{"id":5249,"date":"2026-08-19T05:51:34","date_gmt":"2026-08-19T05:51:34","guid":{"rendered":"https:\/\/spotlight-motor.com\/?post_type=product&#038;p=5249"},"modified":"2026-08-20T02:11:23","modified_gmt":"2026-08-20T02:11:23","slug":"sp28zwwc52-28-mm-brushless-coreless-dc-motor","status":"publish","type":"product","link":"https:\/\/spotlight-motor.com\/zh\/product\/sp28zwwc52-28-mm-brushless-coreless-dc-motor\/","title":{"rendered":"SP28ZWWC52 28 mm \u65e0\u5237\u7a7a\u5fc3\u676f\u76f4\u6d41\u7535\u673a"},"content":{"rendered":"<style id=\"sp28zwwc52-page-style\">\nbody.postid-5249{overflow-x:hidden}\nbody.postid-5249 [data-id=\"4e2fba0\"],body.postid-5249 [data-id=\"169d9d5\"],body.postid-5249 [data-id=\"4ab745c\"],body.postid-5249 [data-id=\"a65d5ba\"],body.postid-5249 [data-id=\"77d8c47\"],body.postid-5249 [data-id=\"79389ad\"],body.postid-5249 [data-id=\"8d9b055\"],body.postid-5249 [data-id=\"6b8732b\"],body.postid-5249 [data-id=\"bc89a15\"]{display:none!important}\nbody.postid-5249 [data-id=\"9b05c0a\"],body.postid-5249 [data-id=\"166d5d9\"],body.postid-5249 [data-id=\"166d5d9\"]>.elementor-widget-container{width:100%!important;max-width:none!important;margin:0!important;padding:0!important}\nbody.postid-5249 [data-id=\"6b5eb82\"]{background:radial-gradient(circle at 78% 42%,rgba(126,174,213,.18),transparent 34%),linear-gradient(135deg,#f7f8f9 0%,#eef2f5 100%)}\nbody.postid-5249 [data-id=\"3ccf48a\"] .elementor-widget-container{max-width:760px;font-size:clamp(42px,4vw,68px);font-weight:300;line-height:1.06;letter-spacing:-.035em;color:#101419}\nbody.postid-5249 [data-id=\"691a024\"],body.postid-5249 [data-id=\"691a024\"]>.elementor-widget-container{height:auto!important;min-height:29px;overflow:visible!important}body.postid-5249 [data-id=\"691a024\"]>.elementor-widget-container{margin:0!important}\nbody.postid-5249 [data-id=\"4ae4c9b\"] .elementor-widget-container{max-width:660px;font-size:19px;line-height:1.75;color:#48515b}\nbody.postid-5249 [data-id=\"0533c39\"] img{filter:drop-shadow(0 30px 38px rgba(14,26,38,.17));transform:scale(.9)}\n.sl-product-page{--sl-ink:#101419;--sl-muted:#66717d;--sl-blue:#8fb7d8;--sl-blue-strong:#4f84ae;--sl-line:#dfe5ea;--sl-surface:#f4f7f9;--sl-dark:#071017;color:var(--sl-ink);font-family:inherit}\n.sl-product-page *,.sl-product-page *::before,.sl-product-page *::after{box-sizing:border-box}.sl-product-page h2,.sl-product-page h3,.sl-product-page p{margin-top:0}\n.sl-fullbleed{position:relative;left:50%;width:100vw;margin-left:-50vw}.sl-inner{width:min(1440px,calc(100% - 64px));margin:0 auto}\n.sl-detail-nav{position:sticky;top:calc(var(--wp-admin--admin-bar--height,0px) + 120px);z-index:120;background:rgba(255,255,255,.94);border-top:1px solid var(--sl-line);border-bottom:1px solid var(--sl-line);backdrop-filter:blur(14px)}\n.sl-detail-nav.sl-fullbleed{left:auto;margin-left:calc(50% - 50vw)}.sl-detail-nav__inner{display:flex;align-items:center;gap:48px;min-height:76px;overflow-x:auto;scrollbar-width:none}.sl-detail-nav__inner::-webkit-scrollbar{display:none}\n.sl-detail-nav a{position:relative;flex:0 0 auto;color:#36414c;font-size:15px;font-weight:600;text-decoration:none}.sl-detail-nav a:focus:not(:focus-visible){outline:none}.sl-product-page section[id]{scroll-margin-top:210px}\n.sl-section{padding:108px 0}.sl-kicker{margin-bottom:18px;color:var(--sl-blue-strong);font-size:13px;font-weight:700;letter-spacing:.18em;text-transform:uppercase}.sl-title{max-width:900px;margin-bottom:26px;font-size:clamp(38px,4.2vw,64px);font-weight:300;line-height:1.08;letter-spacing:-.035em}.sl-lead{max-width:850px;margin-bottom:56px;color:var(--sl-muted);font-size:19px;line-height:1.75}\n.sl-features{background:#fff}.sl-feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}.sl-feature-card{min-height:340px;padding:42px 38px;border:1px solid var(--sl-line);background:linear-gradient(145deg,#fff 0%,#f6f9fb 100%);transition:transform .25s ease,box-shadow .25s ease}.sl-feature-card:hover{transform:translateY(-7px);box-shadow:0 26px 54px