{"id":5038,"date":"2026-08-05T00:49:03","date_gmt":"2026-08-05T00:49:03","guid":{"rendered":"https:\/\/spotlight-motor.com\/?post_type=product&#038;p=5038"},"modified":"2026-08-31T06:00:34","modified_gmt":"2026-08-31T06:00:34","slug":"sp28bsa-28-mm-ball-screw-linear-actuator","status":"publish","type":"product","link":"https:\/\/spotlight-motor.com\/zh\/product\/sp28bsa-28-mm-ball-screw-linear-actuator\/","title":{"rendered":"SP28BSA 28 mm \u6eda\u73e0\u4e1d\u6746\u76f4\u7ebf\u6267\u884c\u5668"},"content":{"rendered":"<style>body.postid-5038 { overflow-x: hidden; } body.postid-5038 [data-id=\"4e2fba0\"], body.postid-5038 [data-id=\"169d9d5\"], body.postid-5038 [data-id=\"4ab745c\"], body.postid-5038 [data-id=\"a65d5ba\"], body.postid-5038 [data-id=\"77d8c47\"], body.postid-5038 [data-id=\"79389ad\"], body.postid-5038 [data-id=\"8d9b055\"], body.postid-5038 [data-id=\"6b8732b\"], body.postid-5038 [data-id=\"bc89a15\"] { display: none !important; } body.postid-5038 [data-id=\"9b05c0a\"], body.postid-5038 [data-id=\"166d5d9\"], body.postid-5038 [data-id=\"166d5d9\"] > .elementor-widget-container { width: 100% !important; 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} .sl-data-table td:first-child { color: #18222c; font-weight: 600; } .sl-data-table--compact { min-width: 0; } @media (max-width: 767px) { .sl-parameter-layout { grid-template-columns: 1fr; gap: 16px; } .sl-parameter-panel--wide { grid-column: auto; } .sl-parameter-head { align-items: flex-start; flex-direction: column; gap: 12px; padding: 24px 20px 20px; } .sl-parameter-head h3 { font-size: 20px; } .sl-data-table { min-width: 620px; font-size: 14px; } .sl-data-table--compact { min-width: 520px; } .sl-data-table th, .sl-data-table td { padding: 14px 16px; } }<\/p>\n<p>.sl-product-page a{-webkit-tap-highlight-color:transparent}.sl-product-page a:focus:not(:focus-visible){outline:none}.sl-detail-nav{top:calc(var(--wp-admin--admin-bar--height, 0px) + 120px)!important;z-index:120}.sl-product-page section[id]{scroll-margin-top:210px}@media(max-width:1024px){.sl-detail-nav{top:calc(var(--wp-admin--admin-bar--height, 0px) + 86px)!important}.sl-product-page section[id]{scroll-margin-top:176px}}@media(max-width:767px){.sl-detail-nav{top:calc(var(--wp-admin--admin-bar--height, 0px) + 72px)!important}.sl-product-page section[id]{scroll-margin-top:154px}}@media (max-width:768px){body.postid-5038,body.postid-5038 #page,body.postid-5038 #content{max-width:100%;overflow-x:hidden}body.postid-5038 .elementor-element-2744a92 .eael-breadcrumbs{max-width:100%;overflow-x:auto;overflow-y:hidden;-webkit-overflow-scrolling:touch}body.postid-5038 .elementor-element-2744a92 .eael-breadcrumbs__content{display:flex;flex-wrap:nowrap;width:max-content;min-width:100%;white-space:nowrap}body.postid-5038 .sl-table-scroll{display:block;max-width:100%;overflow-x:auto!important;overflow-y:hidden;-webkit-overflow-scrolling:touch}body.postid-5038 .sl-table-scroll table{width:max-content;min-width:100%}}<\/style>\n<div class=\"sl-product-page\">\n<nav class=\"sl-fullbleed sl-detail-nav\" aria-label=\"Product detail navigation\">\n<div class=\"sl-inner sl-detail-nav__inner\"><a href=\"#sl-features\">Overview<\/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 a quote<\/a><\/div>\n<\/nav>\n<section id=\"sl-features\" class=\"sl-fullbleed sl-section sl-features\">\n<div class=\"sl-inner\">\n<p class=\"sl-kicker\">28 mm precision linear motion<\/p>\n<h2 class=\"sl-title\">Compact ball screw positioning with three lead options<\/h2>\n<p class=\"sl-lead\">The SP28BSA 28 mm ball screw linear actuator combines a stepper motor with a C7 external-drive ball screw. Lead options of 1, 2 and 6 mm provide 0.005, 0.01 or 0.03 mm travel per 1.8\u00b0 step for guided precision mechanisms.<\/p>\n<div class=\"sl-feature-grid\">\n<article class=\"sl-feature-card\">\n<div class=\"sl-feature-icon\"><svg viewBox=\"0 0 48 48\" aria-hidden=\"true\"><path d=\"M8 24h32M32 16l8 8-8 8M16 16l-8 8 8 8\"\/><\/svg><\/div>\n<div class=\"sl-feature-value\">0.005\u20130.03 mm<\/div>\n<h3>Travel per step<\/h3>\n<p>Choose the lead to balance positioning increment, linear speed and available thrust.<\/p>\n<\/article>\n<article class=\"sl-feature-card\">\n<div class=\"sl-feature-icon\"><svg viewBox=\"0 0 48 48\" aria-hidden=\"true\"><path d=\"M8 14h32M8 24h32M8 34h32M16 10v8M28 20v8M36 30v8\"\/><\/svg><\/div>\n<div class=\"sl-feature-value\">C7<\/div>\n<h3>Ball screw accuracy grade<\/h3>\n<p>Hardened SCM415H shaft and nut construction with axial clearance of no more than 0.02 mm.<\/p>\n<\/article>\n<article class=\"sl-feature-card\">\n<div class=\"sl-feature-icon\"><svg viewBox=\"0 0 48 48\" aria-hidden=\"true\"><rect x=\"10\" y=\"10\" width=\"28\" height=\"28\" rx=\"3\"\/><path d=\"M4 24h40M24 4v40\"\/><\/svg><\/div>\n<div class=\"sl-feature-value\">External drive<\/div>\n<h3>Flexible mechanical integration<\/h3>\n<p>Specify screw length, end machining, feedback and brake options for the guided application axis.<\/p>\n<\/article>\n<\/div>\n<\/div>\n<\/section>\n<section id=\"sl-technical\" class=\"sl-fullbleed sl-section sl-tech\">\n<div class=\"sl-inner\">\n<p class=\"sl-kicker\">Technical data<\/p>\n<h2 class=\"sl-title\">28 mm ball screw linear actuator specifications<\/h2>\n<div class=\"sl-spec-grid\">\n<div class=\"sl-spec\"><strong>28 mm<\/strong><span>Frame size<\/span><\/div>\n<div class=\"sl-spec\"><strong>Up to 140 N<\/strong><span>Recommended load limit<\/span><\/div>\n<div class=\"sl-spec\"><strong>1 \/ 2 \/ 6 mm<\/strong><span>Ball screw lead<\/span><\/div>\n<div class=\"sl-spec\"><strong>\u22640.02 mm<\/strong><span>Axial clearance<\/span><\/div>\n<\/div>\n<div