{"id":2233,"date":"2025-08-16T17:37:11","date_gmt":"2025-08-16T09:37:11","guid":{"rendered":"https:\/\/osenc.com\/?page_id=2233"},"modified":"2026-08-19T15:29:05","modified_gmt":"2026-08-19T07:29:05","slug":"neodymium-magnet-tubes","status":"publish","type":"page","link":"https:\/\/osenc.com\/it\/neodymium-magnet-tubes\/","title":{"rendered":"Tubi magnetici al neodimio\u00a0"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"2233\" class=\"elementor elementor-2233\" data-elementor-post-type=\"page\">\n\t\t\t\t<div class=\"elementor-element elementor-element-1f0dc43 e-con e-atomic-element e-div-block-base e-1f0dc43-0864713 \" data-id=\"1f0dc43\" data-element_type=\"e-div-block\" data-e-type=\"e-div-block\" data-interaction-id=\"1f0dc43\" data-e-type=\"e-div-block\" data-id=\"1f0dc43\">\n    \t\t<div class=\"elementor-element elementor-element-2fc0c0e elementor-widget elementor-widget-html\" data-id=\"2fc0c0e\" data-element_type=\"widget\" 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details{border:1px solid var(--line);border-radius:10px;background:#fff;margin-bottom:10px;padding:0 18px}\r\n.osenc-pdp summary{cursor:pointer;font-weight:800;color:var(--navy);padding:16px 0}\r\n.osenc-pdp details p{padding-bottom:16px}\r\n.osenc-pdp .final-cta{background:var(--navy);color:#fff;border-radius:16px;padding:34px}\r\n.osenc-pdp .final-cta h2{color:#fff}\r\n.osenc-pdp .final-cta p{color:#dce8f2}\r\n.osenc-pdp .final-cta .btn-primary{background:#fff;color:var(--navy)!important}\r\n.osenc-pdp .related{display:flex;flex-wrap:wrap;gap:12px}\r\n.osenc-pdp .related a{background:#fff;border:1px solid var(--line);padding:10px 14px;border-radius:8px;text-decoration:none}\r\n.osenc-pdp .small-note{font-size:13px;color:var(--muted)}\r\n@media(max-width:900px){.osenc-pdp .hero-grid,.osenc-pdp .quick,.osenc-pdp .diagram-grid{grid-template-columns:1fr}.osenc-pdp .facts{grid-template-columns:repeat(2,1fr)}.osenc-pdp .four{grid-template-columns:repeat(2,1fr)}.osenc-pdp .media-grid,.osenc-pdp .media-grid.three{grid-template-columns:1fr}}\r\n@media(max-width:640px){.osenc-pdp .wrap{padding:0 16px}.osenc-pdp h1{font-size:30px}.osenc-pdp h2{font-size:24px}.osenc-pdp section.section{padding:40px 0}.osenc-pdp .facts,.osenc-pdp .two,.osenc-pdp .four{grid-template-columns:1fr}.osenc-pdp .checklist{columns:1}.osenc-pdp .media-grid img,.osenc-pdp .media-grid.three img{height:auto}.osenc-pdp .btn{width:100%}}\r\n<\/style>\r\n\r\n<section class=\"osenc-pdp\">\r\n  <div class=\"wrap crumbs\"><a href=\"https:\/\/osenc.com\/\">Home<\/a> \/ <a href=\"https:\/\/osenc.com\/neodymium-magnets\/\">Neodymium Magnets<\/a> \/ Neodymium Magnet Tubes<\/div>\r\n\r\n  <div class=\"hero\">\r\n    <div class=\"wrap hero-grid\">\r\n      <div>\r\n        <div class=\"eyebrow\">Custom Sintered NdFeB Tube Magnets<\/div>\r\n        <h1>Custom Neodymium Magnet Tubes<\/h1>\r\n        <p class=\"lead\">OSENC manufactures custom sintered NdFeB tube magnets to your drawing, with controlled OD, ID, length, coating and magnetization for shaft, sensor, motor and cylindrical assembly designs.<\/p>\r\n        <p>Our current manufacturing range covers <strong>OD 1.5\u201360 mm, ID 0.4\u201350 mm and lengths from 0.3\u2013120 mm<\/strong>. Send us your OD \u00d7 ID \u00d7 H, pole direction and operating conditions, and we will review the complete geometry before quotation.