{"id":1736,"date":"2025-10-15T01:21:22","date_gmt":"2025-10-15T01:21:22","guid":{"rendered":"https:\/\/www.railgrindingwheel.com\/?page_id=1736"},"modified":"2026-09-08T04:26:24","modified_gmt":"2026-09-08T04:26:24","slug":"%d0%bb%d0%be%d1%80%d0%b0%d0%bc-rg400","status":"publish","type":"page","link":"https:\/\/www.railgrindingwheel.com\/ru\/%d0%b1%d0%b8%d0%b1%d0%bb%d0%b8%d0%be%d1%82%d0%b5%d0%ba%d0%b0-railgrinder\/%d0%bb%d0%be%d1%80%d0%b0%d0%bc-rg400\/","title":{"rendered":"\u0420\u0435\u043b\u044c\u0441\u043e\u0448\u043b\u0438\u0444\u043e\u0432\u0430\u043b\u044c\u043d\u044b\u0439 \u0441\u0442\u0430\u043d\u043e\u043a Loram RG400"},"content":{"rendered":"<style>\n.rgw-rg400{--navy:#082b46;--blue:#075ca8;--pale:#f2f6f8;--line:#d4e0e7;--ink:#14344b;--muted:#5d7281;color:var(--ink);font-family:Montserrat,Arial,sans-serif}.rgw-rg400 *{box-sizing:border-box}.rgw-rg400 a{color:var(--blue)}.rgw-shell{width:min(1180px,calc(100% - 36px));margin:auto}.rgw-breadcrumb{padding:16px 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minmax(260px,31%);gap:32px}@media(max-width:900px){.rgw-layout{grid-template-columns:minmax(0,1fr) minmax(260px,32%)}.rgw-aside{position:sticky}}@media(max-width:760px){.rgw-layout{grid-template-columns:1fr}.rgw-aside{position:static}}\n@media(min-width:601px){.rgw-rg400 .rgw-layout{display:grid!important;grid-template-columns:minmax(0,1fr) minmax(220px,30%)!important;gap:24px!important;align-items:start!important}.rgw-rg400 .rgw-main,.rgw-rg400 .rgw-aside{width:auto!important;max-width:none!important;float:none!important}.rgw-rg400 .rgw-aside{position:sticky!important;top:100px!important;grid-column:2!important;grid-row:1!important}}\n.rgw-rg400 .rgw-hero{color:#fff!important;background:linear-gradient(120deg,#061d31,#0a3557 72%,#075ca8)!important}.rgw-rg400 .rgw-brand{color:#8fcdf4!important}.rgw-rg400 .rgw-brand img{width:118px!important;height:48px!important;padding:8px!important;border-radius:4px!important;background:#fff!important;object-fit:contain!important}.rgw-rg400 .rgw-hero h1{color:#fff!important}.rgw-rg400 .rgw-answer{color:#d6e4ee!important}.rgw-rg400 .rgw-review{color:#9fc0d5!important}.rgw-rg400 .rgw-btn-primary{border-color:#ec6a19!important;color:#fff!important;background:#ec6a19!important}.rgw-rg400 .rgw-btn-secondary{border-color:#ffffff62!important;color:#fff!important;background:#ffffff0b!important}.rgw-rg400 .rgw-hero-media{position:relative!important;overflow:hidden!important;border:1px solid #ffffff2b!important;background:#0b2b43!important;box-shadow:0 24px 48px #0003!important}.rgw-rg400 .rgw-hero-media img{display:block!important;width:100%!important;aspect-ratio:16\/10!important;object-fit:cover!important}.rgw-rg400 .rgw-hero-media figcaption{position:absolute!important;z-index:2!important;right:16px!important;bottom:13px!important;left:16px!important;padding:0!important;color:#dbe9f1!important;font-size:10px!important;text-shadow:0 1px 4px #000!important}\n<\/style>\n<div class=\"rgw-rg400\">\n<div class=\"rgw-shell rgw-breadcrumb\"><a href=\"https:\/\/www.railgrindingwheel.com\/railgrinderlibrary\/\">Grinding Trains Library<\/a> \/ Loram \/ RG400<\/div>\n<section class=\"rgw-hero\">\n<div class=\"rgw-shell rgw-hero-grid\">\n<div>\n<div class=\"rgw-brand\"><img decoding=\"async\" data-src=\"https:\/\/www.railgrindingwheel.com\/wp-content\/uploads\/2026\/09\/loram-corporate-logo.png\" alt=\"Loram logo\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" class=\"lazyload\" style=\"--smush-placeholder-width: 1024px; --smush-placeholder-aspect-ratio: 1024\/165;\">Production rail grinding<\/div>\n<h1>Loram RG400 Rail Grinder<\/h1>\n<p class=\"rgw-answer\">The Loram RG400 is a modular production rail grinding train for heavy-haul, freight and larger commuter railways. Published configurations use 60\u2013120 grinding motors to support preventive grinding, corrective metal removal and rail-profile restoration.