class=\"sl-parameter-layout\">\n<div class=\"sl-parameter-panel sl-parameter-panel--wide\">\n<div class=\"sl-parameter-head\">\n<div>\n<p class=\"sl-kicker\">Electrical platform<\/p>\n<h3>Motor electrical specifications<\/h3>\n<\/div>\n<\/div>\n<div class=\"sl-table-scroll\" role=\"region\" aria-label=\"Scrollable motor electrical specifications\" tabindex=\"0\">\n<table class=\"sl-data-table\">\n<thead>\n<tr>\n<th>Winding<\/th>\n<th>Voltage<\/th>\n<th>Current<\/th>\n<th>Resistance<\/th>\n<th>Inductance<\/th>\n<th>Lead wires<\/th>\n<th>Motor length<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Winding option A<\/td>\n<td>2.1 V<\/td>\n<td>1 A<\/td>\n<td>2.1 \u03a9<\/td>\n<td>1.5 mH<\/td>\n<td>4<\/td>\n<td>33.35 mm<\/td>\n<\/tr>\n<tr>\n<td>Winding option B<\/td>\n<td>3.9 V<\/td>\n<td>0.95 A<\/td>\n<td>4.1 \u03a9<\/td>\n<td>4 mH<\/td>\n<td>4<\/td>\n<td>45 mm<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<div class=\"sl-parameter-panel sl-parameter-panel--wide\">\n<div class=\"sl-parameter-head\">\n<div>\n<p class=\"sl-kicker\">Ball screw platform<\/p>\n<h3>Ball screw specifications<\/h3>\n<\/div>\n<\/div>\n<div class=\"sl-table-scroll\" role=\"region\" aria-label=\"Scrollable ball screw specifications\" tabindex=\"0\">\n<table class=\"sl-data-table sl-data-table--wide\">\n<thead>\n<tr>\n<th>Selection<\/th>\n<th>Ball diameter<\/th>\n<th>Thread starts<\/th>\n<th>Thread direction<\/th>\n<th>Screw shaft diameter<\/th>\n<th>Circulation<\/th>\n<th>Material<\/th>\n<th>Surface hardness<\/th>\n<th>Rust protection<\/th>\n<th>Accuracy grade<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Lead option A<\/td>\n<td>\u00d80.8 mm<\/td>\n<td>1<\/td>\n<td>Right-hand<\/td>\n<td>\u00d85.3 mm<\/td>\n<td>3.7 \u00d7 1<\/td>\n<td>SCM415H<\/td>\n<td>HRC58\u201362<\/td>\n<td>Anti-rust oil<\/td>\n<td>C7<\/td>\n<\/tr>\n<tr>\n<td>Lead option B<\/td>\n<td>\u00d80.8 mm<\/td>\n<td>1<\/td>\n<td>Right-hand<\/td>\n<td>\u00d85.1 mm<\/td>\n<td>2.7 \u00d7 1<\/td>\n<td>SCM415H<\/td>\n<td>HRC58\u201362<\/td>\n<td>Anti-rust oil<\/td>\n<td>C7<\/td>\n<\/tr>\n<tr>\n<td>Lead option C<\/td>\n<td>\u00d80.8 mm<\/td>\n<td>2<\/td>\n<td>Right-hand<\/td>\n<td>\u00d85.2 mm<\/td>\n<td>1.6 \u00d7 2<\/td>\n<td>SCM415H<\/td>\n<td>HRC58\u201362<\/td>\n<td>Anti-rust oil<\/td>\n<td>C7<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<div class=\"sl-parameter-panel sl-parameter-panel--wide\">\n<div class=\"sl-parameter-head\">\n<div>\n<p class=\"sl-kicker\">Lead selection<\/p>\n<h3>Travel, nut dimensions and load ratings<\/h3>\n<\/div>\n<\/div>\n<div class=\"sl-table-scroll\" role=\"region\" aria-label=\"Scrollable lead selection and load ratings\" tabindex=\"0\">\n<table class=\"sl-data-table sl-data-table--wide\">\n<thead>\n<tr>\n<th>Selection<\/th>\n<th>Lead<\/th>\n<th>Travel per 1.8\u00b0 