<\/p>\r\n        <div class=\"chips\">\r\n          <span class=\"chip\">OD 1.5\u201360 mm<\/span><span class=\"chip\">ID 0.4\u201350 mm<\/span><span class=\"chip\">Length 0.3\u2013120 mm<\/span><span class=\"chip\">Custom Magnetization<\/span><span class=\"chip\">Coating Options<\/span>\r\n        <\/div>\r\n        <div class=\"actions\"><a class=\"btn btn-primary\" href=\"https:\/\/osenc.com\/contact-us\/\">Send OD \u00d7 ID \u00d7 H for Quote<\/a><a class=\"btn btn-secondary\" href=\"#manufacturing-range\">Check Tube Manufacturing Range<\/a><\/div>\r\n        <div class=\"facts\">\r\n          <div class=\"fact\"><b>1.5\u201360 mm<\/b><span>Outer diameter<\/span><\/div>\r\n          <div class=\"fact\"><b>0.4\u201350 mm<\/b><span>Inner diameter<\/span><\/div>\r\n          <div class=\"fact\"><b>0.3\u2013120 mm<\/b><span>Overall length<\/span><\/div>\r\n          <div class=\"fact\"><b>120 mm<\/b><span>Max magnetic-direction dimension<\/span><\/div>\r\n        <\/div>\r\n      <\/div>\r\n      <div class=\"hero-media\"><img fetchpriority=\"high\" decoding=\"async\" src=\"https:\/\/osenc.com\/wp-content\/uploads\/2022\/12\/neodymium-magnet-tubes.webp\" width=\"500\" height=\"500\" alt=\"OSENC custom neodymium magnet tube with straight through bore\" fetchpriority=\"high\" loading=\"eager\"><\/div>\r\n    <\/div>\r\n  <\/div>\r\n\r\n  <section class=\"section\">\r\n    <div class=\"wrap\">\r\n      <h2>What We Control on a Custom Tube Magnet<\/h2>\r\n      <p class=\"section-intro\">A tube magnet looks simple until the bore, wall, coating and magnetic circuit all have to work in the same assembly. We control the part as one finished component rather than treating each specification in isolation.<\/p>\r\n      <div class=\"four\">\r\n        <div class=\"card control-card\"><h3>Finished Dimensions<\/h3><p>We manufacture the OD, bore and overall length as one finished geometry, including the effect of coating on critical fit dimensions.<\/p><\/div>\r\n        <div class=\"card control-card\"><h3>Bore & Wall Geometry<\/h3><p>We review ID, wall thickness and length together because a geometry that works on a short ring may not remain practical on a long tube.<\/p><\/div>\r\n        <div class=\"card control-card\"><h3>Magnetization<\/h3><p>We match pole direction to the real magnetic circuit rather than selecting magnetization from the tube shape alone.<\/p><\/div>\r\n        <div class=\"card control-card\"><h3>Inspection<\/h3><p>We define dimensional, coating and magnetic inspection around the acceptance requirements on your drawing.<\/p><\/div>\r\n      <\/div>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"section alt\">\r\n    <div class=\"wrap\">\r\n      <h2>Neodymium Magnet Tube at a Glance<\/h2>\r\n      <div class=\"table-wrap\"><table><thead><tr><th>Item<\/th><th>OSENC Tube Magnet Supply<\/th><th>What to Put on the RFQ<\/th><\/tr><\/thead><tbody>\r\n        <tr><td><strong>Material<\/strong><\/td><td>Sintered NdFeB<\/td><td>Grade or magnetic target<\/td><\/tr>\r\n        <tr><td><strong>Geometry<\/strong><\/td><td>Elongated cylindrical magnet with a straight through bore<\/td><td>OD \u00d7 ID \u00d7 H<\/td><\/tr>\r\n        <tr><td><strong>OD<\/strong><\/td><td>1.5\u201360 mm<\/td><td>Finished OD and fit requirement<\/td><\/tr>\r\n        <tr><td><strong>ID<\/strong><\/td><td>0.4\u201350 mm<\/td><td>Finished bore requirement after coating<\/td><\/tr>\r\n        <tr><td><strong>Length<\/strong><\/td><td>0.3\u2013120 mm<\/td><td>Overall finished length<\/td><\/tr>\r\n        <tr><td><strong>Grades<\/strong><\/td><td>N35\u2013N55 plus temperature-grade families reviewed by application<\/td><td>Operating temperature<\/td><\/tr>\r\n        <tr><td><strong>Magnetization<\/strong><\/td><td>Drawing-controlled<\/td><td>Pole direction, sensor position or magnetic working faces<\/td><\/tr>\r\n        <tr><td><strong>Coating<\/strong><\/td><td>Nickel, zinc, epoxy and Parylene-based options<\/td><td>Environment and finished fit<\/td><\/tr>\r\n      <\/tbody><\/table><\/div>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"section\">\r\n    <div class=\"wrap quick\">\r\n      <div>\r\n        <h2>Quick Answer: When Should You Use a Neodymium Tube Magnet?