rgba(18,39,58,.10)}.sl-feature-value{margin-bottom:70px;color:var(--sl-blue-strong);font-size:30px;font-weight:600}.sl-feature-card h3{margin-bottom:15px;font-size:24px;font-weight:500}.sl-feature-card p{margin-bottom:0;color:var(--sl-muted);font-size:16px;line-height:1.7}\n.sl-tech{background:var(--sl-surface)}.sl-spec-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;margin-bottom:56px;overflow:hidden;border:1px solid var(--sl-line);background:var(--sl-line)}.sl-spec{padding:28px 30px;background:#fff}.sl-spec strong{display:block;margin-bottom:7px;font-size:25px;font-weight:500}.sl-spec span{color:var(--sl-muted);font-size:13px;letter-spacing:.07em;text-transform:uppercase}\n.sl-parameter-panel{min-width:0;padding:32px;border:1px solid var(--sl-line);background:#fff}.sl-parameter-head{margin-bottom:22px}.sl-parameter-head h3,.sl-drawing-group h3{margin:0;font-size:28px;font-weight:500}.sl-table-scroll{display:block;max-width:100%;overflow-x:auto;overflow-y:hidden;-webkit-overflow-scrolling:touch}.sl-data-table{width:100%;min-width:760px;margin:0;border-collapse:collapse;background:#fff}.sl-data-table th,.sl-data-table td{padding:14px 16px;border:1px solid var(--sl-line);text-align:left;vertical-align:middle;white-space:nowrap}.sl-data-table thead th{background:#edf2f5;color:#26323d;font-size:12px;font-weight:700;text-transform:uppercase}.sl-data-table tbody th{background:#f3f6f8;color:#26323d;font-size:12px;font-weight:700}.sl-data-table tbody td{color:#4f5b66;font-size:14px}.sl-data-table tbody tr:nth-child(even) td{background:#f7f9fa}\n.sl-drawing-group{margin-top:70px}.sl-drawing-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;margin-top:30px}.sl-drawing-card{display:flex;flex-direction:column;min-width:0;margin:0;padding:24px;border:1px solid var(--sl-line);background:#fff}.sl-drawing-frame{display:grid;place-items:center;width:100%;height:440px}.sl-drawing-card img{display:block;width:100%;height:100%;object-fit:contain}.sl-drawing-grid--three .sl-drawing-card:last-child{grid-column:1\/-1;width:calc(50% - 12px);justify-self:center}.sl-drawing-card figcaption{margin-top:18px;padding-top:16px;border-top:1px solid var(--sl-line);color:var(--sl-muted);font-size:14px;line-height:1.55}\n.sl-showcase{overflow:hidden;background:radial-gradient(circle at 74% 48%,rgba(105,164,209,.24),transparent 28%),var(--sl-dark);color:#fff}.sl-showcase-grid{display:grid;grid-template-columns:.92fr 1.08fr;align-items:center;gap:70px;min-height:760px}.sl-showcase .sl-kicker{color:#9cc6e5}.sl-showcase .sl-title{color:#fff}.sl-showcase p{max-width:650px;color:#b9c5ce;font-size:18px;line-height:1.75}.sl-checks{display:grid;gap:18px;margin:34px 0 0;padding:0;list-style:none}.sl-checks li{color:#e5edf3;font-size:16px}.sl-product-visual{position:relative;min-height:650px}.sl-product-visual img{position:absolute;z-index:2;inset:50% auto auto 50%;width:min(700px,96%);transform:translate(-50%,-50%);filter:drop-shadow(0 40px 42px rgba(0,0,0,.38))}\n.sl-applications{background:#fff}.sl-application-grid{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--sl-line);border-left:1px solid var(--sl-line)}.sl-application-card{min-height:270px;padding:34px 28px;border-right:1px solid var(--sl-line);border-bottom:1px solid var(--sl-line)}.sl-application-card b{display:block;margin-bottom:72px;color:var(--sl-blue-strong);font-size:14px}.sl-application-card h3{margin-bottom:12px;font-size:20px;font-weight:500}.sl-application-card p{margin-bottom:0;color:var(--sl-muted);font-size:15px;line-height:1.65}\n.sl-integration{background:#edf2f5}.sl-integration-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:80px}.sl-data-list{border-top:1px solid #cfd9e1}.sl-data-row{display:grid;grid-template-columns:1fr 1.2fr;gap:24px;padding:22px 0;border-bottom:1px solid #cfd9e1}.sl-data-row span{color:var(--sl-muted)}.sl-data-row strong{font-weight:600}\n.sl-cta{background:linear-gradient(110deg,#7aa5c7 0%,#a8c8df 100%)}.sl-cta-inner{display:grid;grid-template-columns:1fr auto;align-items:center;gap:50px;min-height:400px}.sl-cta h2{max-width:930px;margin-bottom:18px;color:#071017;font-size:clamp(40px,5vw,72px);font-weight:300;line-height:1.04}.sl-cta