{"product_id":"kpower-rc20p-servo","title":"Kpower RC20P Robotic Servo Motor 21kg.cm@7.4V Coreless Metal Gear PWM\/TTL\/RS-485 4.8–8.4V","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\u003cp\u003eKpower RC20P is a robotic \u003cstrong\u003eservo motor\u003c\/strong\u003e designed for compact, high-torque joint and linkage actuation. It uses a coreless motor with metal gears, supports multiple control protocols (PWM | TTL | RS-485), and is specified for 4.8 ~ 8.4 V operation. The travel angle range is listed as 180° (customizable).\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eCoreless motor, metal gear train\u003c\/li\u003e\n\u003cli\u003eMulti-protocol control: PWM | TTL | RS-485\u003c\/li\u003e\n\u003cli\u003eAluminum alloy case material; 2BB (dual ball bearing)\u003c\/li\u003e\n\u003cli\u003ePosition sensor: potentiometer\u003c\/li\u003e\n\u003cli\u003eWorking frequency: 50 ~ 333 Hz (also shown as compatible with 50–300 Hz high-frequency signals)\u003c\/li\u003e\n\u003cli\u003eHorn\/servo arm styles shown: Flat, Cross, Round, Star, Single\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eFor customization requests (appearance, torque, protocols, wiring sequences, reliability options such as waterproofing and low-temperature resistance), contact customer service via the store support channel.\u003c\/p\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eRC20P\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStall Torque\u003c\/td\u003e\n\u003ctd\u003e21 kg (also shown as 21 kg.cm @ 7.4 V)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRated Torque\u003c\/td\u003e\n\u003ctd\u003e5.3 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNo-load Speed\u003c\/td\u003e\n\u003ctd\u003e0.2 s (also shown as 0.2 sec\/60 @ 7.4 V)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e65 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimension\u003c\/td\u003e\n\u003ctd\u003e40 × 20 × 37 mm (also shown as 40*20*37 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTravel Angle Range\u003c\/td\u003e\n\u003ctd\u003e180° (Customizable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e4.8 ~ 8.4 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHorn Gear Spline\u003c\/td\u003e\n\u003ctd\u003e25T φ6 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGear Material\u003c\/td\u003e\n\u003ctd\u003eMetal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMotor\u003c\/td\u003e\n\u003ctd\u003eCoreless Motor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtocol\u003c\/td\u003e\n\u003ctd\u003ePWM | TTL | RS-485\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNo-load Current\u003c\/td\u003e\n\u003ctd\u003e7000 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePosition Sensor\u003c\/td\u003e\n\u003ctd\u003ePotentiometer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCase Material\u003c\/td\u003e\n\u003ctd\u003eAluminum Alloy\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBall Bearing\u003c\/td\u003e\n\u003ctd\u003e2BB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWorking Frequency\u003c\/td\u003e\n\u003ctd\u003e50 ~ 333 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-10 ~ 50°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIP Rating\u003c\/td\u003e\n\u003ctd\u003eIP42\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch2\u003eControl \u0026amp; Wiring Notes\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eInput signal pulse width (20 ms per cycle) examples shown: 0.5 ms, 1 ms, 1.5 ms, 2 ms, 2.5 ms\u003c\/li\u003e\n\u003cli\u003eServo output shaft angle examples shown: -90°, -45°, -0°, 45°, 90°\u003c\/li\u003e\n\u003cli\u003e3-pin wiring (shown): Brown = GND, Red = Vcc, Orange = Signal\u003c\/li\u003e\n\u003cli\u003eServo dead band (general note shown): Analog 1~5 us (Our Servo: 4 us); Digital 1~3 us (Our Servo: 2 us)\u003c\/li\u003e\n\u003cli\u003eRotation angle options (general note shown): 120°, 180°, 270°, 360°\u003c\/li\u003e\n\u003cli\u003eSpeed reference (general note shown): Standard Speed 0.10~0.15 s\/60° (~65 RPM); Attainable Speed 0.3 s\/60° (~33 RPM)\u003c\/li\u003e\n\u003cli\u003eOperating voltage reference (general note shown): Standard Voltage 4.8 V~7.4 V; High Voltage \u0026gt; 7.4 V\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eApplications\u003c\/h2\u003e\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\u003eBio robot, education robot, service robot, desktop robot arm\u003c\/li\u003e\n\u003cli\u003eSolar panel cleaning robot\u003c\/li\u003e\n\u003cli\u003eRemote control car\u003c\/li\u003e\n\u003cli\u003eFixed wing drone\u003c\/li\u003e\n\u003cli\u003eIndustrial automation, intelligent logistics, consumer electronics (industry examples shown)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eManuals\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0673\/6848\/5000\/files\/Kpower-RC20P-Drawing.pdf?v=1781075271\" rel=\"noopener\" target=\"_blank\"\u003eKpower-RC20P-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\u003ch2 id=\"details\"\u003eDetails\u003c\/h2\u003e\u003cdiv class=\"details-gallery\"\u003e\n\u003cimg alt=\"Kpower RC20P robotic servo motor with aluminum case and metal output spline, compact high‑torque design\" loading=\"lazy\" src=\"https:\/\/robotdoo.com\/cdn\/shop\/files\/Kpower-RC20P-Servo-Motor.jpg?v=1782200680\"\u003e\u003cp\u003eThe Kpower RC20P robotic servo motor is built for compact joints and linkages, combining a coreless motor with a metal gear train.