{"id":357,"date":"2022-11-06T05:49:37","date_gmt":"2022-11-06T05:49:37","guid":{"rendered":"https:\/\/neosumk.com\/?page_id=357"},"modified":"2026-08-15T18:49:00","modified_gmt":"2026-08-15T10:49:00","slug":"neodymium-segment-magnets","status":"publish","type":"page","link":"https:\/\/ct.semitanker.com\/it\/neodymium-segment-magnets\/","title":{"rendered":"Magneti segmentati al neodimio"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"357\" class=\"elementor elementor-357\" data-elementor-post-type=\"page\">\n\t\t\t\t<div class=\"elementor-element elementor-element-6571ccb e-con e-atomic-element e-div-block-base e-6571ccb-a116768 \" data-id=\"6571ccb\" data-element_type=\"e-div-block\" data-e-type=\"e-div-block\" data-interaction-id=\"6571ccb\" data-e-type=\"e-div-block\" data-id=\"6571ccb\">\n    \t\t<div class=\"elementor-element elementor-element-9981ac4 elementor-widget elementor-widget-html\" data-id=\"9981ac4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t\t<!--\r\nSEO CONFIGURATION\r\nTitle: Neodymium Segment Magnets | Custom NdFeB Arc Magnets | OSENC\r\nMeta Description: OSENC manufactures custom NdFeB arc and segment magnets for motors, generators, rotors and Halbach assemblies with drawing-defined geometry, HcJ requirements, magnetization, coating and QC.\r\nCanonical: https:\/\/ct.semitanker.com\/neodymium-segment-magnets\/\r\n-->\r\n<style>\r\n.osenc-pdp {\r\n  --navy:#0b2542; --blue:#123b63; --teal:#1a8a9e; --ink:#172536;\r\n  --muted:#5f6f7f; --line:#dbe5ee; --soft:#f3f7fa; --white:#fff;\r\n  max-width:1280px; margin:0 auto; color:var(--ink); font-family:Arial,Helvetica,sans-serif;\r\n  line-height:1.62; font-size:16px;\r\n}\r\n.osenc-pdp *{box-sizing:border-box}\r\n.osenc-pdp a{color:var(--blue);text-decoration:none}\r\n.osenc-pdp a:hover{text-decoration:underline}\r\n.osenc-pdp h1,.osenc-pdp h2,.osenc-pdp h3{color:var(--navy);line-height:1.18;margin:0 0 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.osenc-pdp .osenc-hero{grid-template-columns:1fr;gap:24px;padding:28px 18px}\r\n .osenc-pdp .osenc-grid-2,.osenc-pdp .osenc-grid-3{grid-template-columns:1fr}\r\n .osenc-pdp .osenc-specbar{margin:0 18px 12px} .osenc-pdp .osenc-lead{font-size:17px}\r\n}\r\n@media(max-width:520px){.osenc-pdp .osenc-specbar{grid-template-columns:1fr}}\r\n\r\n@media(max-width:760px){\r\n  .osenc-pdp .osenc-table-wrap{overflow:visible}\r\n  .osenc-pdp .osenc-table-wrap table{\r\n    display:block;\r\n    width:100% !important;\r\n    min-width:0 !important;\r\n    table-layout:auto;\r\n    background:transparent;\r\n  }\r\n  .osenc-pdp .osenc-table-wrap thead{display:none}\r\n  .osenc-pdp .osenc-table-wrap tbody,\r\n  .osenc-pdp .osenc-table-wrap tr{display:block;width:100%}\r\n  .osenc-pdp .osenc-table-wrap tr{\r\n    background:#fff;\r\n    border-bottom:1px solid var(--line);\r\n    padding:8px 0;\r\n  }\r\n  .osenc-pdp .osenc-table-wrap tr:last-child{border-bottom:0}\r\n  .osenc-pdp .osenc-table-wrap td{\r\n    display:grid;\r\n    grid-template-columns:minmax(120px,36%) 1fr;\r\n    gap:12px;\r\n    width:100%;\r\n    border-bottom:0;\r\n    padding:10px 14px;\r\n  }\r\n  .osenc-pdp .osenc-table-wrap td:before{\r\n    content:attr(data-label);\r\n    font-weight:700;\r\n    color:var(--navy);\r\n  }\r\n}\r\n<\/style>\r\n<section class=\"osenc-pdp\">\r\n<div class=\"osenc-hero\">\r\n<div>\r\n<div class=\"osenc-eyebrow\">Custom Arc \/ Segment NdFeB<\/div>\r\n<h1>Custom Neodymium Segment Magnets<\/h1>\r\n<p class=\"osenc-lead\">OSENC manufactures custom neodymium segment magnets for motors, generators, magnetic couplings, rotors and segmented Halbach assemblies. We engineer the arc geometry, grade, magnetization, coating and finished dimensions around the actual magnetic circuit.<\/p>\r\n<p>Send the OD\/ID or radii, axial length, arc angle, segment count, working gap, operating temperature and magnetic target. We lock manufacturability, magnetization and inspection requirements before the sample moves into production approval.<\/p>\r\n<div class=\"osenc-chips\">\r\n<span class=\"osenc-chip\">Arc Geometry to Drawing<\/span>\r\n<span class=\"osenc-chip\">N35\u2013N52 + High-HcJ<\/span>\r\n<span class=\"osenc-chip\">Approximated Radial \/ Parallel<\/span>\r\n<span class=\"osenc-chip\">Custom Magnetization<\/span>\r\n<span class=\"osenc-chip\">Motor \/ Rotor Projects<\/span>\r\n<\/div>\r\n<a class=\"osenc-btn\" href=\"https:\/\/ct.semitanker.com\/contact-us\/\">Send Your Arc Magnet Drawing<\/a>\r\n<p class=\"osenc-microcopy\">OSENC will return the manufacturability basis, required magnetic inputs and quotation specification from your drawing.