p{margin-bottom:0;color:#233745;font-size:18px}.sl-button{display:inline-flex;align-items:center;justify-content:center;min-width:210px;min-height:58px;padding:16px 26px;color:#fff!important;background:#071017;font-size:14px;font-weight:700;text-decoration:none!important;text-transform:uppercase}.sl-related{padding:70px 0;background:#fff}.sl-related-inner{display:flex;align-items:center;justify-content:space-between;gap:40px}.sl-related h3{margin-bottom:6px;font-size:27px;font-weight:400}.sl-related p{margin-bottom:0;color:var(--sl-muted)}.sl-related a{color:var(--sl-ink);font-weight:700;text-decoration:none;border-bottom:1px solid}\n@media(max-width:1024px){.sl-inner{width:min(100% - 44px,980px)}.sl-feature-grid,.sl-application-grid{grid-template-columns:repeat(2,1fr)}.sl-showcase-grid,.sl-integration-grid{grid-template-columns:1fr}.sl-detail-nav{top:calc(var(--wp-admin--admin-bar--height,0px) + 86px)}}\n@media(max-width:767px){body.postid-5249 [data-id=\"3ccf48a\"] .elementor-widget-container{font-size:clamp(34px,9.5vw,48px)}body.postid-5249 [data-id=\"4ae4c9b\"] .elementor-widget-container{font-size:16px}.sl-fullbleed{left:auto;width:100%;margin-left:0}.sl-inner{width:calc(100% - 36px)}.sl-detail-nav{top:calc(var(--wp-admin--admin-bar--height,0px) + 72px)}.sl-detail-nav__inner{gap:30px;min-height:64px}.sl-section{padding:72px 0}.sl-title{font-size:36px}.sl-lead{font-size:17px}.sl-feature-grid,.sl-application-grid,.sl-spec-grid,.sl-drawing-grid{grid-template-columns:1fr}.sl-feature-card{min-height:280px;padding:34px 28px}.sl-parameter-panel{padding:22px 18px}.sl-table-scroll{overflow-x:auto!important}.sl-data-table{width:520px;min-width:520px;table-layout:fixed}.sl-data-table thead th:nth-child(2),.sl-data-table tbody td:nth-child(2){width:132px!important;min-width:132px!important;max-width:132px!important}.sl-data-table thead th:nth-child(3),.sl-data-table tbody td:nth-child(3){width:190px!important;min-width:190px!important;max-width:190px!important;white-space:normal;text-align:right}.sl-data-table--gearbox{width:920px!important;min-width:920px!important;table-layout:fixed}.sl-data-table--gearbox thead th:nth-child(n+2),.sl-data-table--gearbox tbody td:nth-child(n+2){width:128px!important;min-width:128px!important;max-width:128px!important;text-align:center}.sl-data-table thead th:first-child,.sl-data-table tbody th{position:sticky;left:0;z-index:2;width:180px!important;min-width:180px!important;max-width:180px!important;white-space:normal}.sl-drawing-grid--three .sl-drawing-card:last-child{grid-column:auto;width:100%}.sl-drawing-card{padding:14px}.sl-drawing-frame{height:300px}.sl-showcase-grid{gap:30px;padding:80px 0}.sl-product-visual{min-height:420px}.sl-application-grid{border-top:0}.sl-integration-grid{gap:50px}.sl-data-row{grid-template-columns:1fr;gap:7px}.sl-cta-inner{grid-template-columns:1fr;min-height:520px;padding:60px 0}.sl-related-inner{align-items:flex-start;flex-direction:column}}\n@media(max-width:767px){body.postid-5249 .eael-breadcrumbs__content.woocommerce-breadcrumb{max-width:calc(100vw - 20px)!important;white-space:normal!important;overflow-wrap:anywhere;word-break:break-word}}\n@media(prefers-reduced-motion:reduce){.sl-feature-card{transition:none}.sl-feature-card:hover{transform:none;box-shadow:none}}\n<\/style>\n<style id=\"sp28zwwc52-series-overrides\">\n.sl-data-table--series{min-width:1420px}.sl-data-table--series thead th:first-child,.sl-data-table--series tbody th{min-width:255px}.sl-data-table--series thead th:nth-child(2),.sl-data-table--series tbody td:nth-child(2){min-width:100px}.sl-data-table--series thead th:nth-child(n+3),.sl-data-table--series tbody td:nth-child(n+3){min-width:190px;text-align:center}\n.sl-drawing-grid--five .sl-drawing-card:last-child{grid-column:1\/-1;width:calc(50% - 12px);justify-self:center}\n@media(max-width:767px){body.postid-5249 .eael-breadcrumbs__content.woocommerce-breadcrumb{display:flex!important;flex-wrap:nowrap!important;max-width:100%!important;overflow-x:auto!important;overflow-y:hidden!important;white-space:nowrap!important;overflow-wrap:normal!important;word-break:normal!important;-webkit-overflow-scrolling:touch;scrollbar-width:none}body.postid-5249 .eael-breadcrumbs__content.woocommerce-breadcrumb::-webkit-scrollbar{display:none}body.postid-5249 .eael-breadcrumbs__content.woocommerce-breadcrumb>a,body.postid-5249 .eael-breadcrumbs__content.woocommerce-breadcrumb>.eael-breadcrumb-separator{flex:0 0 auto}.sl-data-table--series{width:1420px!important;min-width:1420px!important;table-layout:fixed}.sl-data-table--series thead th:first-child,.sl-data-table--series tbody th{width:245px!important;min-width:245px!important;max-width:245px!important}.sl-data-table--series thead th:nth-child(2),.sl-data-table--series tbody td:nth-child(2){width:95px!important;min-width:95px!important;max-width:95px!important}.sl-data-table--series thead th:nth-child(n+3),.sl-data-table--series tbody td:nth-child(n+3){width:205px!important;min-width:205px!important;max-width:205px!important;white-space:normal}.sl-drawing-grid--five .sl-drawing-card:last-child{grid-column:auto;width:100%}}\n<\/style>\n<style>\n.sl-curve-frame{position:relative;overflow:hidden;background:#fff}\n.sl-curve-legend{position:absolute;z-index:2;top:0;left:0;right:0;display:flex;align-items:flex-start;justify-content:space-between;gap:18px;min-height:68px;padding:8px 14px;background:#fff;font-size:13px;font-weight:700;line-height:1.35}\n.sl-curve-legend__series{display:flex;flex-wrap:wrap;gap:6px 15px}\n.sl-curve-legend__series span:nth-child(1){color:#009fd5}.sl-curve-legend__series span:nth-child(2){color:#009a44}.sl-curve-legend__series span:nth-child(3){color:#d7190f}.sl-curve-legend__series span:nth-child(4){color:#222}\n.sl-curve-legend__config{flex:0 0 auto;color:#222;text-align:right}\n@media(max-width:767px){.sl-curve-legend{min-height:62px;padding:7px 9px;font-size:10px}.sl-curve-legend__series{gap:3px 8px}}\n<\/style>\n<div class=\"sl-product-page\">\n<nav class=\"sl-detail-nav sl-fullbleed\" aria-label=\"Product detail navigation\">\n<div class=\"sl-inner sl-detail-nav__inner\"><a href=\"#sl-features\">Product benefits<\/a><a href=\"#sl-technical\">Technical data<\/a><a href=\"#sl-integration\">Integration<\/a><a href=\"#sl-applications\">Applications<\/a><a href=\"#sl-consultation\">Request consultation<\/a><\/div>\n<\/nav>\n<section id=\"sl-features\" class=\"sl-section sl-features sl-fullbleed\">\n<div class=\"sl-inner\">\n<div class=\"sl-kicker\">28 mm brushless coreless DC motor<\/div>\n<h2 class=\"sl-title\">Smooth brushless performance in a compact 28 mm frame<\/h2>\n<p class=\"sl-lead\">The SP28ZWWC52 28 mm brushless coreless DC motor uses a slotless rotor structure and Hall feedback for responsive electronic commutation. Five verified winding configurations cover 12 to 48 V operation for compact precision drive systems.<\/p>\n<div class=\"sl-feature-grid\">\n<article class=\"sl-feature-card\">\n<div class=\"sl-feature-value\">28 mm<\/div>\n<h3>Compact motor diameter<\/h3>\n<p>The cylindrical 28 mm frame supports equipment with constrained installation space.<\/p>\n<\/article>\n<article class=\"sl-feature-card\">\n<div class=\"sl-feature-value\">8,430 rpm<\/div>\n<h3>Fast rated operation<\/h3>\n<p>Available windings reach rated speeds up to 8,430 rpm while retaining smooth response.<\/p>\n<\/article>\n<article class=\"sl-feature-card\">\n<div class=\"sl-feature-value\">50 mN&middot;m<\/div>\n<h3>Rated torque range<\/h3>\n<p>The two-pole-pair 24 V configuration provides up to 50 mN&middot;m rated torque.