{"id":2857,"date":"2026-10-29T11:21:54","date_gmt":"2026-10-29T10:21:54","guid":{"rendered":"https:\/\/www.ludwig-hunger.de\/product-ranges\/marine\/valve-reconditioning-by-grinding\/vkm3-1\/"},"modified":"2026-11-13T09:39:32","modified_gmt":"2026-11-13T08:39:32","slug":"vkm3-1","status":"publish","type":"page","link":"https:\/\/www.ludwig-hunger.de\/en\/product-ranges\/marine\/valve-reconditioning-by-grinding\/vkm3-1\/","title":{"rendered":"VKM3.1"},"content":{"rendered":"\t\t
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\n\t\t\t\t\t\t\n\t\t\t\t\t\t\tVKM3.1\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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VKM3.1\n\n<\/h2>\t\t\t\t<\/div>\n\t\t
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Valve grinding machine <\/strong>for valves with stem diameters up to 32.5 mm<\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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Technical Specifications:<\/h3>\n <\/td>\n

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Working range:<\/b>\n <\/td>\n  \n <\/td>\n\n<\/tr>\n\n
Valve stem diameter \n <\/td>\n 5 – 32.5 mm\n <\/td> \n\n<\/tr>\n\n
Max. valve head diameter\n <\/td>\n 200 mm\n <\/td> \n\n<\/tr>\n\n
Valve seat angle\n <\/td>\n 18\u00b0\u2013 47\u00b0\n <\/td> \n\n<\/tr>\n\n
Grinding spindle:<\/b>\n <\/td>\n  \n <\/td>\n\n<\/tr>\n\n
Grinding wheel diameter \n <\/td>\n 175 mm\n <\/td> \n\n<\/tr>\n\n
Speed at 50 Hz\n <\/td>\n 2,790 rpm\n <\/td> \n\n<\/tr>\n\n
Workpiece spindle:<\/b>\n <\/td>\n  \n <\/td>\n\n<\/tr>\n\n
Speed\n <\/td>\n 25 rpm\n <\/td> \n\n<\/tr>\n\n
 <\/b>Coolant system:<\/b>\n <\/td>\n  \n <\/td>\n\n<\/tr>\n\n
Capacity\n <\/td>\n 5 liters\n <\/td> \n\n<\/tr>\n\n
Electrical Equipment:<\/b>\n <\/td>\n  \n <\/td>\n\n<\/tr>\n\n
Supply voltage\n <\/td>\n 400 V \u00b110%\n <\/td> \n\n<\/tr>\n\n
(3ph 50\/60 Hz) or\n <\/td>\n 230 V \u00b110%\n <\/td> \n\n<\/tr>\n\n
Power consumption\n <\/td>\n 0.6 kW\n <\/td> \n\n<\/tr>\n\n
Dimensions:<\/b>\n <\/td>\n  \n <\/td>\n\n<\/tr>\n\n
Length\n <\/td>\n 800 mm\n <\/td> \n\n<\/tr>\n\n
Width\n <\/td>\n 550 mm\n <\/td> \n\n<\/tr>\n\n
Height\n <\/td>\n 500 mm\n <\/td> \n\n<\/tr>\n\n
Weight:<\/b>\n <\/td>\n  \n <\/td>\n\n<\/tr>\n\n
Net weight\n <\/td>\n 115 kg\n <\/td> \n\n<\/tr>\n\n<\/table>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t
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Features:<\/h3>

Machine bed:<\/b>Box-shaped cast iron body with integrated guideway for the workpiece headstock.<\/p>

Grinding spindle:<\/b>The maintenance-free motor grinding spindle is mounted on a swivel plate for movement.The grinding angle corresponding to the valve seat angle is set by pivoting the swivel plate.<\/p>

Workpiece headstock:<\/b>Monolithic cast iron body with maintenance-free bearings for the workpiece spindle.Valves are clamped using collets.The workpiece headstock is movable on the bed guideway and can therefore always be set up so that each valve can be clamped in the area of the valve stem that is normally guided in the valve guide.A feed unit is assigned to the workpiece headstock, with which the workpiece headstock can be moved to provide fine adjustment for the valve.<\/p>

Self-centering steady rest:<\/b>A self-centering steady rest is provided on the bed guideway for additional support of long valves.<\/p>

Dressing device:<\/b>The dressing device is attached to 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 via a regulating valve.<\/p>

Electrical equipment:<\/b>Separate motors are provided for the grinding spindle, the workpiece spindle, and the coolant pump.The switching elements for the motors are located on the machine bed.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\n<\/div>\n

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Download VKM3.1 Brochure\n\n<\/h3>\t\t\t\t<\/div>\n\t\t\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 – 230 mmView 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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\"\"Field of Application: The air-operated HD2500 high-pressure hydraulic power unit serves as a mobile drive unit for hydraulic tools, particularly for tools used to tighten and loosen bolted 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 HD1500\n<\/h3>\t\t\t\t<\/div>\n\t\t\t\t
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\"\"Field of Application: The air-operated HD1500 high-pressure hydraulic power unit serves as a mobile drive unit for hydraulic tools, particularly for tools used to tighten and loosen bolted 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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Testing Injection Nozzles<\/h3>\t\t\t\t<\/div>\n\t\t\t\t
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\"\"Application: The NTS nozzle test stand can be used to test and, if necessary, maintain the injection nozzles of large diesel engines. The shape and degree of atomization of the injected test fluid as well as the tightness of the needle seat are checked.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: The SHM stationary honing machine can hone cylinder liners with a bore diameter of 150 to 640 mm.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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HMB Honing Machine Base<\/h3>\t\t\t\t<\/div>\n\t\t\t\t
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\"\"Field of Application: A stationary honing machine base allows removed cylinder liners of large diesel engines to be honed in the workshop using the corresponding mobile PHM honing machine. The HMB 340 honing machine base is designed for the PHM 340 honing machine. The HMB 640 honing machine base is designed for the PHM 640 honing machine.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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PHM Mobile Honing Machine\n<\/h3>\t\t\t\t<\/div>\n\t\t\t\t
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\"\"Field of Application: With the PHM mobile honing machine, cylinder liners of large diesel engines can be honed while installed in the crankcase. The stationary HMB honing machine base is required for honing removed cylinder liners.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":"

VKM3.1 Home \/ Seite VKM3.1 Valve grinding machine for valves with stem diameters up to 32.5 mm Technical Specifications:   Working range:   Valve stem diameter 5 – 32.5 mm Max. valve head diameter 200 mm Valve seat angle 18\u00b0\u2013 47\u00b0 Grinding spindle:   Grinding wheel diameter 175 mm Speed at 50 Hz 2,790 rpm […]<\/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-2857","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.ludwig-hunger.de\/en\/wp-json\/wp\/v2\/pages\/2857","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=2857"}],"version-history":[{"count":2,"href":"https:\/\/www.ludwig-hunger.de\/en\/wp-json\/wp\/v2\/pages\/2857\/revisions"}],"predecessor-version":[{"id":3157,"href":"https:\/\/www.ludwig-hunger.de\/en\/wp-json\/wp\/v2\/pages\/2857\/revisions\/3157"}],"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=2857"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}