<\/p>\r\n<\/div>\r\n<div class=\"osenc-media\">\r\n<img fetchpriority=\"high\" decoding=\"async\" alt=\"Neodymium arc segment magnets supplied by OSENC\" fetchpriority=\"high\" height=\"900\" loading=\"eager\" src=\"https:\/\/ct.semitanker.com\/wp-content\/uploads\/2026\/08\/neodymium-segment-magnets-osenc.webp\" width=\"1200\"\/>\r\n<\/div>\r\n<\/div>\r\n<div aria-label=\"Neodymium segment magnet procurement highlights\" class=\"osenc-specbar\">\r\n<div class=\"osenc-spec\"><strong>Arc \/ Segment<\/strong><span>Drawing-based curved NdFeB geometry<\/span><\/div>\r\n<div class=\"osenc-spec\"><strong>N35\u2013N52<\/strong><span>Standard energy-grade working range<\/span><\/div>\r\n<div class=\"osenc-spec\"><strong>M \/ H \/ SH \/ UH \/ EH<\/strong><span>High-HcJ grade families for thermal margin<\/span><\/div>\r\n<div class=\"osenc-spec\"><strong>Ni \/ Zn \/ Epoxy<\/strong><span>Available coating options<\/span><\/div>\r\n<div class=\"osenc-spec\"><strong>Production Definition<\/strong><span>OD, ID, thickness, length and arc angle locked by project<\/span><\/div>\r\n<\/div>\r\n<div class=\"osenc-section osenc-section--soft\">\r\n<div class=\"osenc-eyebrow\">Quick Procurement Answer<\/div>\r\n<h2>Why OSENC Uses Neodymium Arc and Segment Magnets<\/h2>\r\n<p>OSENC uses segmented arc magnets when segmentation improves rotor manufacturability, magnetic-layout flexibility or total assembly cost. We define the segment count, arc angle, magnetization, air gap and assembly method around the finished magnetic system.<\/p>\r\n<p>Field and cost advantages are verified against the actual design rather than assumed from segment count alone. That keeps the magnet specification tied to the rotor, coupling or Halbach assembly that must perform in production.<\/p>\r\n<div class=\"osenc-note\"><strong>Arc size is controlled by the complete geometry, not by OD alone.<\/strong> We define OD, ID, radial thickness, axial length, arc angle and critical tolerances together, then lock the manufacturing route from the drawing before quotation.<\/div>\r\n<\/div>\r\n<div class=\"osenc-section\">\r\n<div class=\"osenc-eyebrow\">Drawing Definition<\/div>\r\n<h2>Define the Arc Magnet with the Dimensions That Control the Rotor<\/h2>\r\n<div class=\"osenc-table-wrap\">\r\n<table>\r\n<thead><tr><th>Drawing Input<\/th><th>Why OSENC Needs It<\/th><\/tr><\/thead>\r\n<tbody>\r\n<tr><td data-label=\"Drawing Input\">Outer radius \/ OD<\/td><td data-label=\"Why OSENC Needs It\">Controls the outside rotor or stator interface and arc curvature.<\/td><\/tr>\r\n<tr><td data-label=\"Drawing Input\">Inner radius \/ ID<\/td><td data-label=\"Why OSENC Needs It\">Defines radial thickness and the inner working surface.<\/td><\/tr>\r\n<tr><td data-label=\"Drawing Input\">Axial length<\/td><td data-label=\"Why OSENC Needs It\">Controls active magnetic length and assembly fit.<\/td><\/tr>\r\n<tr><td data-label=\"Drawing Input\">Arc angle \/ segment count<\/td><td data-label=\"Why OSENC Needs It\">Defines pole coverage, gap between segments and assembly indexing.<\/td><\/tr>\r\n<tr><td data-label=\"Drawing Input\">Tolerances<\/td><td data-label=\"Why OSENC Needs It\">Critical on radius, radial thickness, axial length, arc angle and mating surfaces. Linear tolerances are reviewed separately from angular tolerance.<\/td><\/tr>\r\n<tr><td data-label=\"Drawing Input\">Magnetization direction<\/td><td data-label=\"Why OSENC Needs It\">Must match the magnetic circuit; it cannot be inferred safely from the arc shape alone.<\/td><\/tr>\r\n<\/tbody>\r\n<\/table>\r\n<\/div>\r\n<\/div>\r\n<div class=\"osenc-section\">\r\n<div class=\"osenc-eyebrow\">Why Motor Engineers Source Arc Magnets from OSENC<\/div>\r\n<h2>OSENC Engineers Neodymium Arc Magnets Around the Rotor<\/h2>\r\n<div class=\"osenc-grid-2\">\r\n<div class=\"osenc-card\">\r\n<h3>Rotor Geometry Control<\/h3>\r\n<p>We control OD, ID, radial thickness, axial length, arc angle, segment count and working gap as one rotor geometry before the sample is released.<\/p>\r\n<\/div>\r\n<div class=\"osenc-card\">\r\n<h3>HcJ &amp; Temperature Selection<\/h3>\r\n<p>We select grade and intrinsic coercivity against the real thermal condition, air gap and demagnetization working point instead of choosing by grade number alone.<\/p>\r\n<\/div>\r\n<div class=\"osenc-card\">\r\n<h3>Magnetization Engineering<\/h3>\r\n<p>We lock approximated radial, parallel or angle-defined orientation to the drawing and handle true radial designs as dedicated engineering programs.