{"product_id":"phidgets-nema-23-bipolar-stepper-motor-18deg-28a-771","title":"Phidgets NEMA-23 Bipolar Stepper Motor 1.8deg, 2.8A, 77:1","description":"\u003cdiv class=\"product-block-list__item product-block-list__item--description details_product\"\u003e\u003cdiv class=\"card\"\u003e\n\u003cdiv class=\"card__header\"\u003e\r\n\u003ch2 class=\"card__title heading h3\"\u003eDescription\u003c\/h2\u003e\r\n\u003c\/div\u003e\n\u003cdiv class=\"card__section expandable-content desc-view-more\" id=\"main-description\"\u003e\n\u003cdiv class=\"rte text--pull\"\u003e\n\u003cul\u003e\n\t\u003cli\u003ePhidgets NEMA-23 Bipolar Stepper Motor 1.8deg, 2.8A, 77:1\u003c\/li\u003e\n\t\u003cli\u003e240 kg-cm torque rating\u003c\/li\u003e\n\t\u003cli\u003e1.8 degree step angle (0.023 degrees after gearbox)\u003c\/li\u003e\n\t\u003cli\u003e77:1 planetary gearbox\u003c\/li\u003e\n\t\u003cli\u003eRated for 2.8A of current\u003c\/li\u003e\n\t\u003cli\u003eConnects to a Phidgets stepper controller\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eThe \u003cstrong\u003ePhidgets NEMA-23 Bipolar Stepper Motor 1.8deg, 2.8A, 77:1\u003c\/strong\u003e features an integrated 77:1 planetary gearbox, delivering precise motion with a step angle of 1.8° at the motor shaft, which translates to approximately 0.023° at the output of the gearbox. The motor includes an exposed rear shaft, allowing for easy integration of an encoder or shaft coupler. Designed for high-performance applications, it offers a holding torque of 240 kg·cm and can produce up to 960 kg·cm of torque at 2.8 A, though the gearbox is rated for continuous torque of 240 kg·cm. Users should calculate exact step angles by dividing the motor’s 1.8° step angle by the gearbox reduction ratio for accurate motion planning.\u003c\/p\u003e\n\n\u003cp data-end=\"1328\" data-start=\"762\"\u003eThis stepper motor operates at 24 V DC and must be used with a constant current or chopper drive controller, such as a Phidgets stepper controller, to avoid damage and maintain warranty coverage. Its robust NEMA-23 design, combined with the planetary gearbox, provides reliable performance for robotics, CNC, and automation projects. Key features include a 240 kg·cm torque rating, precise motion control with 0.023° step increments after gearing, and compatibility with Phidgets stepper controllers, making it an ideal choice for demanding precision applications.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cbutton class=\"expandable-content__toggle\" aria-expanded=\"false\" aria-controls=\"main-description\"\u003e\u003cspan class=\"expandable-content__toggle-icon\"\u003e\u003c\/span\u003e\u003cspan class=\"expandable-content__toggle-text\" data-view-more=\"View more\" data-view-less=\"View less\"\u003eView more\u003c\/span\u003e\u003c\/button\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/div\u003e\u003cdiv class=\"card details_product\"\u003e\n\u003cbutton class=\"card__collapsible-button\" data-action=\"toggle-collapsible\" aria-expanded=\"false\" aria-controls=\"unique-tab-2\"\u003e\r\n\u003cspan class=\"card__title heading h3\"\u003eWhat's