<\/h2>\r\n        <p>Use a neodymium tube magnet when your design needs a <strong>cylindrical NdFeB magnet with a through bore<\/strong> for a shaft, sleeve, guide, cable, fastener or internal assembly clearance.<\/p>\r\n        <p>Compared with a solid cylinder, the bore creates a repeatable mechanical interface. Compared with a short ring, the longer body gives you more axial length for the assembly. The design succeeds when we control the bore, wall geometry, pole direction and actual working gap together.<\/p>\r\n      <\/div>\r\n      <div class=\"callout\"><strong>Product boundary:<\/strong> if the part is short and washer-like, review our <a href=\"https:\/\/osenc.com\/neodymium-ring-magnets\/\">neodymium ring magnets<\/a>. If you need a stainless-steel magnetic tube for ferrous separation in material flow, that belongs to magnetic-separation equipment rather than this product family.<\/div>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"section alt\" id=\"manufacturing-range\">\r\n    <div class=\"wrap diagram-grid\">\r\n      <div class=\"diagram\" aria-label=\"Neodymium magnet tube dimension diagram\">\r\n        <svg viewBox=\"0 0 520 420\" role=\"img\" aria-labelledby=\"tube-title tube-desc\" width=\"100%\" height=\"auto\">\r\n          <title id=\"tube-title\">Neodymium magnet tube dimension diagram<\/title><desc id=\"tube-desc\">Technical diagram showing outer diameter D, inner diameter d, and overall height H.<\/desc>\r\n          <defs><linearGradient id=\"g\" x1=\"0\" x2=\"1\"><stop offset=\"0\" stop-color=\"#dce6ee\"\/><stop offset=\".5\" stop-color=\"#f9fbfc\"\/><stop offset=\"1\" stop-color=\"#b8c8d5\"\/><\/linearGradient><\/defs>\r\n          <ellipse cx=\"240\" cy=\"105\" rx=\"105\" ry=\"48\" fill=\"url(#g)\" stroke=\"#123b63\" stroke-width=\"4\"\/>\r\n          <path d=\"M135 105 L135 300 C135 326 182 348 240 348 C298 348 345 326 345 300 L345 105\" fill=\"url(#g)\" stroke=\"#123b63\" stroke-width=\"4\"\/>\r\n          <ellipse cx=\"240\" cy=\"105\" rx=\"42\" ry=\"20\" fill=\"#fff\" stroke=\"#0b2542\" stroke-width=\"4\"\/>\r\n          <path d=\"M198 105 L198 299 C198 310 217 319 240 319 C263 319 282 310 282 299 L282 105\" fill=\"#f7fafc\" stroke=\"#0b2542\" stroke-width=\"3\" stroke-dasharray=\"7 6\"\/>\r\n          <line x1=\"135\" y1=\"62\" x2=\"345\" y2=\"62\" stroke=\"#1a8a9e\" stroke-width=\"3\"\/><path d=\"M135 62 l14 -8 v16z M345 62 l-14 -8 v16z\" fill=\"#1a8a9e\"\/><text x=\"240\" y=\"48\" text-anchor=\"middle\" font-size=\"24\" font-family=\"Arial\" fill=\"#0b2542\" font-weight=\"700\">D = OD<\/text>\r\n          <line x1=\"198\" y1=\"120\" x2=\"282\" y2=\"120\" stroke=\"#1a8a9e\" stroke-width=\"3\"\/><path d=\"M198 120 l12 -7 v14z M282 120 l-12 -7 v14z\" fill=\"#1a8a9e\"\/><text x=\"240\" y=\"151\" text-anchor=\"middle\" font-size=\"22\" font-family=\"Arial\" fill=\"#0b2542\" font-weight=\"700\">d = ID<\/text>\r\n          <line x1=\"392\" y1=\"105\" x2=\"392\" y2=\"348\" stroke=\"#1a8a9e\" stroke-width=\"3\"\/><path d=\"M392 105 l-8 14 h16z M392 348 l-8 -14 h16z\" fill=\"#1a8a9e\"\/><text x=\"416\" y=\"235\" font-size=\"24\" font-family=\"Arial\" fill=\"#0b2542\" font-weight=\"700\">H<\/text>\r\n          <text x=\"240\" y=\"392\" text-anchor=\"middle\" font-size=\"18\" font-family=\"Arial\" fill=\"#5d6b78\">Example: D10 \u00d7 d7 \u00d7 H30 mm<\/text>\r\n        <\/svg>\r\n      <\/div>\r\n      <div>\r\n        <h2>Define OD, ID and Length as One Finished Geometry<\/h2>\r\n        <p>For OSENC tube magnets, use <strong>D = outer diameter<\/strong>, <strong>d = inner diameter<\/strong> and <strong>H = overall height \/ length<\/strong>.<\/p>\r\n        <p>Example: <strong>D10 \u00d7 d7 \u00d7 H30 mm<\/strong> means 10 mm OD, 7 mm ID and 30 mm overall length.