<\/p>\r\n<\/div>\r\n<div class=\"osenc-card\">\r\n<h3>Finished Geometry Control<\/h3>\r\n<p>We inspect radius, radial thickness, axial length, arc angle and critical mating dimensions against the approved finished-part drawing.<\/p>\r\n<\/div>\r\n<\/div>\r\n<\/div><div class=\"osenc-section osenc-section--soft\">\r\n<div class=\"osenc-eyebrow\">Production Advantage<\/div>\r\n<h2>Motor Arc Magnet Projects OSENC Is Built to Control<\/h2>\r\n<div class=\"osenc-grid-2\">\r\n<div class=\"osenc-card\">\r\n<h3>Rotor Geometry Matching<\/h3>\r\n<p>OSENC manufactures to the approved rotor interface, not to an isolated arc dimension. Radius, radial thickness, axial length, arc angle, gap and segment count are locked as one assembly geometry.<\/p>\r\n<\/div>\r\n<div class=\"osenc-card\">\r\n<h3>Magnetization Indexing<\/h3>\r\n<p>Pole direction and segment indexing are locked against the rotor or Halbach assembly drawing before sample release.<\/p>\r\n<\/div>\r\n<div class=\"osenc-card\">\r\n<h3>Thermal Demagnetization Margin<\/h3>\r\n<p>Grade family and HcJ requirement are defined against operating temperature, reverse field and the real magnetic circuit rather than by grade number alone.<\/p>\r\n<\/div>\r\n<div class=\"osenc-card\">\r\n<h3>Repeat Production Control<\/h3>\r\n<p>Approved geometry, material, coating, polarity and inspection requirements become the controlled repeat-production specification.<\/p>\r\n<\/div>\r\n<\/div>\r\n<\/div>\r\n<div class=\"osenc-section osenc-section--soft\">\r\n<div class=\"osenc-grid-2\">\r\n<div>\r\n<div class=\"osenc-eyebrow\">Finished Dimensions<\/div>\r\n<h2>Arc Magnet Dimensional Control for Rotor Assembly Fit<\/h2>\r\n<p>Arc magnets create more dimensional interactions than a simple block. Radius, radial thickness, axial length and arc angle all affect rotor fit, adhesive gap and pole spacing. OSENC inspects the finished coated part against the approved drawing.<\/p>\r\n<p>OSENC defines achievable linear and angular tolerances from the arc geometry, finished dimensions, coating and the approved inspection method. Radius, radial thickness, axial length and arc angle are controlled as separate drawing characteristics because linear grinding and angle control are different manufacturing requirements.<\/p>\r\n<\/div>\r\n<div class=\"osenc-media\">\r\n<img loading=\"lazy\" decoding=\"async\" alt=\"OSENC dimensional inspection of finished neodymium magnet parts\" height=\"900\" loading=\"lazy\" src=\"https:\/\/ct.semitanker.com\/wp-content\/uploads\/2026\/08\/segment-magnet-dimension-inspection-osenc.webp\" width=\"1200\"\/>\r\n<\/div>\r\n<\/div>\r\n<\/div>\r\n<div class=\"osenc-section\">\r\n<div class=\"osenc-eyebrow\">Magnetization<\/div>\r\n<h2>Neodymium Arc Magnet Orientation Must Match the Motor Magnetic Circuit<\/h2>\r\n<p>OSENC uses <strong>Radially IN \/ Radially OUT approximated radial orientation<\/strong>, parallel orientation and drawing-defined linear magnetization for standard arc projects. The North\/South polarity on the inner or outer radius is locked on the drawing before sampling.<\/p>\r\n<div class=\"osenc-grid-3\">\r\n<div class=\"osenc-card\"><h3>Approximated Radial IN \/ OUT<\/h3><p>A linear orientation is used to approximate radial field direction across the arc. The radial component reduces toward the leading and trailing edges, so the rotor design must account for the real field distribution.<\/p><\/div>\r\n<div class=\"osenc-card\"><h3>True Radial Orientation<\/h3><p>True radial anisotropic NdFeB segments require a <strong>dedicated orientation, tooling and magnetization evaluation<\/strong>. OSENC confirms geometry, pole direction, volume and process feasibility before committing to the production route.<\/p><\/div>\r\n<div class=\"osenc-card\"><h3>Angle-Defined \/ Halbach Segments<\/h3><p>OSENC uses parallel or angle-defined linear orientation to create controlled segment-to-segment field patterns. Circumferential field behavior is engineered through orientation pattern and assembly rather than treated as a generic one-step magnetization callout.<\/p><\/div>\r\n<\/div>\r\n<div class=\"osenc-media\" style=\"max-width:760px;margin:26px auto 0\">\r\n<img loading=\"lazy\" decoding=\"async\" alt=\"OSENC magnetization direction inspection for custom neodymium magnets\" height=\"900\" loading=\"lazy\" src=\"https:\/\/ct.semitanker.com\/wp-content\/uploads\/2026\/08\/segment-magnet-magnetization-check-osenc.webp\" width=\"1200\"\/>\r\n<\/div>\r\n<\/div>\r\n<div class=\"osenc-section osenc-section--soft\">\r\n<div class=\"osenc-eyebrow\">Motor &amp; Generator Projects<\/div>\r\n<h2>NdFeB Arc Magnet Grades for Motors: HcJ, Temperature and Working Point<\/h2>\r\n<p>Arc segments are widely used in surface permanent-magnet motors and generators, but the grade suffix is not a universal temperature guarantee. OSENC defines required flux, intrinsic coercivity (HcJ), continuous and peak temperature, magnet geometry, air gap and the demagnetization working point together.