<\/p>\n<\/article>\n<\/div>\n<\/div>\n<\/section>\n<section id=\"sl-technical\" class=\"sl-section sl-tech sl-fullbleed\">\n<div class=\"sl-inner\">\n<div class=\"sl-kicker\">Engineering data<\/div>\n<h2 class=\"sl-title\">Electrical and mechanical specifications<\/h2>\n<div class=\"sl-spec-grid\">\n<div class=\"sl-spec\"><strong>28 mm<\/strong><span>Motor size<\/span><\/div>\n<div class=\"sl-spec\"><strong>12&ndash;48 V<\/strong><span>Rated voltage<\/span><\/div>\n<div class=\"sl-spec\"><strong>32&ndash;50 mN&middot;m<\/strong><span>Rated torque<\/span><\/div>\n<div class=\"sl-spec\"><strong>6,970&ndash;8,430 rpm<\/strong><span>Rated speed<\/span><\/div>\n<\/div>\n<article class=\"sl-parameter-panel\">\n<div class=\"sl-parameter-head\">\n<div class=\"sl-kicker\">Motor selection<\/div>\n<h3>SP28ZWWC52 winding specifications<\/h3>\n<\/div>\n<div class=\"sl-table-scroll\">\n<table class=\"sl-data-table sl-data-table--series\">\n<thead>\n<tr>\n<th>Parameter<\/th>\n<th>Unit<\/th>\n<th>28ZWWC52 \/ 12 V<\/th>\n<th>28ZWWC52 \/ 24 V<\/th>\n<th>28ZWWC52 \/ 36 V<\/th>\n<th>28ZWWC52 \/ 48 V<\/th>\n<th>28ZWWC52 \/ 24 V (2 pole pairs)<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<th>Pole pairs<\/th>\n<td>&mdash;<\/td>\n<td>1<\/td>\n<td>1<\/td>\n<td>1<\/td>\n<td>1<\/td>\n<td>2<\/td>\n<\/tr>\n<tr>\n<th>Phase resistance<\/th>\n<td>&Omega;<\/td>\n<td>0.52<\/td>\n<td>1.7<\/td>\n<td>4.3<\/td>\n<td>6.6<\/td>\n<td>1.6<\/td>\n<\/tr>\n<tr>\n<th>Phase inductance<\/th>\n<td>mH<\/td>\n<td>0.0495<\/td>\n<td>0.178<\/td>\n<td>0.42<\/td>\n<td>0.77<\/td>\n<td>0.13<\/td>\n<\/tr>\n<tr>\n<th>Winding connection<\/th>\n<td>&mdash;<\/td>\n<td>Star<\/td>\n<td>Star<\/td>\n<td>Star<\/td>\n<td>Star<\/td>\n<td>Star<\/td>\n<\/tr>\n<tr>\n<th>Insulation class<\/th>\n<td>&mdash;<\/td>\n<td>B<\/td>\n<td>B<\/td>\n<td>B<\/td>\n<td>B<\/td>\n<td>B<\/td>\n<\/tr>\n<tr>\n<th>Duty cycle<\/th>\n<td>&mdash;<\/td>\n<td>S2<\/td>\n<td>S2<\/td>\n<td>S2<\/td>\n<td>S2<\/td>\n<td>S2<\/td>\n<\/tr>\n<tr>\n<th>Feedback<\/th>\n<td>&mdash;<\/td>\n<td>Hall elements<\/td>\n<td>Hall elements<\/td>\n<td>Hall elements<\/td>\n<td>Hall elements<\/td>\n<td>Hall elements<\/td>\n<\/tr>\n<tr>\n<th>Commutation angle<\/th>\n<td>&mdash;<\/td>\n<td>120&deg;<\/td>\n<td>120&deg;<\/td>\n<td>120&deg;<\/td>\n<td>120&deg;<\/td>\n<td>120&deg;<\/td>\n<\/tr>\n<tr>\n<th>Dielectric strength<\/th>\n<td>&mdash;<\/td>\n<td>500 VAC \/ 1 kHz \/ 1 mA \/ 1 s<\/td>\n<td>500 VAC \/ 1 kHz \/ 1 mA \/ 1 s<\/td>\n<td>500 VAC \/ 1 kHz \/ 1 mA \/ 1 s<\/td>\n<td>500 VAC \/ 1 kHz \/ 1 mA \/ 1 s<\/td>\n<td>500 VAC \/ 1 kHz \/ 1 mA \/ 1 s<\/td>\n<\/tr>\n<tr>\n<th>Insulation resistance<\/th>\n<td>&mdash;<\/td>\n<td>100 M&Omega; \/ 500 VDC<\/td>\n<td>100 M&Omega; \/ 500 VDC<\/td>\n<td>100 M&Omega; \/ 500 VDC<\/td>\n<td>100 M&Omega; \/ 500 VDC<\/td>\n<td>100 M&Omega; \/ 500 VDC<\/td>\n<\/tr>\n<tr>\n<th>Weight<\/th>\n<td>g<\/td>\n<td>170<\/td>\n<td>170<\/td>\n<td>170<\/td>\n<td>170<\/td>\n<td>170<\/td>\n<\/tr>\n<tr>\n<th>Rated voltage<\/th>\n<td>V<\/td>\n<td>12<\/td>\n<td>24<\/td>\n<td>36<\/td>\n<td>48<\/td>\n<td>24<\/td>\n<\/tr>\n<tr>\n<th>Rated power<\/th>\n<td>W<\/td>\n<td>30<\/td>\n<td>34<\/td>\n<td>35<\/td>\n<td>35<\/td>\n<td>37<\/td>\n<\/tr>\n<tr>\n<th>Rated torque<\/th>\n<td>mN&middot;m<\/td>\n<td>32<\/td>\n<td>32<\/td>\n<td>32<\/td>\n<td>34<\/td>\n<td>50<\/td>\n<\/tr>\n<tr>\n<th>Rated speed<\/th>\n<td>rpm<\/td>\n<td>6,970<\/td>\n<td>8,430<\/td>\n<td>8,370<\/td>\n<td>8,340<\/td>\n<td>7,000<\/td>\n<\/tr>\n<tr>\n<th>Rated current<\/th>\n<td>A<\/td>\n<td>3.13<\/td>\n<td>1.69<\/td>\n<td>1.17<\/td>\n<td>0.86<\/td>\n<td>2<\/td>\n<\/tr>\n<tr>\n<th>No-load speed<\/th>\n<td>rpm<\/td>\n<td>9,270<\/td>\n<td>9,680<\/td>\n<td>9,500<\/td>\n<td>9,400<\/td>\n<td>8,500<\/td>\n<\/tr>\n<tr>\n<th>No-load current<\/th>\n<td>A<\/td>\n<td>0.2<\/td>\n<td>0.11<\/td>\n<td>0.084<\/td>\n<td>0.061<\/td>\n<td>0.12<\/td>\n<\/tr>\n<tr>\n<th>Motor efficiency<\/th>\n<td>%<\/td>\n<td>80<\/td>\n<td>84<\/td>\n<td>83<\/td>\n<td>85<\/td>\n<td>81.5<\/td>\n<\/tr>\n<tr>\n<th>Noise<\/th>\n<td>dB<\/td>\n<td>&lt;50<\/td>\n<td>&lt;50<\/td>\n<td>&lt;50<\/td>\n<td>&lt;50<\/td>\n<td>&lt;50<\/td>\n<\/tr>\n<tr>\n<th>Thermal resistance<\/th>\n<td>K\/W<\/td>\n<td>0.67<\/td>\n<td>0.69<\/td>\n<td>0.73<\/td>\n<td>0.64<\/td>\n<td>0.7<\/td>\n<\/tr>\n<tr>\n<th>Thermal time constant<\/th>\n<td>s<\/td>\n<td>1,200<\/td>\n<td>1,200<\/td>\n<td>1,080<\/td>\n<td>1,100<\/td>\n<td>880<\/td>\n<\/tr>\n<tr>\n<th>Ambient temperature<\/th>\n<td>&deg;C<\/td>\n<td>23<\/td>\n<td>24<\/td>\n<td>27<\/td>\n<td>25<\/td>\n<td>21.2<\/td>\n<\/tr>\n<tr>\n<th>Maximum winding