Hydraulic Power Unit HD1500\n<\/h3>\t\t\t\t<\/div>\n\t\t\t\t
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\"\"Application: The compressed air-operated HD1500 high-pressure hydraulic unit serves as a mobile drive unit for hydraulic tools, especially for tools used for tightening and loosening tension joints on large diesel engines.View details<\/a><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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High-Pressure Hydraulic Power Unit HD2500\n<\/h3>\t\t\t\t<\/div>\n\t\t\t\t
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\"\"Application: The compressed air-driven HD2500 high-pressure hydraulic power unit serves as a mobile drive unit for hydraulic tools, particularly for tools used to tighten and loosen tensioned connections on large diesel engines.View details<\/a><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Injector Testing<\/h3>\t\t\t\t<\/div>\n\t\t\t\t
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\"\"Field of application: Large diesel engine fuel injectors can be tested and, if necessary, serviced on the NTS nozzle test stand. The spray pattern and atomization quality of the injected test fluid, as well as the tight seal of the needle seat, are inspected.View details<\/a><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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SHM Stationary Honing Machine<\/h3>\t\t\t\t<\/div>\n\t\t\t\t
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\"\"Field of application: Cylinder liners with a bore diameter of 150 to 640 mm can be honed using the SHM stationary honing machine.View details<\/a><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\n<\/div>\n\n<\/div>\n\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"

VKM2 Home \/ Seite \/ VKM2 VKM2 Valve grinding machine for valves with stem diameters up to 32.5mm Technical Data: Operating range: Valve stem \u00d8 6 – 32.5mm Max. valve head \u00d8 200mm Valve seat angle 19\u00b0- 47\u00b0 Grinding spindle: Grinding wheel \u00d8 175mm Speed at 50 Hz 2790 rpm Workhead spindle: Speed, standard 50 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":2729,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_eb_attr":"","_templately_pack_id":"","_templately_imported_at":"","_templately_source":"","_templately_import_session_id":"","site-sidebar-layout":"no-sidebar","site-content-layout":"","ast-site-content-layout":"full-width-container","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"disabled","ast-breadcrumbs-content":"","ast-featured-img":"disabled","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"class_list":["post-2854","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.ludwig-hunger.de\/en\/wp-json\/wp\/v2\/pages\/2854","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ludwig-hunger.de\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.ludwig-hunger.de\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.ludwig-hunger.de\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ludwig-hunger.de\/en\/wp-json\/wp\/v2\/comments?post=2854"}],"version-history":[{"count":2,"href":"https:\/\/www.ludwig-hunger.de\/en\/wp-json\/wp\/v2\/pages\/2854\/revisions"}],"predecessor-version":[{"id":3164,"href":"https:\/\/www.ludwig-hunger.de\/en\/wp-json\/wp\/v2\/pages\/2854\/revisions\/3164"}],"up":[{"embeddable":true,"href":"https:\/\/www.ludwig-hunger.de\/en\/wp-json\/wp\/v2\/pages\/2729"}],"wp:attachment":[{"href":"https:\/\/www.ludwig-hunger.de\/en\/wp-json\/wp\/v2\/media?parent=2854"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}