<\/p>\r\n<div class=\"osenc-table-wrap\">\r\n<table>\r\n<thead><tr><th>Grade Family<\/th><th>Engineering Direction<\/th><th>OSENC Selection Basis<\/th><\/tr><\/thead>\r\n<tbody>\r\n<tr><td data-label=\"Grade Family\"><strong>Standard N Grades<\/strong><\/td><td data-label=\"Engineering Direction\">High magnetic output where thermal and reverse-field margin are compatible with the application.<\/td><td data-label=\"OSENC Selection Basis\">Flux target, magnet volume, working gap and magnetic circuit.<\/td><\/tr>\r\n<tr><td data-label=\"Grade Family\"><strong>H<\/strong><\/td><td data-label=\"Engineering Direction\">Higher intrinsic coercivity for applications requiring more demagnetization margin.<\/td><td data-label=\"OSENC Selection Basis\">Operating temperature, reverse field, geometry and working point.<\/td><\/tr>\r\n<tr><td data-label=\"Grade Family\"><strong>SH<\/strong><\/td><td data-label=\"Engineering Direction\">Higher-HcJ family for motor and generator projects with increased thermal demand.<\/td><td data-label=\"OSENC Selection Basis\">Continuous\/peak temperature and magnetic-circuit condition.<\/td><\/tr>\r\n<tr><td data-label=\"Grade Family\"><strong>UH \/ EH<\/strong><\/td><td data-label=\"Engineering Direction\">High-coercivity families used when thermal and reverse-field risk dominate material selection.<\/td><td data-label=\"OSENC Selection Basis\">Controlled material specification, geometry, Pc, air gap and fault-condition requirement.<\/td><\/tr>\r\n<\/tbody>\r\n<\/table>\r\n<\/div>\r\n<p style=\"margin-top:16px\"><strong>Final grade values are controlled by the approved OSENC material specification or certificate used for the order.<\/strong> Grade suffixes are not unconditional operating-temperature guarantees; demagnetization margin depends on geometry, permeance coefficient (Pc), air gap, magnetic circuit and external reverse field.<\/p>\r\n<div class=\"osenc-links\">\r\n<a href=\"https:\/\/ct.semitanker.com\/motor-and-permanent-magnet\/\">Permanent Magnet Motors<\/a>\r\n<a href=\"https:\/\/ct.semitanker.com\/neodymium-magnets\/\">Neodymium Magnets<\/a>\r\n<\/div>\r\n<\/div>\r\n<div class=\"osenc-section\">\r\n<div class=\"osenc-eyebrow\">Halbach &amp; Segmented Rings<\/div>\r\n<h2>Segment Count and Magnetization Pattern Change the Result<\/h2>\r\n<p>Segmented Halbach rotors use multiple magnets with controlled orientation to shape the field around the rotor. More segmentation can move the field closer to an ideal distribution, but it also adds assembly, indexing and magnetization complexity.<\/p>\r\n<p>OSENC therefore defines segment count, arc angle, magnetization direction, air gap and assembly method together. We do not promise a universal torque or flux increase simply because a design uses a Halbach arrangement.<\/p>\r\n<div class=\"osenc-links\">\r\n<a href=\"https:\/\/ct.semitanker.com\/what-are-halbach-arrays\/\">Halbach Array Guide<\/a>\r\n<a href=\"https:\/\/ct.semitanker.com\/neodymium-ring-magnets\/\">Neodymium Ring Magnets<\/a>\r\n<\/div>\r\n<\/div>\r\n<div class=\"osenc-section osenc-section--soft\">\r\n<div class=\"osenc-grid-2\">\r\n<div class=\"osenc-media\">\r\n<img loading=\"lazy\" decoding=\"async\" alt=\"OSENC surface and quality inspection for custom neodymium magnets\" height=\"900\" loading=\"lazy\" src=\"https:\/\/ct.semitanker.com\/wp-content\/uploads\/2026\/08\/segment-magnet-surface-inspection-osenc.webp\" width=\"1200\"\/>\r\n<\/div>\r\n<div>\r\n<div class=\"osenc-eyebrow\">Coating &amp; Surface<\/div>\r\n<h2>Nickel, Zinc and Epoxy Coating Options for Arc Projects<\/h2>\r\n<p>For neodymium arc magnet projects, OSENC specifies nickel, zinc or epoxy coating according to corrosion exposure, adhesive bonding, dimensional clearance, abrasion and appearance requirements. The approved coating system is locked with the drawing before production.<\/p>\r\n<p>Sintered NdFeB is brittle and corrosion-sensitive. We therefore control edge condition, coating integrity and adhesive compatibility as part of rotor-assembly readiness rather than treating coating as a decorative finish.