<\/p>\n<div class=\"rgw-review\">Last source review: 8 September 2026 \u00b7 Manufacturer data<\/div>\n<div class=\"rgw-actions\"><a class=\"rgw-btn rgw-btn-primary\" href=\"#specifications\">View specifications<\/a><a class=\"rgw-btn rgw-btn-secondary\" href=\"#wheel-reference\">View grinding wheel<\/a><\/div>\n<\/div>\n<figure class=\"rgw-hero-media\"><img decoding=\"async\" data-src=\"https:\/\/www.railgrindingwheel.com\/wp-content\/uploads\/2025\/10\/RG401-NS-Picahontas-District-1-scaled-1.jpg\" alt=\"Loram RG401 production rail grinder crossing the Picahontas District bridge\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" class=\"lazyload\" style=\"--smush-placeholder-width: 1080px; --smush-placeholder-aspect-ratio: 1080\/720;\"><figcaption>RG401, an RG400 Series vehicle. Individual vehicle numbers and delivered configurations vary.<\/figcaption><\/figure>\n<\/div>\n<\/section>\n<div class=\"rgw-shell rgw-facts\" aria-label=\"RG400 quick facts\">\n<div><small>Grinding motors<\/small><strong>60\u2013120<\/strong><\/div>\n<div><small>Grinding speed<\/small><strong>5\u201332 km\/h<\/strong><\/div>\n<div><small>Track gauge<\/small><strong>1,000\u20131,600 mm<\/strong><\/div>\n<div><small>Machine class<\/small><strong>Production grinding<\/strong><\/div>\n<\/div>\n<section class=\"rgw-body\">\n<div class=\"rgw-shell rgw-layout\"><main class=\"rgw-main\"><\/p>\n<nav class=\"rgw-toc\" aria-label=\"On this page\"><strong>On this page<\/strong><a href=\"#overview\">Overview<\/a><a href=\"#gallery\">Gallery<\/a><a href=\"#specifications\">Specifications<\/a><a href=\"#system\">Grinding system<\/a><a href=\"#applications\">Applications<\/a><a href=\"#video\">Video<\/a><a href=\"#wheel-reference\">Wheel product<\/a><a href=\"#faq\">FAQ<\/a><\/nav>\n<section id=\"overview\" class=\"rgw-section\"><span class=\"rgw-kicker\">Model overview<\/span><\/p>\n<h2>What is the Loram RG400?<\/h2>\n<p>The RG400 is Loram\u2019s high-output production grinding platform. A consist can be configured with multiple grinding modules and auxiliary cars for long mainline work windows. Independently controlled electric motors position abrasive stones across the rail head while measurement and control systems support the planned profile and metal-removal programme.<\/p>\n<p class=\"rgw-note\">This page documents the RG400 model itself. For a comparison of Loram\u2019s production, specialty and transit families, see the <a href=\"https:\/\/www.railgrindingwheel.com\/loram-rail-grinding\/\">Loram rail grinding guide<\/a>.<\/p>\n<\/section>\n<section id=\"gallery\" class=\"rgw-section\"><span class=\"rgw-kicker\">Reference photographs<\/span><\/p>\n<h2>Loram RG400 Series gallery<\/h2>\n<p>The gallery shows individual RG400 Series vehicles identified as RG401, RG405 and RG422.