step<\/th>\n<th>A<\/th>\n<th>B<\/th>\n<th>C<\/th>\n<th>D<\/th>\n<th>H<\/th>\n<th>W<\/th>\n<th>X<\/th>\n<th>E<\/th>\n<th>Axial clearance<\/th>\n<th>Rated dynamic load<\/th>\n<th>Rated static load<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Lead option A<\/td>\n<td>1 mm<\/td>\n<td>0.005 mm<\/td>\n<td>24 mm<\/td>\n<td>3.5 mm<\/td>\n<td>15 mm<\/td>\n<td>12 mm<\/td>\n<td>16 mm<\/td>\n<td>18 mm<\/td>\n<td>3.4 mm<\/td>\n<td>\u2014<\/td>\n<td>\u22640.02 mm<\/td>\n<td>680 N<\/td>\n<td>1200 N<\/td>\n<\/tr>\n<tr>\n<td>Lead option B<\/td>\n<td>2 mm<\/td>\n<td>0.01 mm<\/td>\n<td>29 mm<\/td>\n<td>4 mm<\/td>\n<td>17 mm<\/td>\n<td>15 mm<\/td>\n<td>19 mm<\/td>\n<td>22 mm<\/td>\n<td>3.4 mm<\/td>\n<td>\u2014<\/td>\n<td>\u22640.02 mm<\/td>\n<td>880 N<\/td>\n<td>1500 N<\/td>\n<\/tr>\n<tr>\n<td>Lead option C<\/td>\n<td>6 mm<\/td>\n<td>0.03 mm<\/td>\n<td>27 mm<\/td>\n<td>4 mm<\/td>\n<td>17.2 mm<\/td>\n<td>14 mm<\/td>\n<td>16 mm<\/td>\n<td>21 mm<\/td>\n<td>3.4 mm<\/td>\n<td>5 mm<\/td>\n<td>\u22640.02 mm<\/td>\n<td>870 N<\/td>\n<td>1450 N<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<div class=\"sl-parameter-panel sl-parameter-panel--wide\">\n<div class=\"sl-parameter-head\">\n<div>\n<p class=\"sl-kicker\">Mechanical interface<\/p>\n<h3>External-drive dimension callouts<\/h3>\n<\/div>\n<\/div>\n<div class=\"sl-table-scroll\" role=\"region\" aria-label=\"Scrollable external-drive dimensions\" tabindex=\"0\">\n<table class=\"sl-data-table sl-data-table--wide\">\n<thead>\n<tr>\n<th>Screw assembly length<\/th>\n<th>Motor length<\/th>\n<th>Front step<\/th>\n<th>Front pilot<\/th>\n<th>Frame<\/th>\n<th>Pilot square<\/th>\n<th>Mounting holes<\/th>\n<th>Lead wires<\/th>\n<th>Wire strip<\/th>\n<th>Nut mounting angle<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>100 \u00b11 mm<\/td>\n<td>L \u00b10.5 mm<\/td>\n<td>1.5 \u00b10.2 mm<\/td>\n<td>\u00d822 0\/\u22120.05 mm<\/td>\n<td>\u25a128 mm<\/td>\n<td>\u25a123 \u00b10.15 mm<\/td>\n<td>4-M2.5, depth 2.5 min<\/td>\n<td>320 \u00b120 mm \u00b7 4 leads \u00b7 AWG #26<\/td>\n<td>6 mm<\/td>\n<td>30\u00b0 \/ 30\u00b0<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<div class=\"sl-parameter-panel sl-parameter-panel--wide\">\n<div class=\"sl-parameter-head\">\n<div>\n<p class=\"sl-kicker\">Performance reference<\/p>\n<h3>Speed reference points<\/h3>\n<\/div>\n<\/div>\n<div class=\"sl-table-scroll\" role=\"region\" aria-label=\"Scrollable speed reference points\" tabindex=\"0\">\n<table class=\"sl-data-table sl-data-table--wide\">\n<thead>\n<tr>\n<th>Reference row<\/th>\n<th>1<\/th>\n<th>2<\/th>\n<th>3<\/th>\n<th>4<\/th>\n<th>5<\/th>\n<th>6<\/th>\n<th>7<\/th>\n<th>8<\/th>\n<th>9<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<th>Lead option C speed (mm\/s)<\/th>\n<td>3<\/td>\n<td>6<\/td>\n<td>12<\/td>\n<td>15<\/td>\n<td>30<\/td>\n<td>45<\/td>\n<td>60<\/td>\n<td>75<\/td>\n<td>90<\/td>\n<\/tr>\n<tr>\n<th>Lead