<\/p>\r\n<div class=\"osenc-links\">\r\n<a href=\"https:\/\/ct.semitanker.com\/neodymium-magnet-coating\/\">Magnet Coating Guide<\/a>\r\n<a href=\"https:\/\/ct.semitanker.com\/epoxy-coating-for-magnets\/\">Epoxy Coated Magnets<\/a>\r\n<\/div>\r\n<\/div>\r\n<\/div>\r\n<\/div>\r\n<div class=\"osenc-section\">\r\n<div class=\"osenc-eyebrow\">Custom Geometry<\/div>\r\n<h2>Custom NdFeB Arc Magnets: Regular, Skewed and Large Segments<\/h2>\r\n<div class=\"osenc-grid-3\">\r\n<div class=\"osenc-card\"><h3>Regular Arc Segments<\/h3><p>30\u00b0, 45\u00b0, 60\u00b0, 90\u00b0 and 120\u00b0 are practical RFQ starting angles. We confirm the final angle, gap and segment count from the rotor drawing rather than forcing every design into a generic angle range.<\/p><\/div>\r\n<div class=\"osenc-card\"><h3>Skewed \/ Twisted Geometry<\/h3><p>Used only when the motor design calls for a controlled skew or non-standard arc. The effect on cogging or torque ripple must come from the motor design, not from a generic shape claim.<\/p><\/div>\r\n<div class=\"osenc-card\"><h3>Large Arc Segments<\/h3><p>Large designs are controlled from the drawing because material orientation, machining route, fragility, coating and magnetization can become the limiting factors before simple OD does.<\/p><\/div>\r\n<\/div>\r\n<\/div>\r\n<div class=\"osenc-section osenc-section--soft\">\r\n<div class=\"osenc-eyebrow\">Quality Control<\/div>\r\n<h2>What OSENC Controls Before Neodymium Segment Magnets Move into Assembly<\/h2>\r\n<p>OSENC controls raw-material grade, finished dimensions, coating condition, magnetization direction and project-defined magnetic performance. For motor projects, acceptance should focus on the measurements that matter to the rotor rather than one isolated Gauss number.<\/p>\r\n<div class=\"osenc-grid-3\">\r\n<div class=\"osenc-card\"><h3>Geometry<\/h3><p>Radius, radial thickness, axial length, arc angle and critical mating dimensions against the approved drawing.<\/p><\/div>\r\n<div class=\"osenc-card\"><h3>Surface &amp; Coating<\/h3><p>Visual condition, edge integrity and coating acceptance before magnets enter bonding or mechanical retention.<\/p><\/div>\r\n<div class=\"osenc-card\"><h3>Magnetic Direction<\/h3><p>Pole orientation and magnetization direction are verified so segment indexing matches the rotor or Halbach assembly plan.<\/p><\/div>\r\n<\/div>\r\n<\/div>\r\n<div class=\"osenc-section osenc-section--soft\">\r\n<div class=\"osenc-eyebrow\">Production Lock<\/div>\r\n<h2>What OSENC Locks Before Arc Magnets Move into Production<\/h2>\r\n<p>Production starts against one approved drawing and one controlled acceptance plan. The critical items below are locked before the sample is released into production approval.<\/p>\r\n<div class=\"osenc-table-wrap\">\r\n<table>\r\n<thead><tr><th>Control Item<\/th><th>OSENC Production Lock<\/th><\/tr><\/thead>\r\n<tbody>\r\n<tr><td data-label=\"Control Item\">Geometry<\/td><td data-label=\"OSENC Production Lock\">OD \/ ID or radii, radial thickness, axial length, arc angle and critical mating dimensions.<\/td><\/tr>\r\n<tr><td data-label=\"Control Item\">Material<\/td><td data-label=\"OSENC Production Lock\">Grade family plus HcJ requirement where demagnetization margin matters.<\/td><\/tr>\r\n<tr><td data-label=\"Control Item\">Magnetization<\/td><td data-label=\"OSENC Production Lock\">Orientation direction, pole direction, polarity and segment indexing.<\/td><\/tr>\r\n<tr><td data-label=\"Control Item\">Temperature<\/td><td data-label=\"OSENC Production Lock\">Continuous, peak and fault-condition temperature where applicable.<\/td><\/tr>\r\n<tr><td data-label=\"Control Item\">Coating<\/td><td data-label=\"OSENC Production Lock\">Finish, corrosion requirement, bonding condition and dimensional impact.<\/td><\/tr>\r\n<tr><td data-label=\"Control Item\">Assembly<\/td><td data-label=\"OSENC Production Lock\">Segment count, spacing, indexing and rotor \/ Halbach arrangement.<\/td><\/tr>\r\n<tr><td data-label=\"Control Item\">Inspection<\/td><td data-label=\"OSENC Production Lock\">Critical dimensions plus project-defined magnetic acceptance requirements.<\/td><\/tr>\r\n<\/tbody>\r\n<\/table>\r\n<\/div>\r\n<\/div>\r\n<div class=\"osenc-section\">\r\n<div class=\"osenc-eyebrow\">RFQ Checklist<\/div>\r\n<h2>Send These Inputs for an Accurate Neodymium Segment Magnet Quote<\/h2>\r\n<ol>\r\n<li><strong>2D \/ 3D drawing:<\/strong> OD\/ID or radii, axial length, radial thickness, arc angle and tolerances.<\/li>\r\n<li><strong>Segment layout:<\/strong> pieces per pole, pieces per ring and assembly indexing.