<\/p>\r\n        <p>For a straight-bore tube, nominal radial wall thickness is <strong>(D \u2212 d) \/ 2<\/strong>. We do not judge manufacturability from wall thickness alone. We review OD, ID, length, grade, grinding allowance, coating and edge condition as one part.<\/p>\r\n        <p>If the tube runs on a shaft or works near a sensor, put the critical fit, concentricity or runout requirement directly on the drawing.<\/p>\r\n      <\/div>\r\n    <\/div>\r\n    <div class=\"wrap\" style=\"margin-top:28px\">\r\n      <div class=\"table-wrap\"><table><thead><tr><th>Parameter<\/th><th>OSENC Range<\/th><th>Engineering Focus<\/th><\/tr><\/thead><tbody>\r\n        <tr><td>Outer diameter<\/td><td><strong>1.5\u201360 mm<\/strong><\/td><td>Finished OD, handling and magnetic circuit<\/td><\/tr>\r\n        <tr><td>Inner diameter<\/td><td><strong>0.4\u201350 mm<\/strong><\/td><td>Bore fit, wall thickness and coating build<\/td><\/tr>\r\n        <tr><td>Height \/ length<\/td><td><strong>0.3\u2013120 mm<\/strong><\/td><td>Long thin-wall geometry and handling risk<\/td><\/tr>\r\n        <tr><td>Magnetic-direction dimension<\/td><td><strong>Up to 120 mm<\/strong><\/td><td>Pole direction fixed on the approved drawing<\/td><\/tr>\r\n      <\/tbody><\/table><\/div>\r\n      <div class=\"engineering-note\"><h3>Long Tubes, Small Bores and Thin Walls Need Full-Geometry Review<\/h3><p>Theoretical OD, ID and H ranges cannot be combined arbitrarily. Long tubes, small bores and thin walls increase machining, edge and handling difficulty. Send the complete OD \u00d7 ID \u00d7 H combination and we will review the geometry before the production drawing is released.<\/p><\/div>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"section\">\r\n    <div class=\"wrap two\">\r\n      <div class=\"card\">\r\n        <h2>We Match Magnetization to Your Magnetic Circuit<\/h2>\r\n        <p>We select magnetization from the working magnetic circuit, not from tube shape alone. Show us the shaft, sensor position, air gap, mating steel or target field direction on your drawing.<\/p>\r\n        <h3>Axial Magnetization<\/h3><p>We use axial magnetization when the main magnetic field needs to work through the two annular end faces.<\/p>\r\n        <h3>Diametrical Magnetization<\/h3><p>We use diametrical magnetization when the field needs to act across the cylindrical body, including suitable rotating and sensing designs.<\/p>\r\n        <h3>Radial & Multipole Requirements<\/h3><p>For radial or multipole requirements, we review OD\/ID ratio, axial length, grade and tooling before quotation.<\/p>\r\n      <\/div>\r\n      <div class=\"card\">\r\n        <h2>Select Grade Around Temperature and Geometry<\/h2>\r\n        <p>OSENC can review <strong>N35\u2013N55<\/strong> and temperature-grade families including <strong>M, H, SH, EH and AH<\/strong> for custom tube magnets.<\/p>\r\n        <p>We select the grade together with OD, ID, wall thickness, operating temperature and the required magnetic circuit. A higher grade is not automatically the better choice if the geometry or temperature requirement points to another solution.<\/p>\r\n        <p><strong>Send us the operating temperature and magnetic target.<\/strong> We will match the grade to the finished part rather than treating grade as an isolated specification.<\/p>\r\n      <\/div>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"section alt\">\r\n    <div class=\"wrap two\">\r\n      <div>\r\n        <h2>Coating Options for Neodymium Tube Magnets<\/h2>\r\n        <p>OSENC offers <a href=\"https:\/\/osenc.com\/nickel-coating-for-magnets\/\">nickel<\/a>, zinc, <a href=\"https:\/\/osenc.com\/epoxy-coating-for-magnets\/\">epoxy<\/a> and <a href=\"https:\/\/osenc.com\/parylene-coating-for-magnets\/\">Parylene<\/a>-based coating options for custom neodymium magnets.