temperature<\/th>\n<td>&deg;C<\/td>\n<td>43.2<\/td>\n<td>47.3<\/td>\n<td>52.5<\/td>\n<td>47.4<\/td>\n<td>46.7<\/td>\n<\/tr>\n<tr>\n<th>Torque constant<\/th>\n<td>mN&middot;m\/A<\/td>\n<td>10.24<\/td>\n<td>18.97<\/td>\n<td>27.32<\/td>\n<td>39.63<\/td>\n<td>25<\/td>\n<\/tr>\n<tr>\n<th>Back-EMF constant, peak<\/th>\n<td>V\/Krpm<\/td>\n<td>1.52<\/td>\n<td>2.81<\/td>\n<td>4.04<\/td>\n<td>5.87<\/td>\n<td>3.7<\/td>\n<\/tr>\n<tr>\n<th>Back-EMF constant, effective<\/th>\n<td>V\/Krpm<\/td>\n<td>1.07<\/td>\n<td>1.99<\/td>\n<td>2.86<\/td>\n<td>4.15<\/td>\n<td>2.62<\/td>\n<\/tr>\n<tr>\n<th>Peak torque<\/th>\n<td>mN&middot;m<\/td>\n<td>236.31<\/td>\n<td>267.87<\/td>\n<td>228.72<\/td>\n<td>288.25<\/td>\n<td>375<\/td>\n<\/tr>\n<tr>\n<th>Peak current<\/th>\n<td>A<\/td>\n<td>23<\/td>\n<td>14<\/td>\n<td>8<\/td>\n<td>7<\/td>\n<td>15<\/td>\n<\/tr>\n<tr>\n<th>Rotor inertia<\/th>\n<td>g&middot;cm&sup2;<\/td>\n<td>10.2<\/td>\n<td>10.2<\/td>\n<td>10.2<\/td>\n<td>10.2<\/td>\n<td>10.2<\/td>\n<\/tr>\n<tr>\n<th>Mechanical time constant<\/th>\n<td>ms<\/td>\n<td>5.06<\/td>\n<td>4.82<\/td>\n<td>5.88<\/td>\n<td>4.29<\/td>\n<td>2.61<\/td>\n<\/tr>\n<tr>\n<th>End cap<\/th>\n<td>&mdash;<\/td>\n<td>Stainless steel<\/td>\n<td>Stainless steel<\/td>\n<td>Stainless steel<\/td>\n<td>Stainless steel<\/td>\n<td>Stainless steel<\/td>\n<\/tr>\n<tr>\n<th>Bearing<\/th>\n<td>&mdash;<\/td>\n<td>Deep-groove ball bearing<\/td>\n<td>Deep-groove ball bearing<\/td>\n<td>Deep-groove ball bearing<\/td>\n<td>Deep-groove ball bearing<\/td>\n<td>Deep-groove ball bearing<\/td>\n<\/tr>\n<tr>\n<th>Magnet<\/th>\n<td>&mdash;<\/td>\n<td>Sintered NdFeB<\/td>\n<td>Sintered NdFeB<\/td>\n<td>Sintered NdFeB<\/td>\n<td>Sintered NdFeB<\/td>\n<td>Sintered NdFeB<\/td>\n<\/tr>\n<tr>\n<th>Shaft<\/th>\n<td>&mdash;<\/td>\n<td>Carbon steel<\/td>\n<td>Carbon steel<\/td>\n<td>Carbon steel<\/td>\n<td>Carbon steel<\/td>\n<td>Carbon steel<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/article>\n<div class=\"sl-drawing-group\">\n<div class=\"sl-kicker\">Technical drawings<\/div>\n<h3>Dimensions and performance characteristics<\/h3>\n<div class=\"sl-drawing-grid sl-drawing-grid--three\">\n<figure class=\"sl-drawing-card\">\n<div class=\"sl-drawing-frame\"><img decoding=\"async\" src=\"https:\/\/spotlight-motor.com\/wp-content\/uploads\/2026\/08\/sp28zwwc52-mechanical-dimensions.png\" alt=\"SP28ZWWC52 28 mm brushless coreless DC motor dimensions\" title=\"SP28ZWWC52 28 mm Brushless Coreless DC Motor\"><\/div><figcaption>Motor dimensions, shaft geometry, mounting features and lead arrangement.<\/figcaption><\/figure>\n<figure class=\"sl-drawing-card\">\n<div class=\"sl-drawing-frame sl-curve-frame\">\n<div class=\"sl-curve-legend\">\n<div class=\"sl-curve-legend__series\"><span>Efficiency (%)<\/span><span>Current (A)<\/span><span>Output power (W)<\/span><span>Speed (r\/min)<\/span><\/div>\n<div class=\"sl-curve-legend__config\">2 pole pairs &middot; 24 VDC<\/div>\n<\/div>\n<p><img decoding=\"async\" src=\"https:\/\/spotlight-motor.com\/wp-content\/uploads\/2026\/08\/sp28zwwc52-24v-2pp-performance-curve.jpg\" alt=\"SP28ZWWC52 24 V two-pole-pair performance curve\" title=\"SP28ZWWC52 28 mm Brushless Coreless DC Motor\"><\/div><figcaption>24 V two-pole-pair efficiency, current, output power and speed characteristics over torque.<\/figcaption><\/figure>\n<figure class=\"sl-drawing-card\">\n<div class=\"sl-drawing-frame sl-curve-frame\">\n<div class=\"sl-curve-legend\">\n<div class=\"sl-curve-legend__series\"><span>Efficiency (%)<\/span><span>Current (A)<\/span><span>Output power (W)<\/span><span>Speed (r\/min)<\/span><\/div>\n<div class=\"sl-curve-legend__config\">1 pole pair &middot; 36 VDC<\/div>\n<\/div>\n<p><img decoding=\"async\" src=\"https:\/\/spotlight-motor.com\/wp-content\/uploads\/2026\/08\/sp28zwwc52-36v-1pp-performance-curve.jpg\" alt=\"SP28ZWWC52 36 V one-pole-pair performance curve\" title=\"SP28ZWWC52 28 mm Brushless Coreless DC Motor\"><\/div><figcaption>36 V one-pole-pair efficiency, current, output power and speed characteristics over torque.