option B speed (mm\/s)<\/th>\n<td>1<\/td>\n<td>2<\/td>\n<td>4<\/td>\n<td>5<\/td>\n<td>10<\/td>\n<td>15<\/td>\n<td>20<\/td>\n<td>25<\/td>\n<td>30<\/td>\n<\/tr>\n<tr>\n<th>Lead option A speed (mm\/s)<\/th>\n<td>0.5<\/td>\n<td>1<\/td>\n<td>2<\/td>\n<td>2.5<\/td>\n<td>5<\/td>\n<td>7.5<\/td>\n<td>10<\/td>\n<td>12.5<\/td>\n<td>15<\/td>\n<\/tr>\n<tr>\n<th>Motor speed (r\/min)<\/th>\n<td>30<\/td>\n<td>60<\/td>\n<td>120<\/td>\n<td>150<\/td>\n<td>300<\/td>\n<td>450<\/td>\n<td>600<\/td>\n<td>750<\/td>\n<td>900<\/td>\n<\/tr>\n<tr>\n<th>Pulse rate (pps)<\/th>\n<td>100<\/td>\n<td>200<\/td>\n<td>400<\/td>\n<td>500<\/td>\n<td>1000<\/td>\n<td>1500<\/td>\n<td>2000<\/td>\n<td>2500<\/td>\n<td>3000<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p class=\"sl-note\">Test conditions: DS-OLS2-FPD bipolar constant-current chopper drive, 24 VDC and 100% operating current. Keep at least 50% performance reserve.<\/p>\n<\/div>\n<div class=\"sl-parameter-panel sl-parameter-panel--wide\">\n<div class=\"sl-parameter-head\">\n<div>\n<p class=\"sl-kicker\">Feedback options<\/p>\n<h3>EK1 encoder resolution selection<\/h3>\n<\/div>\n<\/div>\n<div class=\"sl-table-scroll\" role=\"region\" aria-label=\"Scrollable EK1 encoder resolution selection\" tabindex=\"0\">\n<table class=\"sl-data-table sl-data-table--wide\">\n<thead>\n<tr>\n<th>Resolution (CPR)<\/th>\n<th>100<\/th>\n<th>108<\/th>\n<th>120<\/th>\n<th>125<\/th>\n<th>128<\/th>\n<th>200<\/th>\n<th>250<\/th>\n<th>256<\/th>\n<th>300<\/th>\n<th>360<\/th>\n<th>400<\/th>\n<th>500<\/th>\n<th>1000<\/th>\n<th>512<\/th>\n<th>720<\/th>\n<th>800<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<th>Single-ended code<\/th>\n<td>0<\/td>\n<td>1<\/td>\n<td>2<\/td>\n<td>3<\/td>\n<td>4<\/td>\n<td>5<\/td>\n<td>6<\/td>\n<td>7<\/td>\n<td>8<\/td>\n<td>9<\/td>\n<td>10<\/td>\n<td>11<\/td>\n<td>12<\/td>\n<td>13<\/td>\n<td>14<\/td>\n<td>15<\/td>\n<\/tr>\n<tr>\n<th>Differential code<\/th>\n<td>A<\/td>\n<td>B<\/td>\n<td>C<\/td>\n<td>D<\/td>\n<td>E<\/td>\n<td>F<\/td>\n<td>G<\/td>\n<td>H<\/td>\n<td>I<\/td>\n<td>J<\/td>\n<td>K<\/td>\n<td>L<\/td>\n<td>M<\/td>\n<td>N<\/td>\n<td>O<\/td>\n<td>P<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<div class=\"sl-parameter-panel sl-parameter-panel--wide\">\n<div class=\"sl-parameter-head\">\n<div>\n<p class=\"sl-kicker\">Compact feedback<\/p>\n<h3>EK7 encoder selection<\/h3>\n<\/div>\n<\/div>\n<div class=\"sl-table-scroll\" role=\"region\" aria-label=\"Scrollable EK7 encoder selection\" tabindex=\"0\">\n<table class=\"sl-data-table\">\n<thead>\n<tr>\n<th>Resolution<\/th>\n<th>Single-ended code<\/th>\n<th>Differential code<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>1000 CPR<\/td>\n<td>3<\/td>\n<td>D<\/td>\n<\/tr>\n<tr>\n<td>2000 CPR<\/td>\n<td>6<\/td>\n<td>G<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<div class=\"sl-parameter-panel