<\/p>\n<div class=\"rgw-gallery\"><a href=\"https:\/\/www.railgrindingwheel.com\/wp-content\/uploads\/2025\/10\/Loram_RG401-e1781748387282.jpg\"><img decoding=\"async\" data-src=\"https:\/\/www.railgrindingwheel.com\/wp-content\/uploads\/2025\/10\/Loram_RG401-e1781748387282.jpg\" alt=\"Loram RG401 rail grinding train\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" class=\"lazyload\" style=\"--smush-placeholder-width: 1033px; --smush-placeholder-aspect-ratio: 1033\/583;\"><\/a><a href=\"https:\/\/www.railgrindingwheel.com\/wp-content\/uploads\/2025\/10\/Loram_RG405-e1761582857499.jpg\"><img decoding=\"async\" data-src=\"https:\/\/www.railgrindingwheel.com\/wp-content\/uploads\/2025\/10\/Loram_RG405-e1761582857499.jpg\" alt=\"Loram RG405 rail grinding train\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" class=\"lazyload\" style=\"--smush-placeholder-width: 1002px; --smush-placeholder-aspect-ratio: 1002\/680;\"><\/a><a href=\"https:\/\/www.railgrindingwheel.com\/wp-content\/uploads\/2025\/10\/Loram_RG405_2.jpg\"><img decoding=\"async\" data-src=\"https:\/\/www.railgrindingwheel.com\/wp-content\/uploads\/2025\/10\/Loram_RG405_2.jpg\" alt=\"Loram RG405 in railway service\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" class=\"lazyload\" style=\"--smush-placeholder-width: 1080px; --smush-placeholder-aspect-ratio: 1080\/737;\"><\/a><a href=\"https:\/\/www.railgrindingwheel.com\/wp-content\/uploads\/2025\/10\/LORAM_RG422_3a.jpg\"><img decoding=\"async\" data-src=\"https:\/\/www.railgrindingwheel.com\/wp-content\/uploads\/2025\/10\/LORAM_RG422_3a.jpg\" alt=\"Loram RG422 rail grinder\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" class=\"lazyload\" style=\"--smush-placeholder-width: 1080px; --smush-placeholder-aspect-ratio: 1080\/720;\"><\/a><a href=\"https:\/\/www.railgrindingwheel.com\/wp-content\/uploads\/2025\/10\/RG-401.jpg\"><img decoding=\"async\" data-src=\"https:\/\/www.railgrindingwheel.com\/wp-content\/uploads\/2025\/10\/RG-401.jpg\" alt=\"Loram RG401 production rail grinder\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" class=\"lazyload\" style=\"--smush-placeholder-width: 1080px; --smush-placeholder-aspect-ratio: 1080\/810;\"><\/a><a href=\"https:\/\/www.railgrindingwheel.com\/wp-content\/uploads\/2025\/10\/RG401-NS-Picahontas-District-1-scaled-1.jpg\"><img decoding=\"async\" data-src=\"https:\/\/www.railgrindingwheel.com\/wp-content\/uploads\/2025\/10\/RG401-NS-Picahontas-District-1-scaled-1.jpg\" alt=\"Loram RG401 on track\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" class=\"lazyload\" style=\"--smush-placeholder-width: 1080px; --smush-placeholder-aspect-ratio: 1080\/720;\"><\/a><\/div>\n<\/section>\n<section id=\"specifications\" class=\"rgw-section\"><span class=\"rgw-kicker\">Manufacturer data<\/span><\/p>\n<h2>RG400 key specifications<\/h2>\n<p>Values below are taken from Loram\u2019s published RG400 material. Delivered configurations and working results can vary, so the individual machine documentation remains the controlling reference.<\/p>\n<div class=\"rgw-spec\">\n<div class=\"rgw-spec-row\"><span>Specification<\/span><span>Published value<\/span><span>Qualification<\/span><\/div>\n<div class=\"rgw-spec-row\"><b>Length<\/b><span>500\u2013700 ft (152\u2013213 m)<\/span><span>Configuration dependent; auxiliary cars excluded<\/span><\/div>\n<div class=\"rgw-spec-row\"><b>Width<\/b><span>10.8 ft (3.3 m)<\/span><span>Published machine width<\/span><\/div>\n<div class=\"rgw-spec-row\"><b>Height<\/b><span>15.5 ft (4.7 m)<\/span><span>Published machine height<\/span><\/div>\n<div class=\"rgw-spec-row\"><b>Maximum axle weight<\/b><span>25.4\u201335.9 ton (23.0\u201332.5 tonne)<\/span><span>Configuration dependent<\/span><\/div>\n<div class=\"rgw-spec-row\"><b>Grinding motors<\/b><span>60\u2013120; 30 hp (22.4 kW) each<\/span><span>Modular configuration<\/span><\/div>\n<div class=\"rgw-spec-row\"><b>Grinding speed<\/b><span>3\u201320 mph (5\u201332 km\/h)<\/span><span>Typical; application dependent<\/span><\/div>\n<div class=\"rgw-spec-row\"><b>Travel speed<\/b><span>Up to 60 mph (100 