<\/figcaption><\/figure>\n<\/div>\n<\/div><\/div>\n<\/section>\n<section id=\"sl-integration\" class=\"sl-section sl-showcase sl-fullbleed\">\n<div class=\"sl-inner sl-showcase-grid\">\n<div>\n<div class=\"sl-kicker\">Compact motion<\/div>\n<h2 class=\"sl-title\">Coreless construction for rapid and smooth response<\/h2>\n<p>The slotless magnetic circuit reduces cogging-related torque pulsation, while low rotor inertia supports fast acceleration and deceleration. Hall feedback and 120-degree commutation simplify integration with compatible brushless controllers.<\/p>\n<ul class=\"sl-checks\">\n<li>Five verified 12 to 48 V winding configurations<\/li>\n<li>Hall-element feedback with 120-degree commutation<\/li>\n<li>Deep-groove ball bearings and stainless-steel end cap<\/li>\n<\/ul>\n<\/div>\n<div class=\"sl-product-visual\"><img decoding=\"async\" src=\"https:\/\/spotlight-motor.com\/wp-content\/uploads\/2026\/08\/sp28zwwc52-28mm-brushless-coreless-dc-motor.png\" alt=\"SP28ZWWC52 28 mm brushless coreless DC motor\" title=\"SP28ZWWC52 28 mm Brushless Coreless DC Motor\"><\/div>\n<\/div>\n<\/section>\n<section id=\"sl-applications\" class=\"sl-section sl-applications sl-fullbleed\">\n<div class=\"sl-inner\">\n<div class=\"sl-kicker\">Application areas<\/div>\n<h2 class=\"sl-title\">Precision equipment requiring compact responsive motion<\/h2>\n<div class=\"sl-application-grid\">\n<article class=\"sl-application-card\"><b>01<\/b><\/p>\n<h3>Medical equipment<\/h3>\n<p>Compact pumps and instruments requiring smooth, responsive brushless drive.<\/p>\n<\/article>\n<article class=\"sl-application-card\"><b>02<\/b><\/p>\n<h3>Robotics<\/h3>\n<p>Small joints, grippers and mobile mechanisms with constrained diameter.<\/p>\n<\/article>\n<article class=\"sl-application-card\"><b>03<\/b><\/p>\n<h3>Precision instruments<\/h3>\n<p>Low-noise actuation for optical, laboratory and measurement equipment.<\/p>\n<\/article>\n<article class=\"sl-application-card\"><b>04<\/b><\/p>\n<h3>Miniature servo systems<\/h3>\n<p>Fast follow-up motion in compact positioning and automation assemblies.<\/p>\n<\/article>\n<\/div>\n<\/div>\n<\/section>\n<section class=\"sl-section sl-integration sl-fullbleed\">\n<div class=\"sl-inner sl-integration-grid\">\n<div>\n<div class=\"sl-kicker\">Integration data<\/div>\n<h2 class=\"sl-title\">Selection and installation information<\/h2>\n<p class=\"sl-lead\">Select the winding according to supply voltage, required torque-speed point, duty cycle, controller and thermal environment.<\/p>\n<\/div>\n<div class=\"sl-data-list\">\n<div class=\"sl-data-row\"><span>Series<\/span><strong>SP28ZWWC52<\/strong><\/div>\n<div class=\"sl-data-row\"><span>Frame diameter<\/span><strong>28 mm<\/strong><\/div>\n<div class=\"sl-data-row\"><span>Rated voltage range<\/span><strong>12&ndash;48 VDC<\/strong><\/div>\n<div class=\"sl-data-row\"><span>Rated operating range<\/span><strong>32&ndash;50 mN&middot;m at 6,970&ndash;8,430 rpm<\/strong><\/div>\n<div class=\"sl-data-row\"><span>Duty<\/span><strong>S2<\/strong><\/div>\n<div class=\"sl-data-row\"><span>Feedback<\/span><strong>Hall elements<\/strong><\/div>\n<div class=\"sl-data-row\"><span>Winding connection<\/span><strong>Star<\/strong><\/div>\n<\/div>\n<\/div>\n<\/section>\n<section id=\"sl-consultation\" class=\"sl-cta sl-fullbleed\">\n<div class=\"sl-inner sl-cta-inner\">\n<div>\n<h2>Discuss your 28 mm drive requirements<\/h2>\n<p>Share the required speed, torque, voltage, duty cycle, controller and installation constraints for configuration support.<\/p>\n<\/div>\n<p><a class=\"sl-button\" href=\"https:\/\/spotlight-motor.com\/contact\/\">Contact us<\/a><\/div>\n<\/section>\n<section class=\"sl-related sl-fullbleed\">\n<div class=\"sl-inner sl-related-inner\">\n<div>\n<h3>Explore precision micro motors and actuators<\/h3>\n<p>Review additional compact brushless coreless drive platforms.