{"id":2860,"date":"2026-10-29T11:24:45","date_gmt":"2026-10-29T10:24:45","guid":{"rendered":"https:\/\/www.ludwig-hunger.de\/product-ranges\/marine\/valve-reconditioning-by-grinding\/vkm3-4\/"},"modified":"2026-11-10T14:20:49","modified_gmt":"2026-11-10T13:20:49","slug":"vkm3-4","status":"publish","type":"page","link":"https:\/\/www.ludwig-hunger.de\/en\/product-ranges\/marine\/valve-reconditioning-by-grinding\/vkm3-4\/","title":{"rendered":"VKM3.4"},"content":{"rendered":"\t\t
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\n\t\t\t\t\t\t\n\t\t\t\t\t\t\tVKM3.4\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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VKM3.4\n\n<\/h2>\t\t\t\t<\/div>\n\t\t
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Valve refacing machine <\/strong>for valves with stem diameters up to 40 mm<\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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<\/a><\/p>

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

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Working Range:<\/b><\/td> <\/td><\/tr>
Valve stem \u00d8 <\/td>9 – 40 mm<\/td><\/tr>
Max. valve head \u00d8<\/td>200 mm <\/td> <\/tr>
Valve seat angle<\/td>18\u00b0 – 47\u00b0<\/td><\/tr>
Grinding Spindle:<\/b><\/td> <\/td><\/tr>
Grinding wheel \u00d8 <\/td>175 mm<\/td><\/tr>
Speed at 50 Hz <\/td>2,790 rpm<\/td><\/tr>
Workpiece Spindle:<\/b><\/td> <\/td><\/tr>
Speed<\/td>35 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>400 V \u00b1 10%<\/td><\/tr>
(3ph 50\/60 Hz) or<\/td>230 V \u00b1 10%<\/td><\/tr>
Power consumption<\/td>0.6 kW<\/td><\/tr>
Dimensions:<\/b><\/td> <\/td><\/tr>
Length<\/td>800 mm<\/td><\/tr>
Width<\/td>550 mm<\/td><\/tr>
Height<\/td>500 mm<\/td><\/tr>
Weight:<\/b><\/td> <\/td><\/tr>
Net weight<\/td>120 kg<\/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>Box-section cast iron body with integrated guideway for the workhead.\n

Grinding spindle: <\/b>The maintenance-free motorized grinding spindle is movably mounted on a swivel plate. Setting the grinding angle to match the valve seat angle is achieved by pivoting the swivel plate.<\/p>\n

Workhead: <\/b>Monolithic cast body with maintenance-free bearings for the workpiece spindle. Clamping of the valves via collets. The workhead is movable along the bed guideway and can therefore always be positioned so that each valve can be clamped in the section of the valve stem normally guided in the valve guide. The workhead is equipped with an infeed unit, allowing the workhead to traverse for fine valve infeed.<\/p>\n

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

Dressing device:<\/b>The dressing unit is mounted on the workhead carriage and is simply slid into the dressing position when required.<\/p>\n

Coolant system:<\/b>The coolant tank, equipped with a settling basin, is housed as a slide-in unit in the machine bed. Coolant flow is adjustable via a regulating valve.<\/p>\n

Electrical equipment:<\/b>Independent motors are provided to drive the grinding spindle, the workpiece spindle, and the coolant delivery pump. The control 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 VKM3.4 Brochure\n\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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VD4HD<\/h3>\t\t\t\t<\/div>\n\t\t\t\t
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\"\"Valve seat lathe 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 Pack HD2500\n<\/h3>\t\t\t\t<\/div>\n\t\t\t\t
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\"\"Application: The pneumatically driven HD2500 high-pressure hydraulic power unit serves as a mobile drive unit for hydraulic tools, particularly for tightening and loosening bolted 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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High-Pressure Hydraulic Power Pack HD1500\n<\/h3>\t\t\t\t<\/div>\n\t\t\t\t
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\"\"Application: The pneumatically driven HD1500 high-pressure hydraulic power unit serves as a mobile drive unit for hydraulic tools, particularly for tightening and loosening bolted 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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Testing the Injection Nozzle<\/h3>\t\t\t\t<\/div>\n\t\t\t\t
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\"\"Application: The NTS nozzle test bench allows fuel injection nozzles of large diesel engines to be tested and serviced as needed. The spray pattern, degree of atomization of the injected test fluid, and needle seat tightness are verified.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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\"\"Application: With the SHM stationary honing machine, cylinder liners with bore diameters from 150 to 640 mm can be honed.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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\"\"Application: With a stationary honing machine base, removed liners of large diesel engines can 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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\"\"Application: The PHM mobile honing machine allows cylinder liners of large diesel engines to be honed in-situ inside 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":"

VKM3.4 Home \/ Product Ranges \/ Marine \/ Valve Reconditioning by Grinding \/ VKM3.4 VKM3.4 Valve refacing machine for valves with stem diameters up to 40 mm Technical Data: Working Range: Valve stem \u00d8 9 – 40 mm Max. valve head \u00d8 200 mm Valve seat angle 18\u00b0 – 47\u00b0 Grinding Spindle: Grinding wheel \u00d8 […]<\/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-2860","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.ludwig-hunger.de\/en\/wp-json\/wp\/v2\/pages\/2860","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=2860"}],"version-history":[{"count":1,"href":"https:\/\/www.ludwig-hunger.de\/en\/wp-json\/wp\/v2\/pages\/2860\/revisions"}],"predecessor-version":[{"id":2862,"href":"https:\/\/www.ludwig-hunger.de\/en\/wp-json\/wp\/v2\/pages\/2860\/revisions\/2862"}],"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=2860"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}