\u003c\/p\u003e\n\u003cimg alt=\"RC20P robotic servo specifications graphic with metal gear callout, torque, speed, size, and weight details\" loading=\"lazy\" src=\"https:\/\/robotdoo.com\/cdn\/shop\/files\/Kpower-RC20P-Servo-Motor_d458637c-1b4e-4256-9502-63753e1358e4.jpg?v=1782200691\"\u003e\u003cp\u003eKey specs at a glance include 21 kg·cm stall torque (7.4 V), 0.2 s\/60° speed, 40×20×37 mm body, and 65 g weight.\u003c\/p\u003e\n\u003cimg alt=\"Servo selection reference with rotation angles, speed ranges, operating voltage notes, and servo component examples\" loading=\"lazy\" src=\"https:\/\/robotdoo.com\/cdn\/shop\/files\/Kpower-RC20P-Servo-Motor_35a82d0d-fb05-43ef-8dd5-0e97b510da98.jpg?v=1782200701\"\u003e\u003cp\u003eUse these references to compare rotation range, speed, and voltage when selecting a servo for your mechanism.\u003c\/p\u003e\n\u003cimg alt=\"Servo horn options: flat arm, cross horn, round horn, star horn, and single arm styles\" loading=\"lazy\" src=\"https:\/\/robotdoo.com\/cdn\/shop\/files\/Kpower-RC20P-Servo-Motor_9f715887-25bb-4d8c-82e1-eb99d32b8e99.jpg?v=1782200710\"\u003e\u003cp\u003eMultiple horn styles help match common linkages and mounting patterns for robot arms and custom joints.\u003c\/p\u003e\n\u003cimg alt=\"PWM servo pulse width chart mapping 0.5–2.5 ms signals to output angles from -90° to 90°\" loading=\"lazy\" src=\"https:\/\/robotdoo.com\/cdn\/shop\/files\/Kpower-RC20P-Servo-Motor_89cc857f-4a57-4f9d-8ab0-c8febe2b6607.jpg?v=1782200723\"\u003e\u003cp\u003eStandard PWM control uses a 20 ms cycle; changing pulse width sets target position and effective travel range.\u003c\/p\u003e\n\u003cimg alt=\"Custom servo motor services overview: appearance, torque, protocol, wiring, waterproofing, and low‑temperature options\" loading=\"lazy\" src=\"https:\/\/robotdoo.com\/cdn\/shop\/files\/Kpower-RC20P-Servo-Motor_4c5ba6df-ed93-418d-bf26-bb924e953adb.jpg?v=1782200735\"\u003e\u003cp\u003eCustomization can cover appearance, torque tuning, control protocols, and wiring sequences, with reliability options like waterproofing.\u003c\/p\u003e\n\u003cimg alt=\"Torque vs speed chart explaining stall torque and recommending rated torque near one-quarter of stall torque\" loading=\"lazy\" src=\"https:\/\/robotdoo.com\/cdn\/shop\/files\/Kpower-RC20P-Servo-Motor_d2d02e34-2858-4e32-a252-25b4ffdd80b5.jpg?v=1782200745\"\u003e\u003cp\u003eFor continuous use, sizing around one-quarter of stall torque helps reduce heat buildup and improves long-term stability.\u003c\/p\u003e\n\u003cimg alt=\"3‑pin servo wiring pinout: brown GND, red Vcc power, orange signal connection\" loading=\"lazy\" src=\"https:\/\/robotdoo.com\/cdn\/shop\/files\/Kpower-RC20P-Servo-Motor_2ac5df07-44eb-49c7-9366-025a4586af9d.jpg?v=1782200755\"\u003e\u003cp\u003eWiring follows the common 3‑pin layout: brown ground, red power, and orange control signal.\u003c\/p\u003e\n\u003cimg alt=\"Exploded servo motor diagram labeling gears, bearings, potentiometer position sensor, motor, and housing parts\" loading=\"lazy\" src=\"https:\/\/robotdoo.com\/cdn\/shop\/files\/Kpower-RC20P-Servo-Motor_dc732fce-281b-43bc-b7a4-57cf0ea372af.jpg?v=1782200765\"\u003e\u003cp\u003eA metal gear train, ball bearing support, and potentiometer feedback work together for precise positioning under load.\u003c\/p\u003e\n\u003cimg alt=\"Applications collage for robotic drive modules including robot arms, automation, smart home devices, and UAV drones\" loading=\"lazy\" src=\"https:\/\/robotdoo.com\/cdn\/shop\/files\/Kpower-RC20P-Servo-Motor_65ea6913-5330-4fde-953d-bd203c15ab19.jpg?v=1782200776\"\u003e\u003cp\u003eSuitable for robotics and automation projects such as robot arms, AGV platforms, industrial mechanisms, and UAV payloads.\u003c\/p\u003e\n\u003cimg alt=\"Product-oriented ODM service process timeline from requirements to design, sampling, mold making, and mass production\" loading=\"lazy\" src=\"https:\/\/robotdoo.com\/cdn\/shop\/files\/Kpower-RC20P-Servo-Motor_6dfcdc65-842b-4dc4-a7ec-6d59b486a47d.jpg?v=1782200785\"\u003e\u003cp\u003eODM support follows a structured path from requirements and design through sampling and production readiness.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Kpower","offers":[{"title":"RC20P","offer_id":47910155124966,"sku":"Kpower_RC20P_e79bf0-1","price":101.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0954\/0326\/files\/Kpower-RC20P-Robotic-Servo-Motor-21kgcm74V-Coreless-Metal.jpg?v=1782200968","url":"https:\/\/robotdoo.com\/products\/kpower-rc20p-servo","provider":"RobotDoo","version":"1.0","type":"link"}