<\/li>\r\n<li><strong>Grade \/ HcJ:<\/strong> material grade or target magnetic and demagnetization requirement.<\/li>\r\n<li><strong>Magnetization:<\/strong> direction arrow, pole orientation and any angle-defined pattern.<\/li>\r\n<li><strong>Working geometry:<\/strong> air gap, rotor\/stator dimensions and target magnetic output.<\/li>\r\n<li><strong>Temperature:<\/strong> continuous, peak and fault-condition temperature where applicable.<\/li>\r\n<li><strong>Coating:<\/strong> nickel, zinc, epoxy or the exact approved finish.<\/li>\r\n<li><strong>Quantity:<\/strong> sample quantity and expected production volume.<\/li>\r\n<\/ol>\r\n<a class=\"osenc-btn\" href=\"https:\/\/ct.semitanker.com\/contact-us\/\">Send Your Segment Magnet RFQ<\/a>\r\n<\/div>\r\n<div class=\"osenc-section osenc-section--soft\">\r\n<div class=\"osenc-grid-2\">\r\n<div>\r\n<div class=\"osenc-eyebrow\">Finished Parts &amp; Shipment<\/div>\r\n<h2>We Protect Arc Geometry and Coating Through Final Packing<\/h2>\r\n<p>Segment magnets are brittle and can attract each other abruptly during handling. OSENC controls the finished arc condition before packing, then uses protective shipment methods to reduce impact, coating damage and uncontrolled magnet-to-magnet contact.<\/p>\r\n<\/div>\r\n<div class=\"osenc-media\">\r\n<img loading=\"lazy\" decoding=\"async\" alt=\"OSENC protective export packaging for custom neodymium magnets\" height=\"900\" loading=\"lazy\" src=\"https:\/\/ct.semitanker.com\/wp-content\/uploads\/2026\/08\/segment-magnet-export-packaging-osenc.webp\" width=\"1200\"\/>\r\n<img loading=\"lazy\" decoding=\"async\" alt=\"Close-up of OSENC neodymium arc segment magnets\" height=\"900\" loading=\"lazy\" src=\"https:\/\/ct.semitanker.com\/wp-content\/uploads\/2026\/08\/neodymium-segment-magnets-closeup-osenc.webp\" style=\"margin-top:14px\" width=\"1200\"\/>\r\n<\/div>\r\n<\/div>\r\n<\/div>\r\n<div class=\"osenc-section\">\r\n<div class=\"osenc-eyebrow\">Buyer FAQ<\/div>\r\n<h2>Neodymium Segment Magnet FAQ<\/h2>\r\n<details class=\"osenc-faq-item\"><summary>What is a neodymium segment magnet?<\/summary><div class=\"osenc-faq-answer\"><p>A neodymium segment magnet is a curved sintered NdFeB magnet designed as one part of a circular or arc-shaped magnetic system. OSENC manufactures arc segments to drawing for motors, generators, couplings, rotors and other assemblies where geometry, magnetization and working gap must be controlled together.<\/p><\/div><\/details>\r\n<details class=\"osenc-faq-item\"><summary>Are segment magnets always cheaper than a one-piece ring magnet?<\/summary><div class=\"osenc-faq-answer\"><p>No. Segmenting a large ring or rotor can improve manufacturability and material use, but total cost also depends on segment count, machining, magnetization, tolerance, assembly method and inspection. OSENC compares the finished assembly requirement rather than assuming segmentation is always cheaper.<\/p><\/div><\/details>\r\n<details class=\"osenc-faq-item\"><summary>What dimensions should be shown on an arc magnet drawing?<\/summary><div class=\"osenc-faq-answer\"><p>Define outer radius or OD, inner radius or ID, radial thickness, axial length, arc angle, chord or reference dimensions, tolerances, coating and magnetization direction. A 2D drawing is strongly preferred because one diameter and one height do not fully define an arc segment.<\/p><\/div><\/details>\r\n<details class=\"osenc-faq-item\"><summary>What magnetization directions are used for neodymium arc magnets?<\/summary><div class=\"osenc-faq-answer\"><p>Standard Arc projects use Radially IN \/ Radially OUT approximated radial orientation, parallel orientation or drawing-defined linear magnetization. True radial anisotropic NdFeB requires dedicated orientation, tooling and magnetization evaluation before OSENC confirms the production route; true circumferential orientation is not presented as a standard NdFeB arc capability.<\/p><\/div><\/details>\r\n<details class=\"osenc-faq-item\"><summary>Which grades are available for OSENC neodymium segment magnets?<\/summary><div class=\"osenc-faq-answer\"><p>OSENC works with N35, N38, N40, N42, N45, N48, N50 and N52 energy grades for Arc projects, plus M, H, SH, UH and EH high-HcJ grade families. We select the final grade from required flux, HcJ, operating temperature, air gap and demagnetization margin.<\/p><\/div><\/details>\r\n<details class=\"osenc-faq-item\"><summary>Which coatings are available?