{"product_id":"kpower-em3-servo","title":"Kpower EM3 Servo Motor 9g TTL Bus Robot Servo, 3 kg.cm @8.4V, 0.08 s\/60°, 4.8-8.4 V, IP42","description":"\u003cdiv\u003e\n\u003cvideo autoplay=\"autoplay\" controls=\"controls\" loop=\"loop\" muted=\"\" playsinline=\"\" src=\"https:\/\/cdn.shopify.com\/videos\/c\/o\/v\/6fb0741733d4444d99b95856c918a36d.mp4\" style=\"width: 100%; height: auto; display: block;\"\u003e\n    Your browser does not support the video tag.\n  \u003c\/video\u003e\u003cvideo autoplay=\"autoplay\" controls=\"controls\" loop=\"loop\" muted=\"\" playsinline=\"\" src=\"https:\/\/cdn.shopify.com\/videos\/c\/o\/v\/9dbcd8f8c96a4505bd108782be4fb9f8.mp4\" style=\"width: 100%; height: auto; display: block;\"\u003e\n    Your browser does not support the video tag.\n  \u003c\/video\u003e\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eThe Kpower EM3 servo motor is an anti-shock, TTL force-controlled robot servo designed for compact robot joints and multi-servo assemblies. It supports TTL serial bus connectivity to simplify wiring and enable precise torque adjustment with real-time feedback.\u003c\/p\u003e\n\u003cp\u003eFor customization options such as travel angle, wire length, control type, and position sensor, contact the store customer service team.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eAnti-shock design and servo gear clutch anti-impact protection for stable robot joint operation\u003c\/li\u003e\n\u003cli\u003eTTL bus connectivity: multiple servos on a single interface; simplifies wiring and reduces clutter\u003c\/li\u003e\n\u003cli\u003eEnables independent control for each servo (TTL serial bus)\u003c\/li\u003e\n\u003cli\u003eOverload clutch disengagement protection\u003c\/li\u003e\n\u003cli\u003eLow noise design: ≤65 dB\u003c\/li\u003e\n\u003cli\u003eSupports multiple feedbacks\u003c\/li\u003e\n\u003cli\u003eListed as: dual-axes robotic servo\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cdiv style=\"overflow-x:auto;\"\u003e\u003ctable style=\"width:100%; border-collapse:collapse;\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #e5e5e5;\"\u003eModel\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #e5e5e5;\"\u003eEM3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #e5e5e5;\"\u003eStall torque\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #e5e5e5;\"\u003e3 kg.cm @ 8.4V (also listed as 3 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #e5e5e5;\"\u003eRated torque\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #e5e5e5;\"\u003e0.8 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #e5e5e5;\"\u003eNo-load speed\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #e5e5e5;\"\u003e0.08 s\/60° @ 8.4V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #e5e5e5;\"\u003eWeight\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #e5e5e5;\"\u003e9 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #e5e5e5;\"\u003eDimensions\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #e5e5e5;\"\u003e28.5 x 12 x 22.5 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #e5e5e5;\"\u003eWire length\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #e5e5e5;\"\u003e60 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #e5e5e5;\"\u003eTravel angle\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #e5e5e5;\"\u003e300° (Customizable) (another listing states 120°±5 (Customizable))\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #e5e5e5;\"\u003eOperating voltage\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #e5e5e5;\"\u003e4.8 ~ 8.4 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #e5e5e5;\"\u003eProtocol \/ interface\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #e5e5e5;\"\u003ePWM | TTL | RS-485 (another listing states PWM | TTL)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #e5e5e5;\"\u003ePosition sensor\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #e5e5e5;\"\u003ePotentiometer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #e5e5e5;\"\u003eMotor type\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #e5e5e5;\"\u003eDC Brushed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #e5e5e5;\"\u003eGear material\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #e5e5e5;\"\u003ePOM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #e5e5e5;\"\u003eCase material\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #e5e5e5;\"\u003ePlastics\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #e5e5e5;\"\u003eHorn gear spline\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #e5e5e5;\"\u003eN\/A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #e5e5e5;\"\u003eSpline\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #e5e5e5;\"\u003eN\/A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #e5e5e5;\"\u003eBall bearing\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #e5e5e5;\"\u003e2BB (another listing shows \"\/\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #e5e5e5;\"\u003eWorking frequency\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #e5e5e5;\"\u003e50 ~ 333 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #e5e5e5;\"\u003eOperating temperature\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #e5e5e5;\"\u003e-10 ~ 50°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #e5e5e5;\"\u003eIP rating\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #e5e5e5;\"\u003eIP42\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #e5e5e5;\"\u003eNo-load