sl-parameter-panel--wide\">\n<div class=\"sl-parameter-head\">\n<div>\n<p class=\"sl-kicker\">Holding option<\/p>\n<h3>Power-off brake specifications<\/h3>\n<\/div>\n<\/div>\n<div class=\"sl-table-scroll\" role=\"region\" aria-label=\"Scrollable power-off brake specifications\" tabindex=\"0\">\n<table class=\"sl-data-table sl-data-table--wide\">\n<thead>\n<tr>\n<th>Rated voltage<\/th>\n<th>Resistance<\/th>\n<th>Power<\/th>\n<th>Static torque<\/th>\n<th>Insulation class<\/th>\n<th>Insulation resistance<\/th>\n<th>Dielectric strength<\/th>\n<th>Pull-in time<\/th>\n<th>Release time<\/th>\n<th>Rotational clearance<\/th>\n<th>Emergency braking<\/th>\n<th>Mechanical life<\/th>\n<th>Noise<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>24 VDC \u00b15%<\/td>\n<td>143.7 \u03a9 \u00b110%<\/td>\n<td>5.5 W<\/td>\n<td>&gt;0.3 N\u00b7m<\/td>\n<td>B<\/td>\n<td>&gt;100 M\u03a9 at 500 VDC<\/td>\n<td>1000 VAC for 1 s<\/td>\n<td>50 ms<\/td>\n<td>50 ms<\/td>\n<td>1\u00b0<\/td>\n<td>200 cycles<\/td>\n<td>2,000,000 cycles<\/td>\n<td>&lt;60 dB<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"sl-drawing-group\">\n<p class=\"sl-kicker\">Mechanical drawings<\/p>\n<h3>Dimensions and configurable hardware<\/h3>\n<div class=\"sl-drawing-grid\">\n<figure class=\"sl-drawing-card sl-drawing-card--wide\"><img decoding=\"async\" src=\"https:\/\/spotlight-motor.com\/wp-content\/uploads\/2026\/08\/sp28bsa-external-drive-dimensions-en.png\" alt=\"SP28BSA 28 mm ball screw linear actuator external-drive dimensions\" loading=\"lazy\" title=\"SP28BSA 28 mm Ball Screw Linear Actuator\"><figcaption>External-drive configuration dimensions<\/figcaption><\/figure>\n<figure class=\"sl-drawing-card\"><img decoding=\"async\" src=\"https:\/\/spotlight-motor.com\/wp-content\/uploads\/2026\/08\/sp28bsa-screw-end-options-en.png\" alt=\"SP28BSA ball screw end machining options\" loading=\"lazy\" title=\"SP28BSA 28 mm Ball Screw Linear Actuator\"><figcaption>Screw-end machining options<\/figcaption><\/figure>\n<figure class=\"sl-drawing-card\"><img decoding=\"async\" src=\"https:\/\/spotlight-motor.com\/wp-content\/uploads\/2026\/08\/sp28bsa-encoder-dimensions-en.png\" alt=\"SP28BSA optional EK1 and EK7 encoder dimensions\" loading=\"lazy\" title=\"SP28BSA 28 mm Ball Screw Linear Actuator\"><figcaption>Optional encoder dimensions<\/figcaption><\/figure>\n<figure class=\"sl-drawing-card\"><img decoding=\"async\" src=\"https:\/\/spotlight-motor.com\/wp-content\/uploads\/2026\/08\/sp28bsa-power-off-brake-dimensions-en.png\" alt=\"SP28BSA optional power-off brake dimensions\" loading=\"lazy\" title=\"SP28BSA 28 mm Ball Screw Linear Actuator\"><figcaption>Optional power-off brake dimensions<\/figcaption><\/figure>\n<\/div>\n<\/div>\n<div class=\"sl-drawing-group\">\n<p class=\"sl-kicker\">Performance curves<\/p>\n<h3>Single-stack