Included\u003c\/span\u003e\r\n\u003cspan\u003e\r\n\u003csvg focusable=\"false\" class=\"icon icon--arrow-bottom\" viewbox=\"0 0 12 8\" role=\"presentation\"\u003e\r\n\u003cpath stroke=\"currentColor\" stroke-width=\"2\" d=\"M10 2L6 6 2 2\" fill=\"none\" stroke-linecap=\"square\"\u003e\u003c\/path\u003e\r\n\u003c\/svg\u003e\r\n\u003c\/span\u003e\r\n\u003c\/button\u003e\r\n\u003cdiv id=\"unique-tab-2\" class=\"card__collapsible\"\u003e\r\n\u003cdiv class=\"card__collapsible-content\"\u003e\r\n\u003cdiv class=\"rte text--pull\"\u003e\r\n\u003cul\u003e\n\t\u003cli\u003e1x Phidgets NEMA-23 Bipolar Stepper Motor 1.8deg, 2.8A, 77:1\u003c\/li\u003e\n\u003c\/ul\u003e\n\r\n\u003c\/div\u003e\r\n\u003c\/div\u003e\r\n\u003c\/div\u003e\n\u003c\/div\u003e\u003cdiv class=\"card details_product\"\u003e\n\u003cbutton class=\"card__collapsible-button\" data-action=\"toggle-collapsible\" aria-expanded=\"false\" aria-controls=\"unique-tab-3\"\u003e\r\n\u003cspan class=\"card__title heading h3\"\u003eDimensions\u003c\/span\u003e\r\n\u003cspan\u003e\r\n\u003csvg focusable=\"false\" class=\"icon icon--arrow-bottom\" viewbox=\"0 0 12 8\" role=\"presentation\"\u003e\r\n\u003cpath stroke=\"currentColor\" stroke-width=\"2\" d=\"M10 2L6 6 2 2\" fill=\"none\" stroke-linecap=\"square\"\u003e\u003c\/path\u003e\r\n\u003c\/svg\u003e\r\n\u003c\/span\u003e\r\n\u003c\/button\u003e\r\n\u003cdiv id=\"unique-tab-3\" class=\"card__collapsible\"\u003e\r\n\u003cdiv class=\"card__collapsible-content\"\u003e\r\n\u003cdiv class=\"rte text--pull\"\u003e\r\n\u003cul\u003e\n\t\u003cli\u003eShaft diameter: 12mm\u003c\/li\u003e\n\t\u003cli\u003eRear shaft diameter: 3.9mm\u003c\/li\u003e\n\t\u003cli\u003eWeight: 1.5kg\u003c\/li\u003e\n\u003c\/ul\u003e\n\r\n\u003c\/div\u003e\r\n\u003c\/div\u003e\r\n\u003c\/div\u003e\n\u003c\/div\u003e\u003cdiv class=\"card details_product\"\u003e\n\u003cbutton class=\"card__collapsible-button\" data-action=\"toggle-collapsible\" aria-expanded=\"false\" aria-controls=\"unique-tab-4\"\u003e\r\n\u003cspan class=\"card__title heading h3\"\u003eLinks\u003c\/span\u003e\r\n\u003cspan\u003e\r\n\u003csvg focusable=\"false\" class=\"icon icon--arrow-bottom\" viewbox=\"0 0 12 8\" role=\"presentation\"\u003e\r\n\u003cpath stroke=\"currentColor\" stroke-width=\"2\" d=\"M10 2L6 6 2 2\" fill=\"none\" stroke-linecap=\"square\"\u003e\u003c\/path\u003e\r\n\u003c\/svg\u003e\r\n\u003c\/span\u003e\r\n\u003c\/button\u003e\r\n\u003cdiv id=\"unique-tab-4\" class=\"card__collapsible\"\u003e\r\n\u003cdiv class=\"card__collapsible-content\"\u003e\r\n\u003cdiv class=\"rte text--pull\"\u003e\r\n\u003cp\u003e\u003cstrong\u003ePDF Files\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n\t\u003cli\u003e\u003ca href=\"https:\/\/cdn.robotshop.com\/media\/p\/phi\/rb-phi-266\/pdf\/datasheet-3334.pdf\" target=\"_blank\"\u003eDatasheet\u003c\/a\u003e\u003c\/li\u003e\n\t\u003cli\u003e\u003ca href=\"https:\/\/cdn.robotshop.com\/media\/p\/phi\/rb-phi-266\/pdf\/mechanical-drawing-3334.pdf\" target=\"_blank\"\u003eMechanical Drawing\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\r\n\u003c\/div\u003e\r\n\u003c\/div\u003e\r\n\u003c\/div\u003e\n\u003c\/div\u003e\u003cdiv