<\/p>\r\n        <p>For a tube magnet, coating selection affects more than corrosion resistance. Coating build changes the finished OD, finished ID and actual assembly clearance.<\/p>\r\n        <p><strong>If the bore fits over a shaft or sleeve, specify the required finished ID after coating.<\/strong> We use the finished dimension on the approved drawing as the production target.<\/p>\r\n        <p>For epoxy-coated custom magnets, OSENC's confirmed epoxy coating thickness range is <strong>15\u201340 \u03bcm<\/strong>. We confirm whether the requested Tube geometry and finished tolerance are suitable before production release.<\/p>\r\n      <\/div>\r\n      <div class=\"media-grid\">\r\n        <img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/osenc.com\/wp-content\/uploads\/2025\/08\/Nickel-Coating-for-Magnets.webp\" width=\"500\" height=\"500\" loading=\"lazy\" alt=\"OSENC nickel coated neodymium magnets showing metallic coating finish\">\r\n        <img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/osenc.com\/wp-content\/uploads\/2023\/01\/epoxy-magnets.webp\" width=\"624\" height=\"624\" loading=\"lazy\" alt=\"OSENC epoxy coated neodymium magnets including through-hole geometries\">\r\n      <\/div>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"section\">\r\n    <div class=\"wrap\">\r\n      <h2>Where We Use Tube-Shaped NdFeB Geometry<\/h2>\r\n      <div class=\"four\">\r\n        <div class=\"card\"><h3>Motors & Shaft Rotation<\/h3><p>For motor and shaft-mounted designs, we review bore fit, rotor geometry, pole direction, air gap and operating temperature together.<\/p><\/div>\r\n        <div class=\"card\"><h3>Sensors & Reed-Switch Systems<\/h3><p>For sensing applications, send us the sensor location, reading direction and working air gap. We review the tube geometry and magnetization around the detection position.<\/p><\/div>\r\n        <div class=\"card\"><h3>Actuators & Guided Motion<\/h3><p>For actuator designs, we match the tube magnet to the rod, guide, travel direction and magnetic circuit.<\/p><\/div>\r\n        <div class=\"card\"><h3>Custom Cylindrical Assemblies<\/h3><p>We use through-bore geometry when the magnet needs to fit around a shaft, sleeve, cable, guide or internal component that a solid cylinder would block.<\/p><\/div>\r\n      <\/div>\r\n      <div class=\"media-grid\" style=\"margin-top:24px\">\r\n        <img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/osenc.com\/wp-content\/uploads\/elementor\/thumbs\/neodymium-ring-magnets1-rpo6eiptb36w38p3qqcjangnd2g6rzdv47xnjj0ms8.webp\" width=\"700\" height=\"700\" loading=\"lazy\" alt=\"OSENC real through-hole neodymium magnet geometries in different sizes\">\r\n        <img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/osenc.com\/wp-content\/uploads\/elementor\/thumbs\/neodymium-ring-magnets6-rpo6dx3ixwdao7ki8z047ax1p7equy01d8xhi5worc.webp\" width=\"700\" height=\"700\" loading=\"lazy\" alt=\"OSENC real neodymium through-hole magnet showing bore and coated surfaces\">\r\n      <\/div>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"section alt\">\r\n    <div class=\"wrap\">\r\n      <h2>How We Inspect Neodymium Tube Magnets<\/h2>\r\n      <p class=\"section-intro\">Your drawing defines what matters. We build the inspection plan around the dimensions and magnetic characteristics that control your assembly.