km\/h)<\/span><span>Self-propelled<\/span><\/div>\n<div class=\"rgw-spec-row\"><b>Gradeability<\/b><span>Up to 4%<\/span><span>Configuration dependent<\/span><\/div>\n<div class=\"rgw-spec-row\"><b>Minimum grinding radius<\/b><span>16\u00b0 curve (110 m radius)<\/span><span>Published reference<\/span><\/div>\n<div class=\"rgw-spec-row\"><b>Minimum travel radius<\/b><span>22\u00b0 curve (80 m radius)<\/span><span>Published reference<\/span><\/div>\n<div class=\"rgw-spec-row\"><b>Grinding angles<\/b><span>70\u00b0 gauge to 30\u00b0 field<\/span><span>100\u00b0 range<\/span><\/div>\n<div class=\"rgw-spec-row\"><b>Track gauge<\/b><span>39.4\u201363 in (1,000\u20131,600 mm)<\/span><span>Configuration dependent<\/span><\/div>\n<\/div>\n<div class=\"rgw-source-line\">Sources: <a href=\"https:\/\/loram.com\/maintenance-of-way\/rail-maintenance\/production-rail-grinding\/rg400\/\">Loram RG400 product page<\/a> and <a href=\"https:\/\/loram.com\/wp-content\/uploads\/SpecSheet_RG400.pdf\">RG400 specification sheet<\/a>.<\/div>\n<\/section>\n<section id=\"system\" class=\"rgw-section\"><span class=\"rgw-kicker\">Operating principle<\/span><\/p>\n<h2>How the RG400 grinding system works<\/h2>\n<div class=\"rgw-process\">\n<div><b>01<\/b><\/p>\n<h3>Measure<\/h3>\n<p>Rail measurement and vision systems establish the existing condition and help verify grinding quality.<\/p>\n<\/div>\n<div><b>02<\/b><\/p>\n<h3>Plan<\/h3>\n<p>The grinding programme defines target profile, motor angles, metal removal and the required passes.<\/p>\n<\/div>\n<div><b>03<\/b><\/p>\n<h3>Grind<\/h3>\n<p>Electric grinding motors apply abrasive stones across the gauge, crown and field sides of the rail head.<\/p>\n<\/div>\n<div><b>04<\/b><\/p>\n<h3>Verify<\/h3>\n<p>Post-grind measurements are used to check the achieved profile against the programme requirements.<\/p>\n<\/div>\n<\/div>\n<\/section>\n<section id=\"applications\" class=\"rgw-section\"><span class=\"rgw-kicker\">Use cases<\/span><\/p>\n<h2>Typical RG400 applications<\/h2>\n<div class=\"rgw-usecases\">\n<div><strong>Preventive grinding<\/strong><\/p>\n<p>Frequent controlled treatment intended to manage surface damage before deeper correction is required.<\/p>\n<\/div>\n<div><strong>Corrective metal removal<\/strong><\/p>\n<p>Multiple-pass work for established defects and profile deviation, subject to the grinding programme.<\/p>\n<\/div>\n<div><strong>Heavy-haul and freight corridors<\/strong><\/p>\n<p>High-output work on long mainline sections where available track time is limited.<\/p>\n<\/div>\n<div><strong>Large commuter networks<\/strong><\/p>\n<p>Production grinding where clearance, gauge and axle-load requirements suit the delivered configuration.<\/p>\n<\/div>\n<\/div>\n<\/section>\n<section class=\"rgw-section\"><span class=\"rgw-kicker\">Series identification<\/span><\/p>\n<h2>RG400 configurations and vehicle numbers<\/h2>\n<p>Photographs may identify machines such as RG401, RG405 or RG422. These markings can refer to individual RG400 Series vehicles or fleet configurations; they are not, by themselves, a complete technical specification. Use the equipment plate, serial information and operator documentation when confirming consumables.<\/p>\n<\/section>\n<section id=\"video\" class=\"rgw-section\"><span class=\"rgw-kicker\">Video reference<\/span><\/p>\n<h2>Loram RG400 Series video<\/h2>\n<p>This video provides a visual reference for the RG400 Series in operation. Operating results and machine configuration vary by railway, work programme and delivered equipment.