<\/summary><div class=\"osenc-faq-answer\"><p>OSENC specifies nickel, zinc or epoxy according to humidity, corrosion exposure, assembly clearance, bonding method, abrasion and appearance. The approved coating system is locked with the finished-part drawing before production.<\/p><\/div><\/details>\r\n<details class=\"osenc-faq-item\"><summary>What information should I send for a motor arc magnet quotation?<\/summary><div class=\"osenc-faq-answer\"><p>Send the 2D or 3D drawing, OD\/ID or radii, axial length, arc angle, segment count per pole or ring, grade or magnetic target, magnetization direction, working gap, operating temperature, coating, tolerances, sample quantity and production volume.<\/p><\/div><\/details>\r\n<\/div>\r\n<div class=\"osenc-section\">\r\n<div class=\"osenc-cta\">\r\n<h2>Send Your Arc or Segment Magnet Drawing to OSENC<\/h2>\r\n<p>OSENC will define and lock the geometry, grade, HcJ requirement, temperature basis, coating, magnetization, segment layout, working gap and inspection requirements for quotation and sample release.<\/p>\r\n<a class=\"osenc-btn\" href=\"https:\/\/ct.semitanker.com\/contact-us\/\" style=\"background:#1a8a9e\">Request a Custom Arc Magnet Quote<\/a>\r\n<\/div>\r\n<\/div>\r\n<\/section>\r\n<script type=\"application\/ld+json\">{\r\n  \"@context\": \"https:\/\/schema.org\",\r\n  \"@graph\": [\r\n    {\r\n      \"@type\": \"WebSite\",\r\n      \"@id\": \"https:\/\/ct.semitanker.com\/#website\",\r\n      \"url\": \"https:\/\/ct.semitanker.com\/\",\r\n      \"name\": \"OSENC\"\r\n    },\r\n    {\r\n      \"@type\": \"Organization\",\r\n      \"@id\": \"https:\/\/ct.semitanker.com\/#organization\",\r\n      \"name\": \"OSENC\",\r\n      \"url\": \"https:\/\/ct.semitanker.com\/\"\r\n    },\r\n    {\r\n      \"@type\": \"Service\",\r\n      \"@id\": \"https:\/\/ct.semitanker.com\/neodymium-segment-magnets\/#service\",\r\n      \"name\": \"Custom Neodymium Segment Magnet Manufacturing\",\r\n      \"serviceType\": \"Custom NdFeB arc and segment magnet manufacturing\",\r\n      \"provider\": {\r\n        \"@id\": \"https:\/\/ct.semitanker.com\/#organization\"\r\n      },\r\n      \"url\": \"https:\/\/ct.semitanker.com\/neodymium-segment-magnets\/\",\r\n      \"description\": \"Custom sintered NdFeB arc and segment magnet manufacturing for motors, generators, couplings, rotors and Halbach assemblies with drawing-defined geometry, grade family, magnetization, coating and inspection requirements.\"\r\n    },\r\n    {\r\n      \"@type\": \"WebPage\",\r\n      \"@id\": \"https:\/\/ct.semitanker.com\/neodymium-segment-magnets\/#webpage\",\r\n      \"url\": \"https:\/\/ct.semitanker.com\/neodymium-segment-magnets\/\",\r\n      \"name\": \"Custom Neodymium Segment Magnets\",\r\n      \"isPartOf\": {\r\n        \"@id\": \"https:\/\/ct.semitanker.com\/#website\"\r\n      },\r\n      \"about\": {\r\n        \"@id\": \"https:\/\/ct.semitanker.com\/neodymium-segment-magnets\/#service\"\r\n      },\r\n      \"publisher\": {\r\n        \"@id\": \"https:\/\/ct.semitanker.com\/#organization\"\r\n      },\r\n      \"description\": \"Custom neodymium arc and segment magnets engineered to drawing for motor, generator, rotor, coupling and Halbach applications.\"\r\n    },\r\n    {\r\n      \"@type\": \"BreadcrumbList\",\r\n      \"@id\": \"https:\/\/ct.semitanker.com\/neodymium-segment-magnets\/#breadcrumb\",\r\n      \"itemListElement\": [\r\n        {\r\n          \"@type\": \"ListItem\",\r\n          \"position\": 1,\r\n          \"name\": \"Home\",\r\n          \"item\": \"https:\/\/ct.semitanker.com\/\"\r\n        },\r\n        {\r\n          \"@type\": \"ListItem\",\r\n          \"position\": 2,\r\n          \"name\": \"Neodymium Magnets\",\r\n          \"item\": \"https:\/\/ct.semitanker.com\/neodymium-magnets\/\"\r\n        },\r\n        {\r\n          \"@type\": \"ListItem\",\r\n          \"position\": 3,\r\n          \"name\": \"Neodymium Segment Magnets\",\r\n          \"item\": \"https:\/\/ct.semitanker.com\/neodymium-segment-magnets\/\"\r\n        }\r\n      ]\r\n    },\r\n    {\r\n      \"@type\": \"FAQPage\",\r\n      \"@id\": \"https:\/\/ct.semitanker.com\/neodymium-segment-magnets\/#faq\",\r\n      \"mainEntity\": [\r\n        {\r\n          \"@type\": \"Question\",\r\n          \"name\": \"What is a neodymium segment magnet?\",\r\n          \"acceptedAnswer\": {\r\n            \"@type\": \"Answer\",\r\n            \"text\": \"A neodymium segment magnet is a curved sintered NdFeB magnet designed as one part of a circular or arc-shaped magnetic system. OSENC manufactures arc segments to drawing for motors, generators, couplings, rotors and other assemblies where geometry, magnetization and working gap must be controlled together.