<\/p>\r\n      <div class=\"table-wrap\"><table><thead><tr><th>Inspection<\/th><th>What We Check<\/th><th>Why It Matters<\/th><\/tr><\/thead><tbody>\r\n        <tr><td><strong>OD \/ ID \/ H<\/strong><\/td><td>Finished dimensions after processing and coating<\/td><td>Shaft fit and assembly clearance<\/td><\/tr>\r\n        <tr><td><strong>Bore & Edge<\/strong><\/td><td>Bore condition, chipping and edge damage<\/td><td>Thin-wall reliability and assembly protection<\/td><\/tr>\r\n        <tr><td><strong>Coating<\/strong><\/td><td>Coverage, surface condition and specified thickness<\/td><td>Corrosion protection and finished fit<\/td><\/tr>\r\n        <tr><td><strong>Pole Direction<\/strong><\/td><td>Magnetization orientation<\/td><td>Correct magnetic circuit<\/td><\/tr>\r\n        <tr><td><strong>Gauss Test<\/strong><\/td><td>Defined measurement point, orientation and distance<\/td><td>Repeatable magnetic acceptance<\/td><\/tr>\r\n        <tr><td><strong>Special Geometry<\/strong><\/td><td>Concentricity or runout when specified<\/td><td>Rotating or close-gap assemblies<\/td><\/tr>\r\n      <\/tbody><\/table><\/div>\r\n      <div class=\"media-grid\" style=\"margin-top:24px\">\r\n        <img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/osenc.com\/wp-content\/uploads\/2023\/05\/Tiny-neodymium-Magnet-2048x1365.webp\" width=\"2048\" height=\"1365\" loading=\"lazy\" alt=\"OSENC dimensional inspection of neodymium magnets with precision caliper\">\r\n        <img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/osenc.com\/wp-content\/uploads\/2022\/11\/Inspection-Tool-768x418.webp\" width=\"768\" height=\"418\" loading=\"lazy\" alt=\"OSENC magnet quality inspection equipment including measurement and test systems\">\r\n      <\/div>\r\n      <div class=\"engineering-note\"><h3>Define the Gauss Test Before Comparing Numbers<\/h3><p>A Gauss value is meaningful only when magnet size, grade, pole direction, probe position, probe orientation and working distance are fixed. If your project has a magnetic acceptance requirement, send us the measurement point and working gap so we can define the test condition before production.<\/p><\/div>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"section\">\r\n    <div class=\"wrap two\">\r\n      <div>\r\n        <h2>Send These Details and We Can Review Your Tube Magnet<\/h2>\r\n        <p><strong>A complete drawing is best, but you can start with OD \u00d7 ID \u00d7 H and the application.<\/strong><\/p>\r\n        <ol class=\"checklist\">\r\n          <li>OD \u00d7 ID \u00d7 H.<\/li><li>Critical tolerances and bore fit.<\/li><li>Grade or magnetic target.<\/li><li>Magnetization direction or pole layout.<\/li><li>Operating temperature.<\/li><li>Coating and service environment.<\/li><li>Working gap and sensor\/shaft\/housing position.<\/li><li>Prototype quantity and repeat volume.<\/li><li>Inspection or acceptance requirement.<\/li>\r\n        <\/ol>\r\n      <\/div>\r\n      <div class=\"buy-box\">\r\n        <h2>Start With the Geometry You Have<\/h2>\r\n        <p>You do not need a perfect production drawing to start the discussion. Send us the size, application and magnetic working direction you already know.<\/p>\r\n        <p>We will review the tube geometry, grade, coating, magnetization and inspection requirements as one finished part before quotation and sampling.<\/p>\r\n        <a class=\"btn btn-primary\" href=\"https:\/\/osenc.com\/contact-us\/\">Send Your Tube Magnet Requirement<\/a>\r\n      <\/div>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"section alt\">\r\n    <div class=\"wrap\">\r\n      <h2>Neodymium Tube Magnet vs Ring Magnet vs Magnetic Filter Tube<\/h2>\r\n      <div class=\"table-wrap\"><table><thead><tr><th>Product<\/th><th>What It Is<\/th><th>Best Fit<\/th><th>Main RFQ Inputs<\/th><\/tr><\/thead><tbody>\r\n        <tr><td><strong>Neodymium magnet tube<\/strong><\/td><td>Elongated sintered NdFeB part with a straight through bore.<\/td><td>Shafts, sensors, motors, actuators and cylindrical OEM assemblies.