and double-stack thrust-speed reference<\/h3>\n<div class=\"sl-drawing-grid\">\n<figure class=\"sl-drawing-card\"><img decoding=\"async\" src=\"https:\/\/spotlight-motor.com\/wp-content\/uploads\/2026\/08\/sp28bsa-single-stack-thrust-speed-curves-en.png\" alt=\"SP28BSA single-stack thrust-speed curves\" loading=\"lazy\" title=\"SP28BSA 28 mm Ball Screw Linear Actuator\"><figcaption>Single-stack reference \u00b7 recommended load upper limit 115 N<\/figcaption><\/figure>\n<figure class=\"sl-drawing-card\"><img decoding=\"async\" src=\"https:\/\/spotlight-motor.com\/wp-content\/uploads\/2026\/08\/sp28bsa-double-stack-thrust-speed-curves-en.png\" alt=\"SP28BSA double-stack thrust-speed curves\" loading=\"lazy\" title=\"SP28BSA 28 mm Ball Screw Linear Actuator\"><figcaption>Double-stack reference \u00b7 recommended load upper limit 140 N<\/figcaption><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n<section id=\"sl-integration\" class=\"sl-fullbleed sl-showcase\">\n<div class=\"sl-inner sl-showcase-grid\">\n<div>\n<p class=\"sl-kicker\">External-drive integration<\/p>\n<h2 class=\"sl-title\">Configure a guided precision positioning axis<\/h2>\n<p>The translating screw is supported by the application guide while the motor remains fixed. Select motor length, screw lead, screw length, end machining, encoder and brake according to the target stroke and duty cycle.<\/p>\n<ul class=\"sl-checks\">\n<li>1, 2 and 6 mm ball screw lead options<\/li>\n<li>Application-specific screw length and end machining<\/li>\n<li>Optional EK1 or EK7 encoder feedback<\/li>\n<li>Optional 24 VDC power-off brake<\/li>\n<\/ul>\n<\/div>\n<div class=\"sl-product-visual\"><img decoding=\"async\" src=\"https:\/\/spotlight-motor.com\/wp-content\/uploads\/2026\/08\/sp28bsa-main-hero.webp\" alt=\"SP28BSA 28 mm ball screw linear actuator\" loading=\"lazy\" title=\"SP28BSA 28 mm Ball Screw Linear Actuator\"><\/div>\n<\/div>\n<\/section>\n<section id=\"sl-applications\" class=\"sl-fullbleed sl-section sl-applications\">\n<div class=\"sl-inner\">\n<p class=\"sl-kicker\">Typical applications<\/p>\n<h2 class=\"sl-title\">Precision linear motion for compact OEM equipment<\/h2>\n<p class=\"sl-lead\">SP28BSA supports guided mechanisms that require selectable positioning increments, compact packaging and configurable feedback or holding options.<\/p>\n<div class=\"sl-application-grid\">\n<article class=\"sl-application-card\">\n<h3>Laboratory automation<\/h3>\n<p>Sample handling, dosing, valve positioning and compact instrument axes.<\/p>\n<\/article>\n<article class=\"sl-application-card\">\n<h3>Optical and inspection equipment<\/h3>\n<p>Lens adjustment, sensor positioning and guided inspection modules.<\/p>\n<\/article>\n<article class=\"sl-application-card\">\n<h3>Semiconductor equipment<\/h3>\n<p>Fixture positioning, alignment and compact transfer mechanisms.