<\/p>\n<\/div>\n<p><a href=\"https:\/\/spotlight-motor.com\/product-category\/precision-micro-motors-actuators\/coreless-dc-brushless-motor\/\">View related products<\/a><\/div>\n<\/section>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>SP28ZWWC52 \u662f\u4e00\u6b3e 28 mm \u65e0\u5237\u7a7a\u5fc3\u676f\u76f4\u6d41\u7535\u673a\uff0c\u63d0\u4f9b 12\u201348 V \u7ed5\u7ec4\u9009\u9879\uff0c\u989d\u5b9a\u8f6c\u77e9\u4e3a 32\u201350 mN\u00b7m\uff0c\u989d\u5b9a\u8f6c\u901f\u6700\u9ad8 8,430 rpm\uff0c\u9002\u7528\u4e8e\u7d27\u51d1\u578b\u7cbe\u5bc6\u9a71\u52a8\u7cfb\u7edf\u3002<\/p>","protected":false},"featured_media":5265,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":false,"_uag_custom_page_level_css":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","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":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","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 center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}}},"product_brand":[],"product_cat":[49],"product_tag":[],"class_list":["post-5249","product","type-product","status-publish","has-post-thumbnail","product_cat-coreless-dc-brushless-motor","desktop-align-left","tablet-align-left","mobile-align-left","first","instock","shipping-taxable","product-type-simple"],"acf":[],"uagb_featured_image_src":{"full":["https:\/\/spotlight-motor.com\/wp-content\/uploads\/2026\/08\/sp28zwwc52-28mm-brushless-coreless-dc-motor.png",1600,1600,false],"thumbnail":["https:\/\/spotlight-motor.com\/wp-content\/uploads\/2026\/08\/sp28zwwc52-28mm-brushless-coreless-dc-motor-150x150.png",150,150,true],"medium":["https:\/\/spotlight-motor.com\/wp-content\/uploads\/2026\/08\/sp28zwwc52-28mm-brushless-coreless-dc-motor-300x300.png",300,300,true],"medium_large":["https:\/\/spotlight-motor.com\/wp-content\/uploads\/2026\/08\/sp28zwwc52-28mm-brushless-coreless-dc-motor-768x768.png",768,768,true],"large":["https:\/\/spotlight-motor.com\/wp-content\/uploads\/2026\/08\/sp28zwwc52-28mm-brushless-coreless-dc-motor-1024x1024.png",1024,1024,true],"1536x1536":["https:\/\/spotlight-motor.com\/wp-content\/uploads\/2026\/08\/sp28zwwc52-28mm-brushless-coreless-dc-motor-1536x1536.png",1536,1536,true],"2048x2048":["https:\/\/spotlight-motor.com\/wp-content\/uploads\/2026\/08\/sp28zwwc52-28mm-brushless-coreless-dc-motor.png",1600,1600,false],"trp-custom-language-flag":["https:\/\/spotlight-motor.com\/wp-content\/uploads\/2026\/08\/sp28zwwc52-28mm-brushless-coreless-dc-motor.png",12,12,false],"woocommerce_thumbnail":["https:\/\/spotlight-motor.com\/wp-content\/uploads\/2026\/08\/sp28zwwc52-28mm-brushless-coreless-dc-motor-300x300.png",300,300,true],"woocommerce_single":["https:\/\/spotlight-motor.com\/wp-content\/uploads\/2026\/08\/sp28zwwc52-28mm-brushless-coreless-dc-motor-600x600.png",600,600,true],"woocommerce_gallery_thumbnail":["https:\/\/spotlight-motor.com\/wp-content\/uploads\/2026\/08\/sp28zwwc52-28mm-brushless-coreless-dc-motor-100x100.png",100,100,true]},"uagb_author_info":{"display_name":"meishuyangol@gmail.com","author_link":"https:\/\/spotlight-motor.com\/zh\/author\/"},"uagb_comment_info":0,"uagb_excerpt":"The SP28ZWWC52 is a 28 mm brushless coreless DC motor with 12 to 48 V winding options, 32 to 50 mN\u00b7m rated torque and rated speeds up to 8,430 rpm for compact precision drive systems.","_links":{"self":[{"href":"https:\/\/spotlight-motor.com\/zh\/wp-json\/wp\/v2\/product\/5249","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/spotlight-motor.com\/zh\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/spotlight-motor.com\/zh\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/spotlight-motor.com\/zh\/wp-json\/wp\/v2\/comments?post=5249"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/spotlight-motor.com\/zh\/wp-json\/wp\/v2\/media\/5265"}],"wp:attachment":[{"href":"https:\/\/spotlight-motor.com\/zh\/wp-json\/wp\/v2\/media?parent=5249"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/spotlight-motor.com\/zh\/wp-json\/wp\/v2\/product_brand?post=5249"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/spotlight-motor.com\/zh\/wp-json\/wp\/v2\/product_cat?post=5249"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/spotlight-motor.com\/zh\/wp-json\/wp\/v2\/product_tag?post=5249"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}