<\/td><td>OD, ID, H, grade, magnetization, coating, tolerance, quantity.<\/td><\/tr>\r\n        <tr><td><strong>Neodymium ring magnet<\/strong><\/td><td>Shorter through-hole NdFeB geometry, often washer-like.<\/td><td>Compact rotors, speakers, sensors, couplings and mounting.<\/td><td>OD, ID, thickness, magnetization, coating.<\/td><\/tr>\r\n        <tr><td><strong>Magnetic filter tube \/ rod<\/strong><\/td><td>Magnetic-separation component with a protective stainless-steel structure around an internal magnetic circuit.<\/td><td>Removing ferrous contamination from product flow.<\/td><td>Tube diameter, length, working gap, process material, temperature, cleaning method.<\/td><\/tr>\r\n      <\/tbody><\/table><\/div>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"section\">\r\n    <div class=\"wrap\">\r\n      <h2>Neodymium Magnet Tube FAQ<\/h2>\r\n      <details><summary>What is a neodymium magnet tube?<\/summary><p>A neodymium magnet tube is an elongated tube-shaped sintered NdFeB permanent magnet with a straight through bore. OSENC manufactures the geometry to drawing for shaft, sensing, motor and custom cylindrical assembly requirements.<\/p><\/details>\r\n      <details><summary>What sizes can OSENC manufacture?<\/summary><p>Our current Tube range is OD 1.5\u201360 mm, ID 0.4\u201350 mm and H 0.3\u2013120 mm, with a maximum magnetic-direction dimension of 120 mm. We review the complete OD \u00d7 ID \u00d7 H combination before production release.<\/p><\/details>\r\n      <details><summary>How do I specify the dimensions?<\/summary><p>Use D \u00d7 d \u00d7 H, where D is OD, d is ID and H is overall length. For example, D10 \u00d7 d7 \u00d7 H30 mm means 10 mm OD, 7 mm ID and 30 mm length.<\/p><\/details>\r\n      <details><summary>Can OSENC make long, thin-wall neodymium tube magnets?<\/summary><p>We review long and thin-wall tube geometries, but feasibility depends on the complete OD \u00d7 ID \u00d7 H combination, grade, coating and edge condition. Send the full geometry rather than checking wall thickness alone.<\/p><\/details>\r\n      <details><summary>Can OSENC control the finished bore size after coating?<\/summary><p>Yes. If ID is a critical fit dimension, specify the finished bore requirement on the drawing. We review coating together with the finished dimensional requirement.<\/p><\/details>\r\n      <details><summary>How should I specify magnetization on the drawing?<\/summary><p>Show the required north\/south pole direction, sensor position or magnetic working faces. If the magnetic circuit is not yet fixed, send us the assembly layout and we can review the suitable magnetization direction with you.<\/p><\/details>\r\n      <details><summary>Are neodymium tube magnets always radially magnetized?<\/summary><p>No. We match magnetization to the real magnetic circuit. Axial and diametrical arrangements are used for suitable through-hole designs, while radial or multipole requirements receive a geometry and tooling review before quotation.<\/p><\/details>\r\n      <details><summary>Which coatings are available?<\/summary><p>OSENC coating options for custom neodymium magnets include nickel, zinc, epoxy and Parylene-based systems. For Tube projects, we select the coating together with corrosion exposure and the required finished OD\/ID fit.<\/p><\/details>\r\n      <details><summary>Can I start with samples before volume production?<\/summary><p>Yes. Sample validation is the right stage to confirm fit, finished dimensions, coating, pole direction and any agreed magnetic test before repeat production.<\/p><\/details>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"section\">\r\n    <div class=\"wrap final-cta\">\r\n      <h2>Send Your OD \u00d7 ID \u00d7 H Drawing to OSENC<\/h2>\r\n      <p>We manufacture neodymium tube magnets as finished engineered parts. Send the geometry, application, magnetization direction, coating, operating temperature and quantity, and we will review the complete part for quotation.