<\/p>\n<p><a class=\"rgw-video\" href=\"https:\/\/www.youtube.com\/watch?v=J74CJK84SjY\"><img decoding=\"async\" data-src=\"https:\/\/www.railgrindingwheel.com\/wp-content\/uploads\/2025\/10\/Loram_RG401-e1781748387282.jpg\" alt=\"Loram RG400 Series video preview\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" class=\"lazyload\" style=\"--smush-placeholder-width: 1033px; --smush-placeholder-aspect-ratio: 1033\/583;\"><span>Watch the RG400 Series rail grinder<\/span><\/a><\/section>\n<section id=\"wheel-reference\" class=\"rgw-wheel\">\n<header class=\"rgw-wheel-intro\"><span class=\"rgw-kicker\">Grinding wheel reference<\/span><\/p>\n<h2>260 mm \/ 10-inch rail grinding wheel<\/h2>\n<p>A resin-bond zirconia grinding wheel produced for high-load rail grinding applications. This nominal wheel size is referenced for Loram RG and RGI systems, subject to verification against the individual machine and installed grinding head.<\/p>\n<\/header>\n<div class=\"rgw-wheel-body\">\n<figure class=\"rgw-wheel-photo\"><img decoding=\"async\" data-src=\"https:\/\/www.railgrindingwheel.com\/wp-content\/smush-webp\/2026\/09\/loram-260mm-10-inch-rail-grinding-wheel-scaled.png.webp\" alt=\"260 mm 10-inch resin-bond zirconia rail grinding wheel\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" class=\"lazyload\" style=\"--smush-placeholder-width: 810px; --smush-placeholder-aspect-ratio: 810\/1080;\" data-smush-webp-fallback=\"{&quot;data-src&quot;:&quot;https:\\\/\\\/www.railgrindingwheel.com\\\/wp-content\\\/uploads\\\/2026\\\/09\\\/loram-260mm-10-inch-rail-grinding-wheel-scaled.png&quot;}\"><\/figure>\n<div class=\"rgw-wheel-copy\">\n<dl class=\"rgw-wheel-specs\">\n<div>\n<dt>Nominal size<\/dt>\n<dd>260 mm \/ 10 inches<\/dd>\n<\/div>\n<div>\n<dt>Abrasive<\/dt>\n<dd>Zirconia alumina<\/dd>\n<\/div>\n<div>\n<dt>Bond<\/dt>\n<dd>Resin bond<\/dd>\n<\/div>\n<div>\n<dt>Maximum speed<\/dt>\n<dd>50 m\/s<\/dd>\n<\/div>\n<\/dl>\n<div class=\"rgw-caution\">Reference product only. Confirm the complete dimensions, wheel marking, mounting interface, maximum RPM and approved drawing before ordering.<\/div>\n<div class=\"rgw-actions\"><a class=\"rgw-btn rgw-btn-primary\" href=\"https:\/\/www.railgrindingwheel.com\/rail-grinding-train-wheel\/260x90x154\/\">View complete product details<\/a><a class=\"rgw-btn rgw-btn-secondary\" href=\"https:\/\/www.railgrindingwheel.com\/contactus\/\">Request specification review<\/a><\/div>\n<\/div>\n<\/div>\n<\/section>\n<section class=\"rgw-section\"><span class=\"rgw-kicker\">RFQ checklist<\/span><\/p>\n<h2>Information required before ordering<\/h2>\n<div class=\"rgw-checklist\">\n<div><b>01<\/b>Machine model and vehicle or serial information<\/div>\n<div><b>02<\/b>Existing wheel marking and complete dimensions<\/div>\n<div><b>03<\/b>Bore, thread or mounting-interface details<\/div>\n<div><b>04<\/b>Maximum permitted RPM and grinding-head configuration<\/div>\n<div><b>05<\/b>Rail condition and intended grinding application<\/div>\n<div><b>06<\/b>Quantity, destination country and required delivery date<\/div>\n<\/div>\n<\/section>\n<section id=\"faq\" class=\"rgw-section rgw-faq\"><span class=\"rgw-kicker\">Buyer questions<\/span><\/p>\n<h2>Loram RG400 FAQ<\/h2>\n<details>\n<summary>What is the Loram RG400?<\/summary>\n<p>It is a modular high-output production rail grinding train designed for heavy-haul, freight and larger commuter railways.<\/p>\n<\/details>\n<details>\n<summary>How fast can an RG400 grind rail?<\/summary>\n<p>Loram publishes a grinding speed range of 3\u201320 mph (5\u201332 km\/h), depending on the application and delivered configuration.