current\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #e5e5e5;\"\u003e1000 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #e5e5e5;\"\u003eStall current\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #e5e5e5;\"\u003e1000 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\n\u003ch2\u003eApplication Scenarios\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eHumanoid robots\u003c\/li\u003e\n\u003cli\u003eRobotic arms\u003c\/li\u003e\n\u003cli\u003eExoskeletons\u003c\/li\u003e\n\u003cli\u003eQuadruped robots\u003c\/li\u003e\n\u003cli\u003eAGV vehicles\u003c\/li\u003e\n\u003cli\u003eARU robots\u003c\/li\u003e\n\u003cli\u003eCompanion robots\u003c\/li\u003e\n\u003cli\u003eAI desktop robots\u003c\/li\u003e\n\u003cli\u003eWheel-drive robots\u003c\/li\u003e\n\u003cli\u003ePet robot toys\u003c\/li\u003e\n\u003cli\u003eDesktop robots\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eManuals\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0673\/6848\/5000\/files\/Kpower-EM3-Drawing.pdf?v=1780218992\" rel=\"noopener\" target=\"_blank\"\u003eKpower-EM3-Drawing.pdf\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0673\/6848\/5000\/files\/Kpower_Servo_Product_Manual-3.pdf?v=1781066839\" rel=\"noopener\" target=\"_blank\"\u003eKpower_Servo_Product_Manual.pdf\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\u003ch2 id=\"details\"\u003eDetails\u003c\/h2\u003e\u003cdiv class=\"details-gallery\"\u003e\n\u003cimg alt=\"Kpower EM3 servo motor overview highlighting anti-shock design and TTL force control for compact robot joints\" loading=\"lazy\" src=\"https:\/\/robotdoo.com\/cdn\/shop\/files\/Kpower-EM3-Servo-Motor.jpg?v=1782706232\"\u003e\u003cp\u003eBuilt for compact robot joints, the Kpower EM3 combines anti-shock protection with TTL force control for stable motion and real-time feedback.\u003c\/p\u003e\n\u003cimg alt=\"TTL serial bus wiring example with multiple servos on one interface for cleaner multi-joint robot assemblies\" loading=\"lazy\" src=\"https:\/\/robotdoo.com\/cdn\/shop\/files\/Kpower-EM3-Servo-Motor_eca717ff-c4a4-4bac-8eb1-be846f469079.jpg?v=1782706238\"\u003e\u003cp\u003eTTL serial bus connectivity lets multiple servos share a single interface, reducing wiring clutter while keeping each servo independently addressable.\u003c\/p\u003e\n\u003cimg alt=\"Kpower EM3 servo motor specification graphic with torque, speed, voltage range, size, weight, and supported protocols\" loading=\"lazy\" src=\"https:\/\/robotdoo.com\/cdn\/shop\/files\/Kpower-EM3-Servo-Motor_46d26463-6852-44ab-bcc8-9a08eb5d88da.jpg?v=1782706244\"\u003e\u003cp\u003eKey specs at a glance: 3 kg·cm stall torque at 8.4V, 0.08 s\/60° speed, 9 g weight, 4.8–8.4 V operation, and PWM\/TTL\/RS-485 support.\u003c\/p\u003e\n\u003cimg alt=\"300° travel angle robot servo with overload-clutch disengagement protection and low-noise ≤65 dB design callouts\" loading=\"lazy\" src=\"https:\/\/robotdoo.com\/cdn\/shop\/files\/Kpower-EM3-Servo-Motor_9b3ec04f-e540-4e80-8fe9-712e901baf3f.jpg?v=1782706250\"\u003e\u003cimg alt=\"Compact white robot servo next to small desktop robot, emphasizing custom servo options for robotics projects\" loading=\"lazy\" src=\"https:\/\/robotdoo.com\/cdn\/shop\/files\/Kpower-EM3-Servo-Motor_039e1536-9bf6-4e03-975d-283c29fcb679.jpg?v=1782706256\"\u003e\u003cimg alt=\"Exploded internal view of the 9 g servo showing gears, motor, PCB, and case for long-life quiet operation\" loading=\"lazy\" src=\"https:\/\/robotdoo.com\/cdn\/shop\/files\/Kpower-EM3-Servo-Motor_88d5bc9b-5208-4cf7-a2a2-d86f5ca487d9.jpg?v=1782706262\"\u003e\u003cp\u003eA lightweight internal build pairs a geartrain with a brushed DC motor and control board to support long-life, quiet servo operation.\u003c\/p\u003e\n\u003cimg alt=\"Kpower EM3 robotic servo feature collage showing dual-axis robotic servo, TTL serial bus communication, and overload clutch\" loading=\"lazy\" src=\"https:\/\/robotdoo.com\/cdn\/shop\/files\/Kpower-EM3-Servo-Motor_f46e8aa6-b57c-4028-9f66-b6c64dc41506.jpg?v=1782706269\"\u003e\u003cimg alt=\"Comparison table of EM3 vs EM10 showing torque, speed, weight, and dimensions; EM3 supports TTL communication and 300°\" loading=\"lazy\" src=\"https:\/\/robotdoo.com\/cdn\/shop\/files\/Kpower-EM3-Servo-Motor_51a51979-9265-4f01-a956-51dce34bd7c2.jpg?v=1782706275\"\u003e\u003cp\u003eChoosing between sizes is straightforward: EM3 focuses on compact 9 g builds, while EM10 targets higher-torque applications.\u003c\/p\u003e\n\u003cimg alt=\"Application examples for EM3 servo motor including companion robots, AI desktop robots, wheel-drive robots, and pet robot toys\" loading=\"lazy\" src=\"https:\/\/robotdoo.com\/cdn\/shop\/files\/Kpower-EM3-Servo-Motor_eeee8145-982c-4d20-9a61-75e59397cea3.jpg?v=1782706281\"\u003e\u003cp\u003eTypical uses include companion robots, desktop AI robots, wheel-drive robots, and pet robot toys where compact joints matter.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Kpower","offers":[{"title":"EM3","offer_id":47931638776038,"sku":"Kpower_EM3_Se_f634df-1","price":35.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0954\/0326\/files\/Kpower-EM3-Servo-Motor-9g-TTL-Bus-Robot-Servo-3-kgcm.jpg?v=1782706502","url":"https:\/\/robotdoo.com\/products\/kpower-em3-servo","provider":"RobotDoo","version":"1.0","type":"link"}