<\/p>\n<\/article>\n<article class=\"sl-application-card\">\n<h3>Compact robotics<\/h3>\n<p>Gripper adjustment, end-effector positioning and space-constrained linear motion.<\/p>\n<\/article>\n<\/div>\n<\/div>\n<\/section>\n<section class=\"sl-fullbleed sl-section sl-integration\">\n<div class=\"sl-inner sl-integration-grid\">\n<div>\n<p class=\"sl-kicker\">Selection information<\/p>\n<h2 class=\"sl-title\">SP28BSA configuration summary<\/h2>\n<p class=\"sl-lead\">Choose the winding, ball screw lead, motor length and optional accessories from the technical data above. Confirm the final mechanism against load, speed, acceleration, guidance, stroke and duty-cycle requirements.<\/p>\n<\/div>\n<div class=\"sl-data-list\">\n<div class=\"sl-data-row\"><span>Product<\/span><strong>SP28BSA<\/strong><\/div>\n<div class=\"sl-data-row\"><span>Frame size<\/span><strong>28 mm<\/strong><\/div>\n<div class=\"sl-data-row\"><span>Configuration<\/span><strong>External drive<\/strong><\/div>\n<div class=\"sl-data-row\"><span>Travel per step<\/span><strong>0.005 \/ 0.01 \/ 0.03 mm<\/strong><\/div>\n<div class=\"sl-data-row\"><span>Selection inputs<\/span><strong>Stroke, load, speed, duty cycle, guidance, feedback and brake<\/strong><\/div>\n<\/div>\n<\/div>\n<\/section>\n<section id=\"sl-consultation\" class=\"sl-fullbleed sl-cta\">\n<div class=\"sl-inner sl-cta-inner\">\n<div>\n<p class=\"sl-kicker\">Configure SP28BSA<\/p>\n<h2 class=\"sl-title\">Discuss your precision linear-motion requirement<\/h2>\n<p>Send the required stroke, load, target speed, positioning increment, duty cycle, installation orientation and screw-end drawing for engineering selection support.<\/p>\n<\/div>\n<p><a class=\"sl-button\" href=\"https:\/\/spotlight-motor.com\/contact\/\">Request engineering support<\/a><\/p>\n<\/div>\n<\/section>\n<section class=\"sl-fullbleed sl-related\">\n<div class=\"sl-inner sl-related-inner\">\n<div>\n<p class=\"sl-kicker\">Explore the range<\/p>\n<h2>Related linear actuator products<\/h2>\n<\/div>\n<p><a href=\"https:\/\/spotlight-motor.com\/product-category\/precision-micro-motors-actuators\/linear-actuator\/\">View all linear actuators \u2192<\/a><\/p>\n<\/div>\n<\/section>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>SP28BSA 28 mm \u6eda\u73e0\u4e1d\u6746\u76f4\u7ebf\u6267\u884c\u5668\u63d0\u4f9b 1\u30012 \u548c 6 mm \u5bfc\u7a0b\u9009\u9879\uff0c\u7cbe\u5ea6\u7b49\u7ea7\u4e3a C7\uff0c\u5efa\u8bae\u8d1f\u8f7d\u80fd\u529b\u6700\u9ad8 140 N\u3002<\/p>","protected":false},"featured_media":5039,"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 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28 mm ball screw linear actuator provides 1, 2 and 6 mm lead options, C7 accuracy and recommended load capacity up to 140 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