<\/p>\n<\/details>\n<details>\n<summary>How many grinding stones does the RG400 use?<\/summary>\n<p>Published modular configurations use 60\u2013120 grinding motors and stones.<\/p>\n<\/details>\n<details>\n<summary>What grinding wheel size fits the Loram RG400?<\/summary>\n<p>A 260 mm or 10-inch wheel is a useful nominal reference for some Loram systems. Confirm the complete wheel dimensions, mounting interface, RPM and machine documentation before ordering.<\/p>\n<\/details>\n<details>\n<summary>Are RG401, RG405 and RG422 separate specifications?<\/summary>\n<p>They are shown here as individual RG400 Series vehicles or fleet configurations. A vehicle number alone is not a complete technical specification.<\/p>\n<\/details>\n<\/section>\n<section class=\"rgw-references\">\n<h2>References<\/h2>\n<ol>\n<li><a href=\"https:\/\/loram.com\/maintenance-of-way\/rail-maintenance\/production-rail-grinding\/rg400\/\">Loram RG400 product page<\/a> \u2014 manufacturer overview and published machine data.<\/li>\n<li><a href=\"https:\/\/loram.com\/wp-content\/uploads\/SpecSheet_RG400.pdf\">Loram RG400 specification sheet<\/a> \u2014 manufacturer technical specifications.<\/li>\n<li><a href=\"https:\/\/www.railgrindingwheel.com\/railgrinderlibrary\/loram-rg400\/\">RG400 library entry<\/a> \u2014 reference photographs and page archive.<\/li>\n<li><a href=\"https:\/\/www.youtube.com\/watch?v=J74CJK84SjY\">RG400 Series video<\/a> \u2014 machine operation video reference.<\/li>\n<li><a href=\"https:\/\/www.railgrindingwheel.com\/rail-grinding-train-wheel\/260x90x154\/\">260 mm \/ 10-inch wheel product page<\/a> \u2014 complete wheel dimensions and product information.<\/li>\n<li><a href=\"https:\/\/www.railgrindingwheel.com\/loram-rail-grinding\/\">Loram rail grinding guide<\/a> \u2014 related models and application overview.<\/li>\n<\/ol>\n<\/section>\n<p>  <\/main><\/p>\n<aside class=\"rgw-aside\">\n<div class=\"rgw-info\">\n<div class=\"rgw-info-head\"><img decoding=\"async\" data-src=\"https:\/\/www.railgrindingwheel.com\/wp-content\/uploads\/2026\/09\/loram-corporate-logo.png\" alt=\"Loram\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" class=\"lazyload\" style=\"--smush-placeholder-width: 1024px; --smush-placeholder-aspect-ratio: 1024\/165;\"><span>Current platform<\/span><\/div>\n<dl>\n<div>\n<dt>Manufacturer<\/dt>\n<dd>Loram<\/dd>\n<\/div>\n<div>\n<dt>Model<\/dt>\n<dd>RG400 Series<\/dd>\n<\/div>\n<div>\n<dt>Machine type<\/dt>\n<dd>Production rail grinder<\/dd>\n<\/div>\n<div>\n<dt>Technology<\/dt>\n<dd>Rotary abrasive grinding<\/dd>\n<\/div>\n<div>\n<dt>Grinding motors<\/dt>\n<dd>60\u2013120<\/dd>\n<\/div>\n<div>\n<dt>Working speed<\/dt>\n<dd>5\u201332 km\/h<\/dd>\n<\/div>\n<div>\n<dt>Track gauge<\/dt>\n<dd>1,000\u20131,600 mm<\/dd>\n<\/div>\n<\/dl>\n<p><a class=\"rgw-official\" href=\"https:\/\/loram.com\/maintenance-of-way\/rail-maintenance\/production-rail-grinding\/rg400\/\">Official manufacturer source \u2197<\/a><\/div>\n<div class=\"rgw-rfq\"><span class=\"rgw-kicker\">Compatibility review<\/span><\/p>\n<h3>Have an RG400 wheel to identify?<\/h3>\n<p>Send the existing wheel marking, dimensions, mounting data and required quantity.<\/p>\n<p><a class=\"rgw-btn\" href=\"https:\/\/www.railgrindingwheel.com\/contactus\/\">Prepare an RFQ \u2192<\/a><\/div>\n<\/aside>\n<\/div>\n<\/section>\n<section class=\"rgw-related\">\n<div class=\"rgw-shell\">\n<div class=\"rgw-related-head\">\n<div><span class=\"rgw-kicker\">Related Loram entries<\/span><\/p>\n<h2>Continue exploring<\/h2>\n<\/div>\n<\/div>\n<div class=\"rgw-related-grid\"><a href=\"https:\/\/www.railgrindingwheel.com\/loram-rail-grinding\/\"><small>Loram guide<\/small><strong>Loram rail grinding<\/strong><span>Compare production, specialty and transit grinding platforms.