class=\"card details_product\"\u003e\n\u003cbutton class=\"card__collapsible-button\" data-action=\"toggle-collapsible\" aria-expanded=\"false\" aria-controls=\"unique-tab-7\"\u003e\r\n\u003cspan class=\"card__title heading h3\"\u003eSpecifications\u003c\/span\u003e\r\n\u003cspan\u003e\r\n\u003csvg focusable=\"false\" class=\"icon icon--arrow-bottom\" viewbox=\"0 0 12 8\" role=\"presentation\"\u003e\r\n\u003cpath stroke=\"currentColor\" stroke-width=\"2\" d=\"M10 2L6 6 2 2\" fill=\"none\" stroke-linecap=\"square\"\u003e\u003c\/path\u003e\r\n\u003c\/svg\u003e\r\n\u003c\/span\u003e\r\n\u003c\/button\u003e\r\n\u003cdiv id=\"unique-tab-7\" class=\"card__collapsible\"\u003e\r\n\u003cdiv class=\"card__collapsible-content\"\u003e\r\n\u003cdiv class=\"rte text--pull\"\u003e\r\n\u003cp\u003e\u003cstrong\u003eMotor Properties\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n\t\u003cli\u003eMotor Type: Bipolar Stepper\u003c\/li\u003e\n\t\u003cli\u003eManufacturer Part Number: 57STH56-2804B \/ 56JXS300K77\u003c\/li\u003e\n\t\u003cli\u003eStep Angle: 1.8°\u003c\/li\u003e\n\t\u003cli\u003eStep Accuracy: ±5%\u003c\/li\u003e\n\t\u003cli\u003eHolding Torque: 240 kg·cm\u003c\/li\u003e\n\t\u003cli\u003eRated Torque: 240 kg·cm\u003c\/li\u003e\n\t\u003cli\u003eMaximum Motor Speed: 10 RPM\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eElectrical Properties\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n\t\u003cli\u003eRecommended Voltage: 24 V DC\u003c\/li\u003e\n\t\u003cli\u003eRated Current: 2.8 A\u003c\/li\u003e\n\t\u003cli\u003eCoil Resistance: 900 mΩ\u003c\/li\u003e\n\t\u003cli\u003ePhase Inductance: 2.5 mH\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003ePhysical Properties\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n\t\u003cli\u003eShaft Diameter: 12 mm\u003c\/li\u003e\n\t\u003cli\u003eKeyway Width: 4 mm\u003c\/li\u003e\n\t\u003cli\u003eRear Shaft Diameter: 3.9 mm\u003c\/li\u003e\n\t\u003cli\u003eMounting Plate Size: NEMA-23\u003c\/li\u003e\n\t\u003cli\u003eWeight: 1.5 kg\u003c\/li\u003e\n\t\u003cli\u003eNumber of Leads: 4\u003c\/li\u003e\n\t\u003cli\u003eWire Length: 300 mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eGearbox Properties\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n\t\u003cli\u003eGearbox Type: Planetary\u003c\/li\u003e\n\t\u003cli\u003eGear Ratio: 76 49⁄64 : 1\u003c\/li\u003e\n\t\u003cli\u003eBacklash Error: 1 1⁄2°\u003c\/li\u003e\n\t\u003cli\u003eMaximum Strength of Gears: 240 kg·cm\u003c\/li\u003e\n\t\u003cli\u003eShaft Maximum Axial Load: 100 N\u003c\/li\u003e\n\t\u003cli\u003eShaft Maximum Radial Load: 250 N\u003c\/li\u003e\n\u003c\/ul\u003e\n\r\n\u003c\/div\u003e\r\n\u003c\/div\u003e\r\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Phidgets","offers":[{"title":"Default Title","offer_id":41692759883958,"sku":"RB-Phi-266","price":86.1,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/8122\/4630\/files\/phidgets-nema-23-bipolar-stepper-motor-18deg-28a-771-01.webp?v=1758810607","url":"https:\/\/uk.robotshop.com\/products\/phidgets-nema-23-bipolar-stepper-motor-18deg-28a-771","provider":"RobotShop UK","version":"1.0","type":"link"}