\"\r\n          }\r\n        },\r\n        {\r\n          \"@type\": \"Question\",\r\n          \"name\": \"Are segment magnets always cheaper than a one-piece ring magnet?\",\r\n          \"acceptedAnswer\": {\r\n            \"@type\": \"Answer\",\r\n            \"text\": \"No. Segmenting a large ring or rotor can improve manufacturability and material use, but total cost also depends on segment count, machining, magnetization, tolerance, assembly method and inspection. OSENC compares the finished assembly requirement rather than assuming segmentation is always cheaper.\"\r\n          }\r\n        },\r\n        {\r\n          \"@type\": \"Question\",\r\n          \"name\": \"What dimensions should be shown on an arc magnet drawing?\",\r\n          \"acceptedAnswer\": {\r\n            \"@type\": \"Answer\",\r\n            \"text\": \"Define outer radius or OD, inner radius or ID, radial thickness, axial length, arc angle, chord or reference dimensions, tolerances, coating and magnetization direction. 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True radial anisotropic NdFeB requires dedicated orientation, tooling and magnetization evaluation before OSENC confirms the production route; true circumferential orientation is not presented as a standard NdFeB arc capability.\"\r\n          }\r\n        },\r\n        {\r\n          \"@type\": \"Question\",\r\n          \"name\": \"Which grades are available for OSENC neodymium segment magnets?\",\r\n          \"acceptedAnswer\": {\r\n            \"@type\": \"Answer\",\r\n            \"text\": \"OSENC works with N35, N38, N40, N42, N45, N48, N50 and N52 energy grades for Arc projects, plus M, H, SH, UH and EH high-HcJ grade families. We select the final grade from required flux, HcJ, operating temperature, air gap and demagnetization margin.\"\r\n          }\r\n        },\r\n        {\r\n          \"@type\": \"Question\",\r\n          \"name\": \"Which coatings are available?\",\r\n          \"acceptedAnswer\": {\r\n            \"@type\": \"Answer\",\r\n            \"text\": \"OSENC specifies nickel, zinc or epoxy according to humidity, corrosion exposure, assembly clearance, bonding method, abrasion and appearance. The approved coating system is locked with the finished-part drawing before production.\"\r\n          }\r\n        },\r\n        {\r\n          \"@type\": \"Question\",\r\n          \"name\": \"What information should I send for a motor arc magnet quotation?\",\r\n          \"acceptedAnswer\": {\r\n            \"@type\": \"Answer\",\r\n            \"text\": \"Send the 2D or 3D drawing, OD\/ID or radii, axial length, arc angle, segment count per pole or ring, grade or magnetic target, magnetization direction, working gap, operating temperature, coating, tolerances, sample quantity and production volume.\"\r\n          }\r\n        }\r\n      ]\r\n    }\r\n  ]\r\n}<\/script>\t\t\t\t<\/div>\n\t\t\n<\/div>\n\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Custom Arc \/ Segment NdFeB Custom Neodymium Segment Magnets OSENC manufactures custom neodymium segment magnets for motors, generators, magnetic couplings, rotors and segmented Halbach assemblies. We engineer the arc geometry, grade, magnetization, coating and finished dimensions around the actual magnetic circuit. Send the OD\/ID or radii, axial length, arc angle, segment count, working gap, operating [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":1297,"parent":0,"menu_order":25,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-357","page","type-page","status-publish","has-post-thumbnail","hentry"],"_links":{"self":[{"href":"https:\/\/ct.semitanker.com\/it\/wp-json\/wp\/v2\/pages\/357","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ct.semitanker.com\/it\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/ct.semitanker.com\/it\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/ct.semitanker.com\/it\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ct.semitanker.com\/it\/wp-json\/wp\/v2\/comments?post=357"}],"version-history":[{"count":6,"href":"https:\/\/ct.semitanker.com\/it\/wp-json\/wp\/v2\/pages\/357\/revisions"}],"predecessor-version":[{"id":8717,"href":"https:\/\/ct.semitanker.com\/it\/wp-json\/wp\/v2\/pages\/357\/revisions\/8717"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/ct.semitanker.com\/it\/wp-json\/wp\/v2\/media\/1297"}],"wp:attachment":[{"href":"https:\/\/ct.semitanker.com\/it\/wp-json\/wp\/v2\/media?parent=357"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}