<\/span><\/a><a href=\"https:\/\/www.railgrindingwheel.com\/rail-grinding-train-wheel\/260x90x154\/\"><small>Grinding wheel<\/small><strong>260 mm \/ 10 inch<\/strong><span>Review complete dimensions and request a specification check.<\/span><\/a><a class=\"rgw-library\" href=\"https:\/\/www.railgrindingwheel.com\/railgrinderlibrary\/\"><small>Model encyclopedia<\/small><strong>Grinding Trains Library<\/strong><span>Return to the global manufacturer and model index.<\/span><\/a><\/div>\n<\/div>\n<\/section>\n<\/div>\n<p><script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"TechArticle\",\"headline\":\"Loram RG400 Rail Grinder\",\"description\":\"Loram RG400 specifications, applications, grinding-system information and grinding-wheel selection points.\",\"image\":\"https:\/\/www.railgrindingwheel.com\/wp-content\/uploads\/2025\/10\/RG-401.jpg\",\"datePublished\":\"2025-10-15\",\"dateModified\":\"2026-09-08\",\"author\":{\"@type\":\"Organization\",\"name\":\"Jumbo Abrasives\"},\"publisher\":{\"@type\":\"Organization\",\"name\":\"Jumbo Abrasives\",\"url\":\"https:\/\/www.railgrindingwheel.com\/\"},\"mainEntityOfPage\":\"https:\/\/www.railgrindingwheel.com\/railgrinderlibrary\/loram-rg400\/\"},{\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"What is the Loram RG400?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"It is a modular high-output production rail grinding train designed for heavy-haul, freight and larger commuter railways.\"}},{\"@type\":\"Question\",\"name\":\"How fast can an RG400 grind rail?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Loram publishes a grinding speed range of 3\u201320 mph (5\u201332 km\/h), depending on the application and delivered configuration.\"}},{\"@type\":\"Question\",\"name\":\"How many grinding stones does the RG400 use?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Published modular configurations use 60\u2013120 grinding motors and stones.\"}},{\"@type\":\"Question\",\"name\":\"What grinding wheel size fits the Loram RG400?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"A 260 mm or 10-inch wheel is a useful nominal reference for some Loram systems. Confirm the complete wheel dimensions, mounting interface, RPM and machine documentation before ordering.\"}},{\"@type\":\"Question\",\"name\":\"Are RG401, RG405 and RG422 separate specifications?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"They are shown here as individual RG400 Series vehicles or fleet configurations. A vehicle number alone is not a complete technical specification.\"}}]}]}<\/script><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Grinding Trains Library \/ Loram \/ RG400 Production rail grinding Loram RG400 Rail Grinder The Loram RG400 is a modular production rail grinding train for heavy-haul, freight and larger commuter railways. Published configurations use 60\u2013120 grinding motors to support preventive grinding, corrective metal removal and rail-profile restoration. Last source review: 8 September 2026 \u00b7 Manufacturer [&hellip;]<\/p>\n","protected":false},"author":5,"featured_media":1747,"parent":1438,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"site-sidebar-layout":"no-sidebar","site-content-layout":"page-builder","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":"","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":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center 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