<\/p>\r\n      <a class=\"btn btn-primary\" href=\"https:\/\/osenc.com\/contact-us\/\">Get an Engineering Quote<\/a>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"section alt\">\r\n    <div class=\"wrap\">\r\n      <h2>Related OSENC Capabilities<\/h2>\r\n      <div class=\"related\"><a href=\"https:\/\/osenc.com\/neodymium-magnets\/\">Neodymium Magnets<\/a><a href=\"https:\/\/osenc.com\/neodymium-ring-magnets\/\">Neodymium Ring Magnets<\/a><a href=\"https:\/\/osenc.com\/micro-magnets\/\">Micro Magnets<\/a><a href=\"https:\/\/osenc.com\/neodymium-magnet-coating\/\">Magnet Coatings<\/a><a href=\"https:\/\/osenc.com\/quality-management\/\">Quality Management<\/a><a href=\"https:\/\/osenc.com\/contact-us\/\">Contact OSENC<\/a><\/div>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"Product\",\"@id\":\"https:\/\/osenc.com\/neodymium-magnet-tubes\/#product\",\"name\":\"Custom Neodymium Magnet Tubes\",\"url\":\"https:\/\/osenc.com\/neodymium-magnet-tubes\/\",\"image\":[\"https:\/\/osenc.com\/wp-content\/uploads\/2022\/12\/neodymium-magnet-tubes.webp\"],\"description\":\"Custom sintered NdFeB tube magnets manufactured to drawing with a straight through bore, controlled OD, ID, length, coating and magnetization review.\",\"brand\":{\"@type\":\"Brand\",\"name\":\"OSENC\"},\"manufacturer\":{\"@type\":\"Organization\",\"name\":\"OSENC\",\"url\":\"https:\/\/osenc.com\/\"},\"material\":\"Sintered NdFeB\",\"category\":\"Neodymium Magnet Tube\",\"additionalProperty\":[{\"@type\":\"PropertyValue\",\"name\":\"Outer diameter range\",\"value\":\"1.5\u201360 mm\"},{\"@type\":\"PropertyValue\",\"name\":\"Inner diameter range\",\"value\":\"0.4\u201350 mm\"},{\"@type\":\"PropertyValue\",\"name\":\"Height \/ length range\",\"value\":\"0.3\u2013120 mm\"},{\"@type\":\"PropertyValue\",\"name\":\"Maximum magnetic-direction dimension\",\"value\":\"120 mm\"},{\"@type\":\"PropertyValue\",\"name\":\"Grade family\",\"value\":\"N35\u2013N55; M, H, SH, EH and AH reviewed by application\"},{\"@type\":\"PropertyValue\",\"name\":\"Coating options\",\"value\":\"Nickel, zinc, epoxy, Parylene-based systems\"}]}<\/script>\r\n  <script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"What is a neodymium magnet tube?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"A neodymium magnet tube is an elongated tube-shaped sintered NdFeB permanent magnet with a straight through bore. 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Our current manufacturing range covers OD 1.5\u201360 mm, ID 0.4\u201350 mm and [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":2248,"parent":0,"menu_order":4,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-2233","page","type-page","status-publish","has-post-thumbnail","hentry"],"_links":{"self":[{"href":"https:\/\/osenc.com\/it\/wp-json\/wp\/v2\/pages\/2233","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/osenc.com\/it\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/osenc.com\/it\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/osenc.com\/it\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/osenc.com\/it\/wp-json\/wp\/v2\/comments?post=2233"}],"version-history":[{"count":6,"href":"https:\/\/osenc.com\/it\/wp-json\/wp\/v2\/pages\/2233\/revisions"}],"predecessor-version":[{"id":8807,"href":"https:\/\/osenc.com\/it\/wp-json\/wp\/v2\/pages\/2233\/revisions\/8807"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/osenc.com\/it\/wp-json\/wp\/v2\/media\/2248"}],"wp:attachment":[{"href":"https:\/\/osenc.com\/it\/wp-json\/wp\/v2\/media?parent=2233"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}